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Q1. Users cannot access a website by its name, but they can access it using an IP address. How would you troubleshoot it?
Answer:
First, I will check whether the issue is related to DNS name resolution. I will verify the client's DNS server address and test whether the DNS server can resolve the website name. I will also check the DNS service and relevant DNS records. After resolving the issue, I will confirm that the website opens using its name.
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Q2. A client computer cannot resolve internal server names. What would you do?
Answer:
First, I will check whether the client is using the correct internal DNS server. I will test name resolution for the affected server and compare the result with a working computer. I will verify the DNS zone and the required host records on the DNS server. Finally, I will confirm that the client can resolve internal names correctly.
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Q3. The DNS server service is stopped. How would you troubleshoot it?
Answer:
First, I will confirm that the DNS server service is stopped and check whether any recent changes caused the issue. I will review the Windows Event Logs for service startup errors. I will also verify the server's configuration and required dependencies. After identifying the cause, I will start the service and test DNS resolution.
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Q4. A DNS record points to the wrong IP address. What would you do?
Answer:
First, I will confirm the correct IP address of the affected server or device. I will locate the incorrect record in DNS Manager and check whether it is a static or dynamically registered record. I will correct the record after verifying the change with the responsible team. Finally, I will clear any relevant cached results and test name resolution again.
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Q5. Users receive a “DNS server not responding” error. How would you investigate it?
Answer:
First, I will check whether the problem affects one user or multiple users. I will verify network connectivity to the DNS server and confirm that the DNS service is running. I will check firewall rules and DNS server settings if requests are not reaching the server. After troubleshooting, I will test name resolution from an affected client.
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Q6. A newly created DNS record is not resolving on a client. What would you do?
Answer:
First, I will verify that the DNS record was created in the correct zone and contains the correct information. I will query the DNS server directly to determine whether the record is available on the server. If the record exists but the client receives an old result, I will check its DNS cache. I will also investigate replication if multiple DNS servers are involved.
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Q7. Users can access a server by its FQDN but not by its short hostname. How would you troubleshoot it?
Answer:
First, I will compare the results of resolving the short hostname and the fully qualified domain name. I will check whether the client has the correct DNS suffix configured. I will also verify the DNS records and suffix search list. After correcting the configuration, I will test both names again.
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Q8. DNS queries are taking too long to respond. What would you check?
Answer:
First, I will determine whether slow DNS responses affect one client or the entire network. I will check network latency, DNS server resource usage, and the response time of DNS queries. I will also review forwarders and upstream DNS availability if external names are affected. Based on the results, I will identify whether the delay is caused by the network, DNS server, or upstream resolver.
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Q9. External websites are not resolving, but internal names work. How would you troubleshoot it?
Answer:
First, I will confirm that internal DNS resolution is working correctly. I will then check whether the DNS server can resolve external names using its forwarders or root hints. I will verify external connectivity and firewall rules that may block DNS queries. After correcting the issue, I will test several external domain names.
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Q10. A DNS forwarder is not responding. What would you do?
Answer:
First, I will confirm which forwarder is configured and whether it is reachable from the DNS server. I will check network connectivity, routing, and firewall rules that may block DNS traffic. I will also verify whether the forwarder itself is available. If necessary, I will use an approved alternative forwarder and test external name resolution.
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Q11. A DNS client receives an incorrect cached IP address. How would you fix it?
Answer:
First, I will verify whether the DNS record on the server contains the correct IP address. I will then check whether the client is using an outdated cached DNS response. If the server record is correct, I will clear the client DNS cache and repeat the query. Finally, I will confirm that the hostname resolves to the correct IP address.
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Q12. A DNS A record is missing from a forward lookup zone. What would you do?
Answer:
First, I will confirm the hostname and IP address that should be registered. I will check whether the record was deleted, never created, or failed to register dynamically. I will create the record manually or correct the dynamic registration process, depending on the environment. Finally, I will verify that clients can resolve the hostname.
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Q13. A PTR record is missing from the reverse lookup zone. How would you troubleshoot it?
Answer:
First, I will verify whether a reverse lookup zone exists for the relevant IP subnet. I will check whether the required PTR record is missing or contains an incorrect hostname. If authorized, I will create the record and verify the reverse lookup result. I will also check dynamic registration settings if PTR records should be created automatically.
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Q14. A DNS zone is not loading properly. What would you do?
Answer:
First, I will check the zone status and review DNS Server events for loading errors. I will verify the zone configuration, storage location, and permissions where applicable. If the zone is Active Directory-integrated, I will also check Active Directory health and replication. I will correct the identified issue and confirm that the zone loads successfully.
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Q15. DNS records are not replicating between domain controllers. How would you investigate?
Answer:
First, I will confirm whether the affected DNS zone is Active Directory-integrated. I will check Active Directory replication health and review the relevant event logs. I will also verify connectivity between domain controllers and investigate any replication errors. After resolving the underlying issue, I will confirm that the DNS records are consistent across the required servers.
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Q16. A client cannot locate a domain controller during domain login. What would you do?
Answer:
First, I will check whether the client is connected to the corporate network and using the correct internal DNS servers. I will verify the domain controller's availability and the required Active Directory DNS records. I will also check whether the client can locate a domain controller through DNS. After resolving the issue, I will test domain connectivity and sign-in.
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Q17. Active Directory SRV records are missing from DNS. How would you fix this?
Answer:
First, I will check whether the required SRV records are missing from the domain's DNS zone. I will verify the Netlogon service and DNS configuration on the domain controller. If the records should be registered automatically, I will investigate why registration failed and trigger registration after correcting the cause. Finally, I will confirm that clients can locate the domain controller.
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Q18. DNS dynamic updates are failing. What would you check?
Answer:
First, I will determine whether the affected computer is configured to register its DNS records dynamically. I will check the DNS zone's dynamic update policy and the permissions required to create or update records. I will also review DNS events for registration failures. After correcting the configuration or permissions, I will trigger registration and verify the record.
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Q19. A DNS zone contains duplicate A records for the same hostname. What would you do?
Answer:
First, I will check whether the multiple IP addresses are intentional or caused by stale dynamic registrations. I will verify the current IP address and ownership of each record before making changes. I will remove only records confirmed to be incorrect or obsolete. Finally, I will test DNS resolution and monitor whether duplicate records return.
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Q20. A DNS server is using the wrong network interface for DNS queries. How would you resolve it?
Answer:
First, I will check the server's network adapters and identify which interface should handle DNS communication. I will verify the IP address and DNS settings assigned to each interface. I will also review the DNS server's listening interfaces and remove incorrect configuration where appropriate. Finally, I will test DNS queries from the required network.
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Q21. DNS resolution works on the server but fails on client computers. What would you check?
Answer:
First, I will compare the DNS configuration of a working client with an affected client. I will check whether the affected client can reach the DNS server and whether firewall rules are blocking DNS traffic. I will also verify that the DNS server is listening on the correct interface and accepting queries from the client network. Finally, I will test resolution from an affected computer.
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Q22. Users receive intermittent DNS resolution failures. How would you investigate?
Answer:
First, I will identify whether the failures affect one client, one subnet, or the entire organization. I will check DNS server availability, network packet loss, and the health of configured forwarders. I will also review DNS event logs for timeouts or service errors. After identifying the cause, I will test name resolution repeatedly to confirm that the issue is resolved.
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Q23. A DNS server has high CPU or memory usage. What would you do?
Answer:
First, I will check whether the high resource usage is temporary or continuous. I will use Task Manager or Resource Monitor to identify the process consuming resources. I will review DNS query activity, server logs, and other running services to identify the cause. I will then take approved corrective action and monitor server performance.
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Q24. A conditional forwarder is not resolving names from another domain. How would you troubleshoot it?
Answer:
First, I will verify the target domain name and the IP addresses of the DNS servers configured in the conditional forwarder. I will check whether those servers are reachable and able to resolve names in the target domain. I will also review firewall rules and the conditional forwarder's configuration. Finally, I will test resolution for a known hostname in that domain.
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Q25. A DNS server cannot resolve names in another internal domain. What would you do?
Answer:
First, I will identify the DNS namespace and determine whether the domains have a trusted or approved DNS resolution path. I will check conditional forwarders, delegation, or other configured resolution methods. I will verify connectivity to the authoritative DNS servers for the other domain. After correcting the configuration, I will test resolution using a known hostname.
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Q26. Users cannot access a server after its IP address changes. How would you troubleshoot it?
Answer:
First, I will confirm that the server's new IP address is correct and reachable. I will check whether the DNS A record still contains the old address. I will update the record or investigate dynamic registration, depending on the configuration. Finally, I will clear stale client cache entries and verify that users can access the server.
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Q27. DNS scavenging is removing records unexpectedly. What would you do?
Answer:
First, I will check the DNS scavenging configuration and determine when the records were last refreshed. I will verify the zone's no-refresh and refresh intervals and the server's scavenging schedule. I will also confirm that active devices are registering their records correctly. I will adjust the configuration only after understanding the impact and verifying the affected records.
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Q28. A DNS server returns “Non-existent domain” for a valid hostname. How would you investigate?
Answer:
First, I will verify the hostname and domain suffix supplied by the user. I will query the DNS server directly to check whether the expected record exists in the correct zone. I will also check for spelling errors, missing records, and incorrect delegation. After correcting the issue, I will repeat the query to confirm that the name resolves.
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Q29. DNS resolution fails after a server restart. What would you check?
Answer:
First, I will check whether the DNS Server service started successfully after the restart. I will verify the server's network configuration and confirm that the DNS zones loaded correctly. I will review Event Viewer for startup or zone-loading errors. Once the issue is corrected, I will test both internal and external name resolution as applicable.
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Q30. A DNS server is not responding to queries from a particular subnet. How would you troubleshoot it?
Answer:
First, I will confirm that the DNS server is working for other subnets. I will check routing, firewall rules, and connectivity between the affected subnet and the DNS server. I will also verify that the server is listening on the correct interface and that its query settings permit the required clients. Finally, I will test DNS resolution from the affected subnet.
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Q31. A DNS server is returning a stale record for a decommissioned server. What would you do?
Answer:
First, I will confirm that the server has been decommissioned and that its old IP address is no longer required. I will check the relevant DNS records and identify any stale entries. I will remove the obsolete records after confirming they are no longer in use. Finally, I will verify that clients no longer resolve the old server address.
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Q32. Users cannot access a shared folder using its server name, but access works using its IP address. How would you troubleshoot it?
Answer:
First, I will check whether the problem is caused by DNS name resolution or by the file-sharing service. I will verify the server's DNS record and test whether the hostname resolves to the correct IP address. I will also check connectivity and SMB access after confirming the DNS result. Finally, I will test access using the server name again.
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Q33. A DNS server cannot resolve external names after a firewall change. What would you do?
Answer:
First, I will confirm that the issue started after the firewall change. I will check whether the firewall is blocking DNS traffic between the server and its configured forwarders or other external resolvers. I will review the approved firewall rules and verify connectivity to the required DNS destinations. After correcting the rule, I will test external name resolution.
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Q34. The DNS server is configured with an incorrect IP address. How would you fix it?
Answer:
First, I will verify the correct static IP address, subnet mask, gateway, and DNS settings from the approved network configuration. I will check the impact before changing the server's network settings. I will then correct the configuration and verify that the DNS service is using the intended interface. Finally, I will test connectivity and name resolution.
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Q35. A DNS zone transfer is failing between primary and secondary DNS servers. How would you investigate?
Answer:
First, I will verify that the primary zone permits transfers to the intended secondary DNS server. I will check network connectivity and firewall rules between the servers. I will also review the zone's transfer settings and relevant DNS event logs. After correcting the configuration, I will verify that the secondary server receives the latest zone data.
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Q36. A secondary DNS zone contains outdated records. What would you do?
Answer:
First, I will compare the secondary zone's records with the primary zone. I will check whether zone transfers are enabled and whether the secondary server can communicate with the primary server. I will review transfer errors and the zone's serial information where relevant. After fixing the transfer problem, I will verify that the secondary zone contains the latest records.
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Q37. Users can resolve internal DNS names but cannot access internal applications. What would you check?
Answer:
First, I will confirm that the application hostname resolves to the correct IP address. I will then check whether the application server is reachable and whether the required service is running. I will verify the relevant ports, firewall rules, and application status. Finally, I will test the application from an affected client to determine whether the issue is DNS-related or application-related.
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Q38. A client is using a public DNS server instead of the internal DNS server. How would you resolve it?
Answer:
First, I will check the client's network adapter configuration and identify why it is using a public DNS server. I will verify the approved DNS settings provided through DHCP or configured manually. I will correct the client or DHCP configuration as appropriate. Finally, I will confirm that internal names resolve correctly through the internal DNS server.
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Q39. DNS resolution fails for only one user, while other users are unaffected. What would you do?
Answer:
First, I will compare the affected user's DNS and network configuration with that of a working user. I will check the DNS cache, network adapter settings, and any VPN configuration. I will also test the hostname against the intended DNS server to isolate the issue. After correcting the client-specific problem, I will verify that name resolution works normally.
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Q40. DNS queries are failing after a domain controller's IP address changes. How would you troubleshoot it?
Answer:
First, I will verify the domain controller's new IP address and confirm that its network configuration is correct. I will check the DNS A and SRV records to identify any references to the old address. I will also verify dynamic registration and Active Directory health. Finally, I will confirm that clients can locate the domain controller using DNS.
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Q41. A DNS server is returning a “Server failure” response. What would you check?
Answer:
First, I will identify which DNS server is returning the failure and determine whether the problem affects internal or external names. I will check the DNS service, zone health, and relevant event logs. If the query depends on a forwarder, I will verify that the forwarder is reachable and responding. I will then test the query again after correcting the underlying issue.
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Q42. A DNS server is not listening on port 53. What would you do?
Answer:
First, I will check whether the DNS Server service is running and whether it is configured to listen on the correct IP addresses. I will verify that another process is not interfering with the required port. I will also check firewall settings and relevant event logs. After resolving the cause, I will test DNS queries from a client.
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Q43. Users report that some websites work while others do not. How would you troubleshoot it?
Answer:
First, I will identify which websites fail and check whether their names resolve correctly. I will compare DNS responses from the internal resolver with responses from an approved alternative resolver where permitted. I will also check for incorrect cached records, filtering policies, or upstream DNS problems. Finally, I will test the affected websites again.
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Q44. A DNS record is resolving to an old IP address after a server migration. What would you do?
Answer:
First, I will confirm the new server IP address and determine whether the old server is still active. I will inspect the DNS records and identify any stale A or PTR records. I will update the required records and check whether dynamic registration is overwriting the changes. Finally, I will verify that clients resolve the new server address.
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Q45. A DNS server cannot resolve names because its root hints are incorrect or unavailable. How would you investigate?
Answer:
First, I will confirm whether the DNS server uses root hints or configured forwarders for external name resolution. I will review the root hints configuration and check external network connectivity. I will also verify that firewall rules permit the required DNS traffic. After correcting the configuration or connectivity problem, I will test external name resolution.
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Q46. DNS resolution fails after a Windows update. What would you do?
Answer:
First, I will confirm whether the DNS issue began immediately after the Windows update. I will check the DNS Server service, network adapter configuration, firewall settings, and event logs. I will also determine whether the issue affects the DNS server or only client computers. After identifying the cause, I will apply an approved fix and verify DNS resolution.
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Q47. A DNS server cannot resolve names after its network adapter is replaced. How would you troubleshoot it?
Answer:
First, I will verify that the new network adapter is installed correctly and has the approved IP configuration. I will check whether the DNS server is listening on the correct interface and whether the old adapter's settings remain. I will also verify routing, gateway settings, and firewall rules. Finally, I will test DNS queries from both the server and client computers.
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Q48. DNS logs show repeated failed queries from an unknown source. What would you do?
Answer:
First, I will identify the source IP addresses and determine whether the queries are legitimate or unusual. I will review query patterns, DNS logs, and network security monitoring data. I will coordinate with the security team before blocking traffic or changing access rules. Finally, I will verify that legitimate DNS clients continue to function.
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Q49. A DNS server is running, but it is not resolving records from its own zone. What would you check?
Answer:
First, I will verify that the affected zone is loaded and configured correctly. I will check whether the required records exist and whether the server is authoritative for that zone. I will review DNS event logs for zone-loading or configuration errors. After correcting the issue, I will query the server directly to confirm that it returns the expected records.
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Q50. Multiple users lose access to internal applications because of a DNS outage. How would you handle the incident?
Answer:
First, I will assess the impact and confirm which users, applications, and DNS servers are affected. I will check DNS service availability, network connectivity, and the health of the relevant zones. I will restore DNS service using the approved recovery procedure and keep the affected teams informed. After recovery, I will verify application access and document the root cause.
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Q51. A client receives an IP address beginning with 169.254. How would you troubleshoot it?
Answer:
First, I will check why the computer is unable to obtain an IP address from the DHCP server. An address beginning with 169.254 usually indicates that Windows has assigned itself an APIPA address because DHCP configuration failed. I will check the network connection, DHCP service, and scope configuration. After resolving the issue, I will verify that the client receives a valid IP address.
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Q52. A client cannot obtain an IP address from the DHCP server. What would you do?
Answer:
First, I will check whether the problem affects one client or multiple clients. I will verify the client's network connection and confirm that its adapter is configured to obtain an IP address automatically. I will then check the DHCP service, scope availability, and any relay configuration. Finally, I will renew the client's address and test network connectivity.
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Q53. The DHCP server service is stopped. How would you troubleshoot it?
Answer:
First, I will confirm that the DHCP Server service is stopped and check whether the server has experienced any recent changes. I will review Windows Event Logs for service errors and verify that the server's configuration is correct. I will also check whether the DHCP server is authorized in Active Directory when applicable. After resolving the cause, I will start the service and test a client lease.
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Q54. A DHCP scope has no available IP addresses. What would you do?
Answer:
First, I will check the scope's address range and confirm that all usable addresses are leased or reserved. I will review active leases and identify expired or unnecessary reservations. If more addresses are required, I will discuss an approved scope expansion or subnet change with the network team. Finally, I will verify that new clients can obtain leases.
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Q55. A DHCP client receives an IP address from the wrong subnet. How would you investigate?
Answer:
First, I will confirm the client's physical or wireless network and identify the subnet it should use. I will check the DHCP scope, VLAN assignment, and relay configuration for that network. I will also verify that no unintended DHCP server is responding to client requests. After correcting the configuration, I will renew the client's lease and verify its subnet.
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Q56. A DHCP scope has an incorrect subnet mask. What would you do?
Answer:
First, I will verify the correct subnet mask against the approved IP addressing plan. I will inspect the scope options and confirm whether the incorrect mask is being provided by DHCP. I will correct the configuration after assessing the impact on existing clients. Finally, I will renew a test client's lease and verify its network settings.
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Q57. Clients receive an incorrect default gateway from DHCP. How would you fix it?
Answer:
First, I will confirm the correct gateway address for the client's subnet. I will check DHCP scope option 003 to determine whether an incorrect gateway is being distributed. I will update the option after verifying the correct network configuration. Finally, I will renew a test client's lease and confirm that the client can reach its gateway and required networks.
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Q58. DHCP clients are receiving incorrect DNS server addresses. What would you do?
Answer:
First, I will check the DNS server addresses assigned to an affected client. I will verify DHCP option 006 at the appropriate server, scope, or policy level. I will correct the configuration so that clients receive the approved DNS servers. Finally, I will renew the lease and test internal name resolution.
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Q59. DHCP clients are not receiving the correct DNS suffix. How would you troubleshoot it?
Answer:
First, I will verify the DNS suffix expected for the affected clients. I will check DHCP option 015 and any relevant connection-specific DNS settings or policies. I will correct the suffix configuration at the appropriate level. After renewing the lease, I will confirm that the client receives the expected suffix and can resolve internal names.
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Q60. A DHCP reservation is not assigning the expected IP address. What would you do?
Answer:
First, I will verify that the reservation uses the correct client MAC address and IP address. I will check whether the reserved address belongs to the correct scope and whether another device is already using it. I will also confirm that the client is connected to the expected network. Finally, I will renew the client's lease and verify the assigned address.
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Q61. Two devices appear to be using the same IP address. How would you troubleshoot it?
Answer:
First, I will identify the affected devices and confirm whether an IP address conflict exists. I will check DHCP leases, reservations, and any manually configured static IP addresses. I will identify which device should own the address and correct the conflicting configuration. Finally, I will test network connectivity from both devices.
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Q62. A DHCP server is not responding to clients on another VLAN. What would you check?
Answer:
First, I will confirm that the DHCP server works for clients on its local subnet. I will check whether the remote VLAN has a correctly configured DHCP relay or IP helper address. I will also verify routing and firewall rules between the client network and DHCP server. After correcting the configuration, I will test DHCP address assignment from the remote VLAN.
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Q63. A DHCP scope is inactive. How would you resolve the issue?
Answer:
First, I will verify the scope's status and determine why it is inactive. I will check the scope configuration, address range, and whether the scope is intended to serve that subnet. I will also review the DHCP server's configuration and relevant logs. If the scope is required and correctly configured, I will activate it and test address assignment.
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Q64. A DHCP server is not authorized in Active Directory. What would you do?
Answer:
First, I will confirm that the server is intended to provide DHCP services in the domain. I will check its authorization status in DHCP Manager and verify that the server is joined to the appropriate domain. If authorization is missing, I will arrange for an authorized administrator to authorize it. Finally, I will verify that the DHCP service is operating correctly.
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Q65. DHCP clients cannot renew their leases. How would you investigate?
Answer:
First, I will check whether the client can communicate with the DHCP server. I will review the current lease, scope availability, and DHCP service status. I will also check network connectivity and relay configuration if the client is on another subnet. After correcting the issue, I will renew the lease and verify the client's network settings.
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Q66. A DHCP server is assigning addresses outside the expected range. What would you do?
Answer:
First, I will compare the assigned IP address with the configured scope and approved subnet. I will check whether another DHCP server is responding or whether a superscope, policy, or reservation affects the assignment. I will verify the client's VLAN and relay configuration. After identifying the source, I will correct the configuration and test the lease again.
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Q67. DHCP clients receive an IP address but cannot access the internet. How would you troubleshoot it?
Answer:
First, I will check whether the client has received the correct IP address, subnet mask, default gateway, and DNS servers. I will test connectivity to the gateway to determine whether local network access is working. I will then check DNS resolution and upstream routing if the gateway is reachable. Finally, I will verify internet access after correcting the identified issue.
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Q68. A DHCP lease duration is configured incorrectly. What would you do?
Answer:
First, I will review the current lease duration and understand the requirements of the affected network. I will check whether the duration is appropriate for the number of devices and how frequently they connect or disconnect. I will update the lease duration only after confirming the impact with the network team. Finally, I will monitor address utilization and client lease behavior.
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Q69. DHCP logs show repeated address allocation failures. How would you investigate?
Answer:
First, I will identify the error messages and determine whether the failures relate to address exhaustion, conflicts, or client communication. I will check the scope's available addresses and review leases and reservations. I will also verify DHCP service health and network relay configuration where applicable. After fixing the cause, I will confirm that clients receive leases successfully.
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Q70. A DHCP server fails after a restart. What would you check?
Answer:
First, I will check whether the DHCP Server service started successfully after the restart. I will review event logs for startup errors and verify the server's authorization and configuration. I will also check whether the required scopes and options are available. After resolving the issue, I will test address allocation from a client.
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Q71. A DHCP scope contains many expired leases. What would you do?
Answer:
First, I will review the expired leases and confirm whether the associated devices are still active. I will check the scope's lease duration and address utilization to understand why the leases are accumulating. I will use the approved cleanup process and avoid deleting active assignments without verification. Finally, I will monitor the scope to ensure address availability remains healthy.
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Q72. A DHCP server is experiencing high CPU usage. How would you troubleshoot it?
Answer:
First, I will confirm the level and duration of the CPU usage. I will identify the processes consuming resources and review DHCP logs for unusual activity or repeated errors. I will also check whether the server is receiving an unusually high number of requests. After identifying the cause, I will apply an approved fix and monitor server performance.
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Q73. A client receives an IP address but cannot communicate with other devices on its subnet. What would you check?
Answer:
First, I will verify the client's IP address, subnet mask, and VLAN assignment. I will check whether the IP address conflicts with another device and confirm that the client can communicate with its default gateway where applicable. I will also review switch port configuration and local firewall settings. Finally, I will test communication with another known device on the subnet.
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Q74. A DHCP scope has incorrect DNS settings at the scope level. How would you fix them?
Answer:
First, I will verify the DNS settings required for that subnet. I will review the scope-level options and determine whether they override server-level settings. I will correct the relevant options and test with a client that renews its lease. Finally, I will confirm that the client receives the intended DNS server addresses and suffix.
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Q75. A DHCP server is not distributing Option 066 or 067 for WDS/PXE clients. What would you do?
Answer:
First, I will verify whether the environment requires DHCP options 066 and 067 or uses a different supported PXE configuration. I will check the DHCP scope and policy settings and confirm that the WDS server is configured correctly. I will avoid changing PXE options without checking the boot architecture and network design, because incorrect values can prevent clients from booting. Finally, I will test PXE boot with a compatible client.
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Q76. DHCP clients receive an incorrect lease after moving to another VLAN. What would you do?
Answer:
First, I will confirm that the client has been moved to the correct VLAN and that the new subnet is configured properly. I will check whether the DHCP relay is forwarding requests to the correct server and scope. I will also check whether the client is retaining an old lease. After correcting the configuration, I will renew the lease and verify the new subnet details.
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Q77. A DHCP reservation works for one device but not another. How would you troubleshoot it?
Answer:
First, I will compare the MAC addresses and reservation details of both devices. I will verify that the affected device is connected to the correct network and is requesting an address from the intended DHCP scope. I will also check for static IP configuration or a conflicting reservation. Finally, I will renew the lease and confirm the assigned address.
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Q78. A DHCP server is running out of addresses during business hours. What would you do?
Answer:
First, I will check the scope's address utilization and determine when the available addresses are exhausted. I will identify unused reservations, short-term devices, and stale leases that may be affecting capacity. I will review the subnet size and address allocation requirements with the network team. I will then implement an approved capacity solution and monitor utilization.
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Q79. A DHCP server is not updating DNS records for clients. How would you investigate?
Answer:
First, I will check whether DHCP is configured to perform DNS updates for the affected clients. I will verify the DNS zone's dynamic update settings and the credentials or permissions used for updates. I will also review DHCP and DNS event logs for errors. After correcting the configuration, I will confirm that the expected DNS records are created or updated.
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Q80. A DHCP client receives an IP address but no DNS server address. What would you do?
Answer:
First, I will check the client's IP configuration to confirm that the DNS server address is missing. I will review DHCP option 006 at the server, scope, and policy levels. I will also check whether another policy or configuration is affecting the client. After correcting the setting, I will renew the lease and test DNS resolution.
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Q81. DHCP clients lose connectivity when their leases expire. How would you troubleshoot it?
Answer:
First, I will check the lease duration and determine whether clients can contact the DHCP server during renewal. I will verify DHCP service availability, network connectivity, and scope capacity. I will also review DHCP logs for renewal failures. After fixing the cause, I will test lease renewal and confirm that clients maintain connectivity.
Steps:
Q82. A DHCP server has an incorrect IP address configured. How would you resolve it?
Answer:
First, I will verify the server's approved static IP configuration and the subnet it serves. I will check whether the incorrect address affects DHCP bindings, relay communication, or server reachability. I will coordinate the change to avoid interrupting active clients. Finally, I will verify the DHCP service and test address assignment after correcting the network settings.
Steps:
Q83. DHCP clients on a wireless network are not receiving addresses. What would you check?
Answer:
First, I will determine whether the issue affects all wireless clients or only a specific access point or SSID. I will verify wireless connectivity, VLAN mapping, and DHCP scope availability. I will also check the relay configuration and whether the wireless network is using the correct DHCP server. Finally, I will test address assignment with a client on the affected SSID.
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Q84. A DHCP client has the correct IP address but an incorrect subnet mask. What would you do?
Answer:
First, I will confirm the correct subnet mask for the client's network. I will check whether the mask is being provided by DHCP or configured manually on the device. I will correct the relevant scope option or client setting after verifying the network design. Finally, I will renew the lease and test communication with local and remote devices.
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Q85. DHCP requests are not reaching the server. How would you investigate?
Answer:
First, I will confirm whether the affected clients are on the same subnet as the DHCP server or on a remote subnet. I will check local network connectivity, VLAN configuration, and DHCP relay settings. I will also review firewall rules and DHCP server logs to determine whether requests are arriving. After identifying the communication problem, I will test address assignment again.
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Q86. A DHCP server has an incorrect scope range. What would you do?
Answer:
First, I will compare the current scope range with the approved IP addressing plan. I will identify any addresses that are outside the intended subnet or overlap with reserved infrastructure addresses. I will correct the range only after checking the impact on existing leases and reservations. Finally, I will verify that new clients receive valid addresses.
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Q87. DHCP clients receive addresses, but the default gateway is unreachable. How would you troubleshoot it?
Answer:
First, I will confirm that the client has the correct IP address, subnet mask, and default gateway. I will check whether the gateway is available and whether the client is connected to the correct VLAN. I will also verify the switch port, routing, and gateway interface configuration. Finally, I will test communication after correcting the network issue.
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Q88. A DHCP scope exclusion is incorrectly configured. What would you do?
Answer:
First, I will identify the addresses that must be excluded from automatic allocation, such as addresses reserved for infrastructure devices. I will compare those addresses with the current exclusion range. I will correct the exclusion only after checking existing leases and static assignments. Finally, I will verify that DHCP allocates only the intended addresses.
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Q89. A DHCP server is assigning addresses to unauthorized devices. What would you do?
Answer:
First, I will identify the devices receiving addresses and confirm whether they are authorized to use the network. I will check DHCP leases, switch port information, and network access controls. I will coordinate with the security team before restricting devices or changing access policies. Finally, I will verify that authorized clients continue to receive addresses correctly.
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Q90. A DHCP server's event logs show database errors. How would you troubleshoot them?
Answer:
First, I will review the exact DHCP database error and determine whether the service is still operating. I will check disk space, database file accessibility, and relevant system events. I will follow the approved database backup and recovery procedure rather than deleting database files directly. After recovery, I will verify that leases and scope configuration are available.
Steps:
Q91. A DHCP server is not serving a newly created scope. What would you check?
Answer:
First, I will verify that the new scope has the correct subnet, address range, and options. I will check whether the scope is activated and whether the clients are reaching the correct DHCP server. For remote subnets, I will verify the DHCP relay configuration. Finally, I will test address allocation from a client on the new subnet.
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Q92. DHCP clients receive duplicate addresses after a server migration. What would you do?
Answer:
First, I will confirm whether both the old and new DHCP servers are responding to client requests. I will check the scopes, reservations, exclusions, and lease databases on both servers. I will also verify that the migration followed the approved cutover plan. After identifying the overlap, I will correct the configuration and test clients for duplicate addresses.
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Q93. A DHCP server is not updating leases correctly after a network outage. How would you investigate?
Answer:
First, I will confirm that network connectivity has been restored between the clients and DHCP server. I will check the DHCP service, scope availability, and client lease status. I will review logs for renewal failures or communication errors that occurred during the outage. Finally, I will renew a test lease and verify that the client receives valid settings.
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Q94. A DHCP server is not providing IP addresses to clients after a firewall change. What would you do?
Answer:
First, I will confirm that DHCP stopped working after the firewall change. I will check whether the required DHCP traffic is permitted between clients, relay agents, and the server. I will also verify that local network communication is working and that the DHCP service is running. After correcting the approved firewall rules, I will test address assignment.
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Q95. A client receives a valid lease but loses its IP configuration after restarting. How would you troubleshoot it?
Answer:
First, I will check whether the client is configured to obtain its address automatically or uses a manual configuration. I will verify the lease information and check whether the DHCP server is available during startup. I will also investigate adapter settings, driver issues, and any configuration-management policies that may overwrite the settings. Finally, I will restart the client and confirm that its network configuration remains correct.
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Q96. A DHCP server is providing the wrong boot server information to PXE clients. How would you investigate?
Answer:
First, I will confirm the expected boot server and boot file for the affected client architecture. I will check the relevant DHCP options, policies, and WDS configuration to identify where the incorrect information is coming from. I will also verify whether the deployment design uses DHCP options or another supported PXE method. After correcting the configuration, I will test PXE boot.
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Q97. A DHCP server is not responding to clients after its IP address changes. What would you do?
Answer:
First, I will verify that the DHCP server has the correct new IP address and can communicate with the required networks. I will check whether DHCP relay agents or firewall rules still reference the old address. I will also verify the server's scope configuration and service status. Finally, I will renew a client lease and confirm that address allocation works.
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Q98. DHCP clients cannot obtain addresses from a failover partner. How would you troubleshoot it?
Answer:
First, I will check whether the primary DHCP server is unavailable and whether the failover partner is healthy. I will review the DHCP failover relationship, partner state, and network connectivity between the servers. I will also check the partner's scopes and authorization. After resolving the issue, I will verify that clients can obtain or renew leases through the available server.
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Q99. A DHCP failover relationship is in a communication-interrupted state. What would you do?
Answer:
First, I will confirm that both DHCP servers are running and that the failover communication path is available. I will check routing, firewall rules, and the failover configuration for errors. I will review event logs to understand why the partners lost communication. After restoring connectivity, I will verify the relationship state and confirm that lease handling is operating correctly.
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Q100. Multiple users cannot obtain IP addresses because of a DHCP outage. How would you handle the incident?
Answer:
First, I will assess the number of affected users and identify the impacted subnets. I will check DHCP service availability, scope capacity, and network relay configuration. I will restore service using the approved recovery or failover procedure and keep the relevant teams informed. After recovery, I will verify that clients receive valid leases and document the incident.
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Section 3: WDS Troubleshooting (Q101–Q150)
Q101. A client cannot boot from the network using PXE. What would you do?
Answer:
First, I will check whether the client has network connectivity and whether PXE boot is enabled in its BIOS or UEFI settings. I will verify that the DHCP server assigns an IP address and that the WDS server is available. I will also check the client's network boot configuration and WDS event logs. Finally, I will test PXE boot again.
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Q102. The WDS Server service is stopped. How would you troubleshoot it?
Answer:
First, I will check whether the WDS service is stopped because of a configuration issue or a recent server change. I will review the relevant Windows event logs and verify the service configuration. I will also check whether the required deployment files and server resources are available. After identifying the cause, I will start the service and test a PXE client.
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Q103. A PXE client receives an IP address but cannot find the WDS server. What would you do?
Answer:
First, I will confirm that DHCP is working correctly and that the client has a valid IP address. I will verify that the WDS server is reachable from the client's subnet and that the PXE configuration is correct. I will also check the DHCP relay and network routing where applicable. Finally, I will review WDS logs and test the deployment again.
Steps:
Q104. WDS clients receive a “No boot filename received” error. How would you troubleshoot it?
Answer:
First, I will verify that the client is reaching the correct PXE deployment server. I will check the boot configuration and confirm that an appropriate boot image is available for the client's architecture. I will also review DHCP options or the supported PXE configuration method used in the environment. Finally, I will test the client with the correct boot image.
Steps:
Q105. A WDS client receives a TFTP timeout error. What would you do?
Answer:
First, I will check whether the client can reach the WDS server and whether the TFTP boot files are available. I will verify firewall rules and network connectivity between the client and server. I will also check the WDS service and review event logs for file transfer errors. After correcting the issue, I will retry PXE boot.
Steps:
Q106. A boot image is missing from WDS. How would you resolve it?
Answer:
First, I will confirm which boot image is required for the target device. I will check the Boot Images folder in the WDS console and verify whether the image was removed or never imported. I will locate the approved Windows installation media and import the correct boot image. Finally, I will verify that the image is available during PXE boot.
Steps:
Q107. A WDS client cannot find an installation image. What would you do?
Answer:
First, I will verify that the client has successfully loaded the boot image and reached the WDS deployment menu. I will check whether an appropriate installation image is imported and available to clients. I will also review image access settings and architecture compatibility. After correcting the configuration, I will test the installation process again.
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Q108. A WDS client fails because its boot image architecture is incompatible. How would you troubleshoot it?
Answer:
First, I will identify whether the client is using x64 UEFI, legacy BIOS, or another supported boot configuration. I will check the architecture of the selected boot image and confirm that it supports the deployment environment. I will import or select the correct boot image if required. Finally, I will retry the PXE boot process.
Steps:
Q109. A WDS deployment stops during Windows PE startup. What would you do?
Answer:
First, I will identify the exact stage where Windows PE startup fails. I will verify that the boot image is compatible with the client and that the network adapter and storage drivers are available. I will also check WDS logs and the error message displayed on the client. After correcting the driver or image issue, I will repeat the deployment test.
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Q110. A WDS deployment fails because of a missing network driver. How would you resolve it?
Answer:
First, I will identify the client's network adapter and confirm that Windows PE does not have a compatible driver. I will obtain the approved driver from the hardware manufacturer and verify its compatibility with the boot image. I will add the driver using the supported image servicing procedure. Finally, I will test network connectivity during deployment.
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Q111. A WDS deployment fails because of a missing storage driver. What would you do?
Answer:
First, I will determine whether Windows PE can detect the target computer's storage controller and disk. I will check the hardware model and identify the required storage driver. I will add the compatible driver to the boot image using the supported servicing process. Finally, I will verify that the disk is detected during deployment.
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Q112. A WDS client is stuck at “Starting PXE over IPv4.” How would you troubleshoot it?
Answer:
First, I will verify that the client is configured to boot from the network using IPv4. I will check the network cable, switch port, VLAN, and DHCP availability. I will also confirm that the DHCP and WDS servers are reachable from the client network. Finally, I will review server logs and test PXE boot again.
Steps:
Q113. WDS works for clients on the local subnet but fails on a remote subnet. What would you do?
Answer:
First, I will confirm that WDS works correctly on the local subnet. I will check the remote subnet's DHCP relay, routing, and PXE forwarding configuration. I will also verify that the required network traffic can reach the WDS server. After correcting the remote network configuration, I will test PXE deployment from that subnet.
Steps:
Q114. A WDS client is not appearing in the pending devices list. How would you investigate?
Answer:
First, I will verify that the WDS server is configured to require administrator approval for unknown clients. I will check whether the client is reaching the WDS server and whether its MAC address is being detected. I will also review the PXE response settings and server logs. Finally, I will retry the boot process and verify whether the device appears.
Steps:
Q115. An unknown PXE client is not receiving a response from WDS. What would you do?
Answer:
First, I will check whether WDS is configured to respond to unknown clients. I will verify that the server is running and that the client can reach it through the network. I will also review approval settings and any client restrictions. After confirming the intended security policy, I will update the configuration if authorized and test the client again.
Steps:
Q116. WDS deployment fails because the installation image is corrupted. How would you troubleshoot it?
Answer:
First, I will check the deployment error and determine whether the installation image is damaged or inaccessible. I will verify the source installation media and compare it with a known-good copy. If the image is corrupted, I will import a verified image using the supported process. Finally, I will test the installation on a test device before wider deployment.
Steps:
Q117. A WDS deployment fails because the server does not have enough disk space. What would you do?
Answer:
First, I will check the available disk space on the volume storing the WDS images. I will identify large or obsolete files and confirm whether they can be removed safely. I will also verify that the image storage location has sufficient capacity for the planned deployments. After freeing space or expanding storage through an approved change, I will test the deployment.
Steps:
Q118. WDS clients can download the boot image but fail to download the installation image. How would you investigate?
Answer:
First, I will confirm that the boot image loads successfully and identify the stage where installation image transfer fails. I will check the installation image configuration, file accessibility, and available disk space. I will also review network connectivity and WDS logs for transfer errors. After correcting the issue, I will test the full deployment process.
Steps:
Q119. A WDS deployment fails after the server's IP address changes. What would you do?
Answer:
First, I will confirm the WDS server's new IP address and verify that it is reachable from the client subnet. I will check DHCP relay settings, PXE configuration, and any approved deployment references that still use the old address. I will also verify that the WDS service is running correctly. Finally, I will test PXE boot and image transfer.
Steps:
Q120. WDS clients receive a PXE-E53 error. How would you troubleshoot it?
Answer:
First, I will verify that the client is receiving a DHCP address and that a PXE boot server is available. I will check the DHCP relay configuration and confirm that WDS is configured to respond to the client. I will also verify the boot image and review WDS logs for errors. After correcting the issue, I will retry network boot.
Steps:
Q121. WDS clients receive a PXE-E55 error. What would you do?
Answer:
First, I will record the exact PXE error and confirm whether the client can reach the deployment server. I will check WDS service health, network connectivity, and the PXE configuration. I will also review the server's event logs to identify why the request is failing. Finally, I will test the client after resolving the identified issue.
Steps:
Q122. A WDS server is not responding to UEFI clients. How would you investigate?
Answer:
First, I will confirm that the affected devices are using UEFI and identify their processor architecture. I will check whether WDS has a compatible boot image and that the network boot configuration supports UEFI clients. I will also verify DHCP/PXE forwarding and the server's response settings. Finally, I will test with a known-compatible UEFI device.
Steps:
Q123. A WDS server is not responding to legacy BIOS clients. What would you check?
Answer:
First, I will verify that the client is configured for legacy BIOS network boot. I will check whether WDS has a compatible legacy boot image and whether the PXE response settings permit the client. I will also verify network connectivity and DHCP/PXE configuration. Finally, I will test with a supported legacy BIOS client.
Steps:
Q124. A WDS client boots into Windows PE but cannot connect to the deployment server. How would you troubleshoot it?
Answer:
First, I will check whether Windows PE has initialized the network adapter correctly. I will verify that the client has received an IP address and can reach the WDS server. I will also check DNS resolution if the deployment uses a server name and confirm that the required network drivers are present. After correcting the connectivity issue, I will restart the deployment process.
Steps:
Q125. A WDS client fails to install Windows because the target disk is not detected. What would you do?
Answer:
First, I will check whether the target disk is detected in BIOS or UEFI and in Windows PE. I will verify the storage controller mode and confirm that the correct storage driver is available. I will also check whether the disk is offline, uninitialized, or incorrectly configured. After resolving the storage issue, I will restart the installation process.
Steps:
Q126. WDS deployment is slow for clients. How would you troubleshoot it?
Answer:
First, I will determine whether slow deployment affects one client or multiple clients. I will check network speed, packet loss, server resource usage, and disk performance. I will also verify whether the deployment traffic is crossing a slow WAN link or congested network segment. After identifying the bottleneck, I will correct it and test deployment speed again.
Steps:
Q127. WDS deployment fails because the client cannot contact the domain controller. What would you do?
Answer:
First, I will check whether the client has network connectivity and a valid IP address during deployment. I will verify the DNS server settings and confirm that the client can resolve the domain controller's hostname. I will also check routing, firewall rules, and domain controller availability. Finally, I will test the domain-join stage again.
Steps:
Q128. A WDS installation image is available, but clients cannot select it. How would you investigate?
Answer:
First, I will verify that the installation image is enabled and configured correctly in WDS. I will check whether the image group, access settings, and deployment policies permit the client to use it. I will also verify architecture compatibility and review WDS logs. After correcting the configuration, I will test the image selection menu again.
Steps:
Q129. A WDS server cannot start because of a configuration error. What would you do?
Answer:
First, I will record the service error and review the WDS-related event logs. I will check the configured RemoteInstall directory, file permissions, storage availability, and deployment settings. I will identify the specific configuration problem before making changes. After correcting it, I will start the service and test a client deployment.
Steps:
Q130. WDS is using an incorrect RemoteInstall directory. How would you fix it?
Answer:
First, I will confirm the intended location of the deployment files and check whether the current directory contains the required images. I will verify available storage and permissions before changing the configuration. I will then use the supported WDS configuration procedure to correct the location and ensure that the service can access its files. Finally, I will test the deployment.
Steps:
Q131. A WDS deployment fails because of insufficient permissions. What would you do?
Answer:
First, I will identify which account or service is receiving the access-denied error. I will check permissions on the deployment files and folders and verify the account's required access. I will grant only the permissions needed for the deployment rather than using broad administrative access. Finally, I will retry the deployment and verify the result.
Steps:
Q132. WDS clients are booting from an outdated boot image. How would you troubleshoot it?
Answer:
First, I will identify the boot image currently being offered to clients. I will compare it with the approved image version and check whether the updated image has been imported into WDS. I will also verify that the PXE configuration points to the correct boot image. After updating the configuration, I will test the deployment on a client.
Steps:
Q133. A WDS deployment fails after a boot image is updated. What would you do?
Answer:
First, I will confirm that the failure began after the boot image update. I will check whether the new image is compatible with the target hardware and contains the required network and storage drivers. I will review WDS logs and the image servicing history for errors. If necessary, I will restore the last known-good image using the approved recovery process.
Steps:
Q134. PXE boot works on one computer but fails on another. How would you troubleshoot it?
Answer:
First, I will compare the hardware, firmware settings, and network configuration of both computers. I will check whether the affected device uses a different architecture or boot mode. I will also verify its MAC address, VLAN, and compatibility with the available boot image. Finally, I will test the affected device after correcting any differences.
Steps:
Q135. WDS clients cannot download files because TFTP traffic is blocked. What would you do?
Answer:
First, I will confirm that the deployment failure is related to TFTP communication. I will review firewall rules and network security policies between the clients and the WDS server. I will coordinate with the network team to allow the required traffic according to the approved deployment design. Finally, I will verify that clients can download the boot files.
Steps:
Q136. A WDS server is not responding to PXE requests after a network change. How would you troubleshoot it?
Answer:
First, I will confirm what network changes were made and identify the affected client subnets. I will check the WDS server's IP address, VLAN connectivity, DHCP relay settings, and firewall rules. I will also verify that the WDS service is running and configured to respond to the clients. Finally, I will test PXE boot from an affected subnet.
Steps:
Q137. WDS clients are not receiving the correct boot image for their architecture. What would you do?
Answer:
First, I will identify the architecture and firmware mode of the affected clients. I will check whether the correct boot images are imported and whether PXE settings select the appropriate image. I will also review the configuration used to direct clients to boot files. After correcting the selection, I will test clients of each supported architecture.
Steps:
Q138. A WDS client receives a boot image but cannot continue to the deployment menu. How would you investigate?
Answer:
First, I will identify whether Windows PE loads completely or fails before displaying the deployment menu. I will check boot image integrity, hardware compatibility, and required drivers. I will also verify the WDS service and review client-side and server-side errors. After correcting the issue, I will repeat the boot process.
Steps:
Q139. WDS deployment fails during partitioning. What would you do?
Answer:
First, I will check the deployment error and determine whether the target disk is detected correctly. I will verify that the partitioning configuration matches the client's UEFI or legacy BIOS boot mode. I will also confirm that the target disk can be modified and that the deployment task uses the correct partition layout. Finally, I will test the installation on a suitable device.
Steps:
Q140. A WDS deployment fails because the target disk has insufficient space. How would you resolve it?
Answer:
First, I will check the target disk's capacity and the space required by the Windows image. I will verify whether existing partitions are consuming the available space. I will confirm the approved disk layout before deleting or resizing any partition. Finally, I will ensure sufficient space is available and retry the installation.
Steps:
Q141. A WDS client fails to join the domain after Windows installation. What would you do?
Answer:
First, I will check whether the installed computer has a valid IP address and can reach the domain controller. I will verify DNS settings and confirm that the domain name resolves correctly. I will also check the domain-join credentials, permissions, and any relevant deployment configuration. Finally, I will retry the domain join and verify that the computer account is created or updated correctly.
Steps:
Q142. WDS deployment fails because the computer name is duplicated. How would you troubleshoot it?
Answer:
First, I will confirm whether another computer already uses the requested hostname in the domain. I will check the deployment naming configuration and the existing computer account in Active Directory. I will assign a unique, approved computer name and verify that it complies with organizational naming standards. Finally, I will retry the deployment or domain-join process.
Steps:
Q143. WDS deployment fails because the server cannot access the installation source. What would you do?
Answer:
First, I will verify that the installation image exists in the configured location and that the WDS server can access it. I will check file permissions, storage availability, and any path changes. I will also review WDS logs for file access errors. After restoring access to the source, I will test deployment with a client.
Steps:
Q144. WDS deployment is failing for many clients at the same time. How would you handle it?
Answer:
First, I will determine whether the failure affects all clients or only a particular subnet or hardware type. I will check WDS service availability, DHCP/PXE communication, server resources, and image availability. I will restore the affected deployment service using the approved recovery procedure and communicate the impact to the relevant team. Finally, I will validate deployment with a test client before resuming normal activity.
Steps:
Q145. A WDS deployment server is experiencing high network utilization. What would you do?
Answer:
First, I will determine whether the high utilization is caused by multiple simultaneous image deployments or another source of traffic. I will check server network performance and monitor the affected switch ports and network segments. I will coordinate with the network team if congestion affects other services. After addressing the bottleneck, I will test deployment speed and overall network performance.
Steps:
Q146. A WDS server is not displaying the expected deployment images after a server migration. What would you do?
Answer:
First, I will verify that the migration included the required boot and installation images. I will check the configured RemoteInstall location and confirm that the image files are accessible. I will also verify image registration and WDS configuration on the new server. Finally, I will restore or import any missing images and test deployment.
Steps:
Q147. WDS clients fail because the deployment server has incorrect date or time settings. How would you troubleshoot it?
Answer:
First, I will check the server's date, time, and time zone. I will verify time synchronization with the approved time source and investigate any significant clock differences. I will also review the deployment error to confirm whether time synchronization is actually contributing to the failure. After correcting the time configuration, I will test deployment again.
Steps:
Q148. A WDS client fails because its network boot is disabled in BIOS or UEFI. What would you do?
Answer:
First, I will verify that the device supports network boot and determine whether PXE boot is disabled in its firmware settings. I will check the boot order and network adapter configuration. I will enable the approved network boot option and confirm that the device uses the correct boot mode. Finally, I will restart the computer and test PXE deployment.
Steps:
Q149. A WDS server is not responding after a Windows Server update. How would you troubleshoot it?
Answer:
First, I will confirm whether WDS stopped working immediately after the update. I will check the WDS service, server configuration, network connectivity, and event logs. I will also verify that the update did not affect required deployment components or drivers. After identifying the cause, I will apply an approved fix and test PXE deployment.
Steps:
Q150. A complete WDS deployment outage prevents multiple computers from being installed. How would you handle the incident?
Answer:
First, I will assess the outage and identify which deployment servers, client networks, and installation images are affected. I will check WDS and DHCP services, PXE communication, image availability, and server resources. I will restore deployment using the approved recovery procedure and keep the IT manager informed about the impact. After recovery, I will validate the process with a test computer and document the root cause.
Steps:
