Is Telnet a server application, a client application, or a protocol?
The term Telnet could refer to either the server or the client Telnet application, or it could refer to the Telnet protocol.
Which file should you use if you want to designate a host as a trusted host?
Use the /etc/hosts.equiv file or the rhosts file in a user's home directory to designate a trusted host.
What utility would tell me if the user Ethelred is currently logged in to the network?
The rwho utility displays information on current users.
