A. ping: This is like shouting out to see if a friend can hear you. If they shout back, you know they’re there and you can reach them. If they don’t, they might be too far away, or something might be blocking your voice. B. nslookup: This is like looking up a friend’s house in a neighborhood directory. It tells you where their house is located. C. net use: This is like creating a secret path directly to your friend’s hiding spot. Once the path is set up, you can use it to send messages back and forth easily. D. ipconfig: This is like looking at a map of your neighborhood. It shows you where you are, and gives information about the paths leading to your friends’ houses. So in this case I believe it to be PING

Shouldn't you use ping FIRST to see if you can communicate with the server? What good is net use if you can't reach the \\servername

net use   This subcommand of the Windows net command enables a user to connect, disconnect, and view information about existing connections to network resources.

Has a technician earning 200 dollars a month I agree with this

This is correct.