ipconfig /flushdns

After several changes to the network, a technician needs to ensure a client is checking for new hostname and IP pairings.

Which of the following commands should the technician use to force new lookups?

A.

ipconfig /flushdns

B.

ipconfig /release

C.

ipconfig /renew

D.

ipconfig /all.

A.

The command that the technician should use to force new lookups on a client after several changes to the network is "ipconfig /flushdns". This command will clear the DNS cache on the client and force it to perform a new DNS lookup for any hostname and IP pairings.

Explanation of the other commands:

• "ipconfig /release": This command releases the client's current IP address lease, making it available for another device to use. It does not have any effect on DNS lookups.
• "ipconfig /renew": This command requests a new IP address lease from the DHCP server. It does not have any effect on DNS lookups.
• "ipconfig /all": This command displays detailed information about all of the client's network connections, including IP addresses, DNS servers, and more. It does not have any effect on DNS lookups.

In summary, the correct command to force new DNS lookups on a client is "ipconfig /flushdns".