In computing, ______ is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

Options

A. cookie
B. spyware
C. spam
D. firewall

Answer

D

Explanation

A Firewall is a network security device that monitors and filters incoming and outgoing network traffic based on an organization.s previously established security policies. At its most basic, a firewall is essentially the barrier that sits between a private internal network and the public Internet.