A technician is trying to request a new IP address to a customer’s computer through the command
prompt. Which of the following commands should the technician use?

A.
ipconfig /flushdns

B.
ipconfig /renew

C.
ipconfig /all

D.
ipconfig /release

Explanation:
http://www.wikihow.com/Refresh-Your-IP-Address-on-a-Windows-Computer