A.The process ID of the current shell.

B.The process ID of the echo command.

C.The process ID for the following command.

D.The process ID of the last command which has been placed in the background.

E.The process ID of the last command executed.

A.When X is restarted

B.When KDM starts

C.When KDM crashes

D.When a user's X session exits

E.When X crashes

A.By a fixed UUID that is defined in the X11 configuration file.

B.By a display name like: 1.

C.By the name of the user that runs the X server like x11:bob.

D.By a device name like /dev/X11/xservers/1.

E.By a unique IPv6 address from the fe80::/64subnet.

A.A B

B.A C

C.A B C

D.B C

E.C B A