CV0-004 Operations and Support Practice Question
A cloud engineer wants to be notified when the average CPU utilization of an auto-scaling group exceeds 80% for 5 minutes. Which alerting mechanism should be used?
⚠ Common exam trap
CV0-004 often tests the distinction between monitoring/alerting services (CloudWatch) and configuration/compliance services (Config, Trusted Advisor), so candidates who see 'notify' and reach for a governance tool pick the wrong answer.
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
✓
AWS CloudWatch Alarm
AWS CloudWatch Alarms are purpose-built to watch a metric (like the Average CPUUtilization of an Auto Scaling group) and trigger actions when a threshold is breached for a defined number of evaluation periods. Configuring an alarm with a threshold of 80%, a period of 300 seconds, and the appropriate statistic/datapoints-to-alarm directly satisfies the 'exceeds 80% for 5 minutes' requirement. Alarms can then notify via SNS, trigger Auto Scaling, or invoke actions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Systems Manager OpsCenter
Why it's wrong here
OpsCenter aggregates and manages operational issues and incidents; it does not evaluate CloudWatch metric thresholds or dispatch notifications. It is tempting because OpsCenter centralises alerts, but it consumes alarms rather than creating them, so it would be correct only if the stem asked where to track and resolve an already-generated operational issue.
- ✗
AWS Config rule
Why it's wrong here
AWS Config rules evaluate resource configuration against desired states and flag non-compliance; they do not track CloudWatch metric thresholds over time. It is tempting because Config can trigger remediation, but CPU utilisation is a metric, so a Config rule would be correct only if the stem described detecting a configuration drift, such as an unencrypted bucket.
- ✗
AWS Trusted Advisor
Why it's wrong here
Trusted Advisor surfaces cost, security, fault-tolerance and service-limit recommendations, not metric thresholds; it cannot watch CPU utilisation over a five-minute window. It is tempting because it does flag operational risks, but that scenario is periodic best-practise review, whereas Amazon CloudWatch alarms evaluate metric thresholds and trigger notifications.
- ✓
AWS CloudWatch Alarm
Why this is correct
AWS CloudWatch Alarm evaluates metric thresholds over defined evaluation periods, so it directly satisfies the five-minute sustained average CPU condition. It monitors the auto-scaling group's aggregate metric and triggers notification actions when the 80% threshold is breached, unlike log-based or event-driven mechanisms that cannot assess rolling metric averages.
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 CV0-004 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 CV0-004 exam.