Which of the following is a characteristic of a firewall?
A
Examines each message as it seeks entrance to the network
B
Blocks messages without the correct markings from entering the network
C
Detects computers communicating with the Internet without approval
D
All of the above
Correct Answer: All of the above
The characteristic of a firewall Examines each message as it seeks entrance to the network, Blocks messages without the correct markings from entering the network and Detects computers communicating with the Internet without approval.