Firewalls are
A)special materials used to insulate computer facilities
B)a system that enforces access control between two networks
C)special software used to screen Internet access
D)none of the above

Question

Quizplus · Accepted Answer

Firewalls are a system that enforces access control between two networks. They are designed to prevent unauthorized access to or from a private network. Firewalls can be software or hardware-based and are an essential component of network security. Option A is incorrect as firewalls are not materials but systems or software. Option C is partially correct as one of the uses of firewall is to screen Internet access, but it does more than that. Option D is incorrect as the correct option is B.

Firewalls Are