CS0-003 Reporting and Communication Practice Question
A security analyst is selecting Key Performance Indicators (KPIs) for a security operations dashboard. Which THREE metrics are most relevant for measuring incident response effectiveness? (Select THREE.)
⚠ Common exam trap
The trap is selecting business or HR metrics (number of employees, revenue growth) because they appear on executive dashboards — but the question specifically asks for incident response effectiveness KPIs, which are time-based detection and remediation metrics.
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
✓
Mean time to detect (MTTD)
Option B, Mean time to detect (MTTD), is correct because it directly measures how quickly the security operations team identifies a potential incident from the moment it occurs, which is a core indicator of detection capability and monitoring effectiveness. Option C, Mean time to remediate (MTTRem), is correct because it quantifies the time required to fully resolve or contain an incident after detection, reflecting the team's ability to restore normal operations and limit business impact. Option E, Mean time to respond (MTTR), is correct because it measures the elapsed time from detection to the start of active response actions, showing how promptly analysts engage with and begin handling a confirmed incident. Option A, Number of employees, is not a security operations performance metric and does not reflect incident response effectiveness. Option D, Revenue growth, is a business financial metric unrelated to the speed or quality of incident detection, response, or remediation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Number of employees
Why it's wrong here
This metric simply counts the size of the workforce. It does not measure any aspect of security operations, such as incident detection, response, or remediation. While headcount may inform staffing decisions for a security team, it is not an outcome-based KPI and provides no insight into how quickly threats are identified or resolved.
- ✓
Mean time to detect (MTTD)
Why this is correct
Mean time to detect measures the average duration between when an incident or attack first occurs and when the security team actually becomes aware of it. A lower MTTD indicates stronger monitoring, alerting, and threat-hunting capabilities, allowing the organization to minimize the window in which attackers can operate undetected. It is specifically focused on the detection phase of the incident response lifecycle.
- ✓
Mean time to remediate (MTTRem)
Why this is correct
Mean time to remediate tracks the elapsed time from the point of detection through containment, eradication, and full recovery, reflecting how effectively the organization can eliminate the threat and restore normal operations. This metric is distinct from response time because it encompasses the entire fix cycle, including patching, re-imaging, and validating that the root cause has been removed. A shorter remediation time reduces business disruption and limits the potential for reinfection.
- ✗
Revenue growth
Why it's wrong here
Revenue growth is a financial performance indicator that measures the increase in a company's earnings over a period. While a cyber incident can indirectly harm revenue through downtime or reputational damage, this metric does not quantify the efficiency of security operations, such as detection speed or containment. It is therefore not a relevant KPI for a security analyst tracking incident response performance.
- ✓
Mean time to respond (MTTR)
Why this is correct
Mean time to respond measures the average duration between when an incident is detected and when the security team begins active response actions, such as triage, initial containment, or launching the incident response plan. This KPI focuses on the readiness and agility of the response team rather than the complete eradication of the threat, which falls under remediation. A lower MTTR indicates that analysts are quick to initiate countermeasures after an alert is verified.
Visual reference
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Related to this question
Learn chapter
Remediation SLAs and Risk Acceptance
Key term
Security
Security in IT is the practice of protecting systems, networks, and data from unauthorized access, damage, or theft.
Key term
Incident response
Incident response is the structured approach an organization uses to identify, contain, and recover from cybersecurity incidents like data breaches or ransomware attacks.
About these practice questions
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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.