_____ uses hardware or software to create a barrier that prevents unwanted messages or instructions from entering a computer system.
A) A firewall
B) Spyware
C) Adware
D) A rootkit

Question

Quizplus · Accepted Answer

A firewall is a security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules, effectively creating a barrier to block unwanted access.

_____ Uses Hardware or Software to Create a Barrier That