To protect a network when it is connected to the Internet, you should use a:

To protect a network when it is connected to the Internet, you should use a:
A . Bridge
B . Firewall
C . Switch
D . Router

View Answer

Answer: B

Explanation:

A firewall is software or hardware that checks information coming from the Internet or a network, and then either blocks it or allows it to pass through to your computer, depending on your firewall settings.