Which command pair obtains a new IP address from a DHCP server?

Which command pair obtains a new IP address from a DHCP server?

• A. ipconfig /renew followed by ipconfig /release.
• B. nslookup and ipconfig /release.
• C. ipconfig /flushdns and netsh winsock reset.
• D. ipconfig /release followed by ipconfig /renew.

Answer: (D)

Dynamic IP addressing relies on DHCP to assign addresses. To obtain a new IP from the DHCP server, you first release the current address and then renew, which tells the server you’re free to take a new lease and prompts a new assignment. The release step frees the old IP, and the renew step requests a (potentially different) address. Doing release before renew guarantees a fresh lease from DHCP, whereas renewing first might simply rebind to the same address. The other options don’t interact with DHCP to fetch a new IP: one pair involves DNS-related actions, and the others reset DNS or the Winsock stack, which don’t change the IP address.

Dynamic IP addressing relies on DHCP to assign addresses. To obtain a new IP from the DHCP server, you first release the current address and then renew, which tells the server you’re free to take a new lease and prompts a new assignment. The release step frees the old IP, and the renew step requests a (potentially different) address. Doing release before renew guarantees a fresh lease from DHCP, whereas renewing first might simply rebind to the same address. The other options don’t interact with DHCP to fetch a new IP: one pair involves DNS-related actions, and the others reset DNS or the Winsock stack, which don’t change the IP address.