Which command sequence would you use to check and renew the IP address for a workstation and refresh DNS?

Which command sequence would you use to check and renew the IP address for a workstation and refresh DNS?

• A. ipconfig /release to release the current IP, ipconfig /renew to obtain a new IP, and ipconfig /flushdns to clear the DNS cache.
• B. ping, traceroute, nslookup, ipconfig /all.
• C. netsh int ip reset, ipconfig /displaydns, ipconfig /renew.
• D. ipconfig /flushdns, netsh Winsock reset, ping 8.8.8.8.

Answer: (A)

The important idea is using the IP configuration commands to refresh both the network address and the DNS resolver cache on Windows. First, release the current DHCP lease so the system tells the router it’s letting go of the address. Then renew to request a new address from the DHCP server, ensuring the workstation gets an up-to-date IP. Finally, flush the DNS cache to clear any stale name-to-IP mappings, so subsequent lookups don’t rely on old entries. This sequence provides a clean restart of both the IP assignment and DNS resolution, which is why it’s the best fit for checking and renewing the IP address while ensuring DNS is refreshed. The other options mix in diagnostic tools (like ping, traceroute, and nslookup) or steps that reset networking components without re-acquiring an IP or purging the DNS cache, so they don’t accomplish the full refresh in one cohesive workflow.

The important idea is using the IP configuration commands to refresh both the network address and the DNS resolver cache on Windows. First, release the current DHCP lease so the system tells the router it’s letting go of the address. Then renew to request a new address from the DHCP server, ensuring the workstation gets an up-to-date IP. Finally, flush the DNS cache to clear any stale name-to-IP mappings, so subsequent lookups don’t rely on old entries. This sequence provides a clean restart of both the IP assignment and DNS resolution, which is why it’s the best fit for checking and renewing the IP address while ensuring DNS is refreshed.

The other options mix in diagnostic tools (like ping, traceroute, and nslookup) or steps that reset networking components without re-acquiring an IP or purging the DNS cache, so they don’t accomplish the full refresh in one cohesive workflow.