Here’s the Answer to the Question posted on Facebook
Q. Which of the following commands removes a DHCP assigned IP address for a client?
A. Ipconfig /renew
B. Ipconfig /release
C. Ipconfig /displaydns
D. Ipconfig /flushdns
Answer available until June 29, 2016.
See Chapter 9 of the CompTIA A+ Training Kit (ISBN 978-0735662681) by Darril Gibson.