You want to terminate your X session. Which of the following key combinations will you use to
accomplish this?

A.
Ctrl+Alt+F7

B.
Ctrl+Alt+Backspace

C.
Ctrl+Alt+Fn

D.
Ctrl+Alt+A

Explanation:

The Ctrl+Alt+Backspace key combination is used to terminate the X session.
Answer option A is incorrect. The Ctrl+Alt+F7 key combination is used to switch from a virtual
console back to the X terminal.
Answer option C is incorrect. The Ctrl+Alt+Fn key combination is used to switch from graphical
mode to the nth (n varies from 1-6) virtual console running in text mode.
Answer option D is incorrect. Ctrl+Alt+A is not a valid key combination to terminate the X session.