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SSCP · Question #944

A host-based IDS is resident on which of the following?

The correct answer is A. On each of the critical hosts. A host-based IDS (HIDS) is installed and runs directly on individual machines it is meant to protect - specifically the critical hosts in a network - monitoring system calls, logs, and file integrity on that specific device. Option B (decentralized hosts) is vague and doesn't…

Submitted by chen.hong· Apr 18, 2026Risk Identification, Monitoring and Analysis

Question

A host-based IDS is resident on which of the following?

Options

  • AOn each of the critical hosts
  • Bdecentralized hosts
  • Ccentral hosts
  • Dbastion hosts

How the community answered

(26 responses)
  • A
    96% (25)
  • B
    4% (1)

Explanation

A host-based IDS (HIDS) is installed and runs directly on individual machines it is meant to protect - specifically the critical hosts in a network - monitoring system calls, logs, and file integrity on that specific device. Option B (decentralized hosts) is vague and doesn't describe where HIDS software actually resides; decentralization is a network topology concept, not an IDS deployment target. Option C (central hosts) describes a network-based IDS (NIDS) architecture, where monitoring is centralized rather than per-device. Option D (bastion hosts) are hardened gateway machines exposed to untrusted networks - while a bastion host could run a HIDS, it is not the defining deployment target of a host-based IDS.

Memory tip: Think of the "H" in HIDS as standing for both "Host-based" and "Here on this machine" - unlike a network IDS that watches traffic from one central point, a HIDS lives on each critical host it watches.

Topics

#Host-based IDS#HIDS#Intrusion Detection

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