A.To allow remote logins, the user's private key must be copied to the remote server.

B.For each user account, there is exactly one key pair that can be used to log into that account.

C.The private key must never be revealed to anyone.

D.Several different public keys may be generated for the same private key.

E.To maintain the private key's confidentiality, the SSH key pair must be created by its owner.

A.Set a network interface active or inactive.

B.Allow regular users to change the network configuration of a network interface.

C.Specify the kernel module to be used with a network interface.

D.Change the netmask used on a network interface.

E.Specify which network services are available on a network interface.

A.The process ID of the echo command.

B.The exit value of the command executed immediately before echo.

C.The process ID which will be used for the next command.

D.The exit value of the echo command.

E.The process ID of the current shell.

A.Set the UID for the user to 0.

B.Add the user to /etc/noaccess.

C.Remove the user from the group staff.

D.Create a .nologin file in the user's home directory.

E.Run the command chsh -s /bin/false with the user name.