A(n) __________ works like a burglar alarm in that it detects a violation (some system activities analogous to an opened or broken window) and activates an alarm.

All of the following are included in the Security category of the Windows Action Center, EXCEPT ________

A) network firewall B) Internet security settings C) virus protection D) system backup

There are how many different types of cell references?

A) Four B) Five C) Three D) Two