Multiple choice

Which system establishes a barrier between a trusted, secure internal network and another network?

  1. Operating system

  2. Router

  3. Firewall

  4. Antivirus

  5. Spyware
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic by analyzing the data packets and determining whether they should be allowed through or not, based on a rule set. A firewall establishes a barrier between a trusted, secure internal network and another network (e.g., the Internet) that is not assumed to be secure and trusted.

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