A user is experiencing problems logging in to a Unix server. He can connect to the Internet over the LAN. Other users in the same area aren$$t experiencing any problems. You attempt logging in as this user from your workstation with his username and password and don$$t experience any problems. However, you cannot log in with either his username or yours from his workstation. What is a likely cause of the problem?

Group of answer choices

You have a downed server.

The Caps Lock key is pressed.

The network hub is malfunctioning.

You have a jabbering NIC.