A ____ may be used to filter data that may be undesirable.
A) port sniffer
B) firewall
C) zombie
D) botnet

Question

Quizplus · Accepted Answer

A firewall is a security system that controls access to a network. It can be used to filter undesirable data by examining the traffic to and from the network and blocking anything that does not meet certain criteria. Port sniffers are used to capture and analyze traffic on the network, while zombies and botnets are types of malicious software that can be used to carry out cyber-attacks, rather than to filter data.

A ____ May Be Used to Filter Data That May