Which device is the first line of defense in a defense-in-depth approach to network security?

ITExamAnswers Editorial Team Last Updated: Mar 12, 2026

IT Exam Items Repository › Category: Cybersecurity Essentials › Which device is the first line of defense in a defense-in-depth approach to network security?

Which device is the first line of defense in a defense-in-depth approach to network security?

Switch
Firewall
Internal Router
Edge Router

Explanation: Edge router: The first line of defense is known as an edge router. The edge router has a set of rules specifying which traffic it allows or denies. It passes all connections that are intended for the internal LAN to the firewall.

About The Author

ITExamAnswers Editorial Team

The ITExamAnswers Editorial Team is a dedicated group of certified IT professionals and network engineers. We rigorously review, verify, and update all exam materials to ensure you receive the most accurate and reliable resources for your certification journey.