The correct answer is to install the CloudWatch agent on the EC2 instances and configure the disk metric. This is because the standard EC2 monitoring—both basic and detailed—only captures hypervisor-level metrics like CPU and network, not guest OS-level data such as disk space utilization. The CloudWatch agent runs inside the instance and can collect custom metrics from the operating system, including disk, memory, and swap usage, which are essential for comprehensive monitoring. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your understanding of the distinction between host-level and guest-level monitoring, a common trap where candidates confuse detailed monitoring with OS metrics. Remember that Systems Manager Inventory tracks software configurations, not disk space. A quick memory tip: "Agent for OS, CloudWatch for host"—if it lives inside the instance, you need the agent.
DOP-C02 Monitoring and Logging Practice Question
This DOP-C02 practice question tests your understanding of monitoring and logging. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A DevOps team wants to monitor the disk space utilization on their EC2 instances. What is the simplest way to achieve this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Install the CloudWatch agent on the EC2 instances and configure the disk metric.
Option D is correct because the CloudWatch agent can collect disk metrics from EC2 instances. Option A is wrong because basic monitoring does not include disk metrics. Option B is wrong because detailed monitoring also does not include disk metrics. Option C is wrong because Systems Manager Inventory is for software inventory, not disk space.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use AWS Systems Manager Inventory to collect disk space data.
Why it's wrong here
Inventory collects software and configuration data, not real-time disk space.
✓
Install the CloudWatch agent on the EC2 instances and configure the disk metric.
Why this is correct
The CloudWatch agent collects disk space metrics and sends them to CloudWatch.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable EC2 detailed monitoring in CloudWatch.
Why it's wrong here
Detailed monitoring increases frequency but still does not include disk space.
✗
Use EC2 basic monitoring in CloudWatch.
Why it's wrong here
Basic monitoring only includes CPU, network, and disk I/O, not disk space.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Monitoring and Logging — This question tests Monitoring and Logging — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Install the CloudWatch agent on the EC2 instances and configure the disk metric. — Option D is correct because the CloudWatch agent can collect disk metrics from EC2 instances. Option A is wrong because basic monitoring does not include disk metrics. Option B is wrong because detailed monitoring also does not include disk metrics. Option C is wrong because Systems Manager Inventory is for software inventory, not disk space.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This DOP-C02 practice question is part of Courseiva's free Amazon Web Services 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 DOP-C02 exam.
Question Discussion
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