CompTIA Server+ SK0-005 Practice Question

Several Windows 11 clients in a branch office obtain their TCP/IP settings from a Windows Server DHCP scope. After two old domain controllers (192.168.10.10 and 192.168.10.11) were replaced with new ones at the same IP addresses, users report that they can map the department share by IP (\192.168.10.25\Dept) but receive The network resource is unavailable when they try the hostname (\FS1.contoso.local\Dept). You verify that the A record for FS1.contoso.local points to 192.168.10.25.

On one affected workstation you run ipconfig /all and note:

DNS Servers  . . . . . . . . . : 192.168.50.10
                                     192.168.50.11

Which action will MOST likely restore access to the share for all users?

Update the DHCP scope so option 006 distributes 192.168.10.10 and 192.168.10.11, then have clients release and renew their leases.
Disable IPv6 on all client network adapters so that name resolution falls back to IPv4 only.
Increase the TTL of the FS1.contoso.local A record from 1 hour to 24 hours to prevent cache expiration.
Disable SMB signing on FS1 and restart the Server service to allow anonymous name resolution.

Report Issue

Answer Description

Name resolution is failing because the workstations are sending queries to the wrong DNS servers (192.168.50.10 and 192.168.50.11). The quickest way to correct this for every client is to fix the DHCP scope so option 006 hands out the correct DNS server addresses for the site (192.168.10.10 and 192.168.10.11) and then have clients renew their leases. Clearing caches or disabling IPv6 would not help while the incorrect DNS servers are still in use. SMB signing and record TTL do not affect whether a hostname can be resolved.

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