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By Palo Alto Networks · Question Mode

QuestionQ27

Network Security

What function does a Network-Based Intrusion Detection System (NIDS) perform?

  • A Scanning and quarantining infected files on a host machine
  • B Proxying traffic before reaching an internal network
  • C Blocking malicious traffic from entering a network in real time
  • D Monitoring network traffic and reporting results to an administrator
Explanation

A NIDS monitors traffic across a network and alerts or reports suspicious activity to administrators. It is primarily a detection and reporting control rather than a host antivirus, proxy, or inline traffic-blocking system.

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