200-301: Cisco Certified Network AssociateDemo

By Cisco · Question Mode

QuestionQ1001

Security Fundamentals

What is a function of a firewall on an enterprise network?

  • A It allows and denies ingress and egress traffic.
  • B It serves as a default gateway to hosts on the internet.
  • C It processes traffic based on stateless inspection.
  • D It acts as the intermediary device between the enterprise and its ISP.
Explanation

A firewall is used to enforce traffic-control policy by allowing or denying inbound (ingress) and outbound (egress) network traffic according to configured security rules. That is the fundamental purpose of a firewall, whereas acting as a default gateway or simply being the device between an enterprise and its ISP is not its defining security function.

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