CS0-003 Incident Response and Management Practice Question
During a post-incident review, the incident response team identifies that the mean time to detect (MTTD) for incidents is significantly higher than industry benchmarks. Which of the following improvements would most directly reduce MTTD?
⚠ Common exam trap
The trap is conflating detection with response; candidates may choose options that improve response (more analysts, tabletop exercises) but the question specifically asks for reducing MTTD, which requires faster detection mechanisms like automated threat intelligence alerting.
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
✓
Implementing automated alerting based on threat intelligence.
Mean time to detect (MTTD) measures how quickly incidents are identified. Implementing automated alerting based on threat intelligence directly improves detection speed by continuously monitoring for known indicators of compromise and generating alerts in real time. This reduces the time between an incident occurring and the team becoming aware of it.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Increasing the number of forensic analysts on call.
Why it's wrong here
Additional forensic analysts add capacity to investigate and scope an incident once it has already been identified, which improves mean time to respond or contain, but staffing alone does nothing to shorten the window between initial compromise and the moment detection tooling or processes actually surface the activity.
- ✗
Conducting more frequent tabletop exercises.
Why it's wrong here
Tabletop exercises build muscle memory for how the team coordinates and communicates once an incident is declared, improving response quality and decision-making, but they are a rehearsal of the response phase and have no direct mechanism for accelerating the detection of a real intrusion in production telemetry.
- ✓
Implementing automated alerting based on threat intelligence.
Why this is correct
Automated alerting driven by threat intelligence continuously matches live telemetry against known indicators of compromise and behavioral patterns in near real time, directly closing the gap between when malicious activity occurs and when it is surfaced to an analyst, which is precisely the mechanism that lowers mean time to detect.
- ✗
Rotating credentials after each incident.
Why it's wrong here
Rotating credentials after an incident is a containment and recovery action that prevents an attacker from reusing stolen access, applied only after detection has already occurred; it has no bearing on how quickly the initial compromise is identified in the first place.
Go deeper
Related to this question
Learn chapter
OSINT Sources for Threat Intelligence
Key term
Threat intelligence
Threat intelligence is evidence-based knowledge about existing or emerging cyber threats that helps organizations defend against attacks.
Key term
Threat
A threat is any potential danger that could harm a computer system, network, or data, whether from a malicious hacker, a natural disaster, or an accidental mistake.
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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 CS0-004 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 CS0-004 exam.