What command do you use to test the TCP/IP stack on a c…

What command do you use to test the TCP/IP stack on a computer?

A.
Ping localhost

B.
Ping 127.0.0.1

C.
Ping loopback

D.
ipconfig /renew

Explanation:
Defining a LAN

You can ping your own computer using the loopback address, also known as the local loopback. When pinging this address, no network traffic is
incurred; because the network adapter is really just looping the ping back to the OS, it never places any packets on to the network. Therefore, this is a solid way to
test whether TCP/IP is installed correctly to a network adapter, even if you aren’t physically connected to a network.