CAS-004 Security Operations Practice Question
An organization wants to detect and respond to advanced threats that may evade traditional endpoint security solutions. They deploy an EDR solution that provides real-time visibility into endpoint activities. However, the security team is overwhelmed by alerts. Which technology can be integrated with EDR to automate response actions and reduce alert fatigue?
⚠ Common exam trap
CAS-005 often tests the distinction between detection, orchestration, and response — the trap is choosing SIEM because it is familiar, when the question specifically asks for automation of response actions to reduce alert fatigue.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SOAR platform
A SOAR (Security Orchestration, Automation, and Response) platform integrates with EDR and other security tools to automate response actions such as isolating endpoints, blocking IPs, and enriching alerts, which directly reduces alert fatigue by handling repetitive triage tasks. SOAR playbooks codify response procedures and can execute them at machine speed, freeing analysts for higher-value work.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
SIEM with correlation rules
Why it's wrong here
SIEM correlation rules aggregate and alert on log events, which adds detection rather than automating response, so alert volume is not reduced. It is tempting because SIEM centralises EDR alerts, and it would be correct if the requirement were cross-source correlation instead of automated containment actions.
- ✗
Network traffic analysis (NTA)
Why it's wrong here
NTA analyses network flows for anomalous traffic; it neither consumes EDR telemetry nor triggers endpoint response actions. It is tempting because NTA detects threats that evade endpoint agents, and it would be correct if the gap were visibility into network-level activity rather than automating endpoint response.
- ✗
Deception technology
Why it's wrong here
Deception technology plants decoys to surface hidden intruders; it does not execute automated response actions or triage EDR alerts. It is tempting because deception aids threat detection, and it would be the right choice if the requirement were early detection of stealthy lateral movement rather than automating containment.
- ✓
SOAR platform
Why this is correct
A SOAR platform ingests EDR alerts and executes automated playbooks, enriching, correlating and remediating them without analyst intervention. This directly addresses the stated constraint of alert fatigue by reducing the volume requiring manual triage, while preserving the real-time endpoint visibility EDR already provides.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This CAS-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CAS-005 exam.