The correct solution is to install the Amazon CloudWatch agent on each EC2 instance to collect system metrics and logs, and send them to CloudWatch. This is because the CloudWatch unified agent replaces the functionality of Nagios by providing a single, managed service that captures detailed system-level metrics (like memory and disk usage) and application logs from Linux instances, which the basic EC2 metrics cannot provide. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of migrating from third-party monitoring tools to native AWS services, often appearing in questions that contrast CloudWatch with AWS Systems Manager Inventory, CloudTrail, or Config. A common trap is confusing CloudTrail (API auditing) or Config (compliance) with real-time monitoring, but remember: CloudWatch is for metrics and logs, while the others serve different purposes. Memory tip: think of CloudWatch as your "watch" for health and logs, not just a trail or config checker.
DOP-C02 Monitoring and Logging Practice Question
This DOP-C02 practice question tests your understanding of monitoring and logging. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 company is migrating its on-premises applications to AWS and wants to maintain the same level of monitoring for its Linux-based EC2 instances. They currently use Nagios for monitoring. They want a managed AWS service that can monitor instance health, system metrics, and application logs. Which solution should they use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Install the Amazon CloudWatch agent on each EC2 instance to collect system metrics and logs, and send them to CloudWatch.
Option B is correct because CloudWatch unified agent collects system metrics and logs, and integrates with CloudWatch. Option A is wrong because Systems Manager Inventory is for software inventory, not real-time monitoring. Option C is wrong because CloudTrail is for API logging. Option D is wrong because Config is for configuration compliance.
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.
✓
Install the Amazon CloudWatch agent on each EC2 instance to collect system metrics and logs, and send them to CloudWatch.
Why this is correct
The CloudWatch agent can collect both metrics and logs, replacing Nagios.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use AWS CloudTrail to monitor instance activity and capture log files.
Why it's wrong here
CloudTrail monitors API calls, not instance-level metrics.
✗
Use AWS Systems Manager Inventory to collect system configuration and log files.
Why it's wrong here
Inventory is for configuration data, not real-time monitoring.
✗
Use AWS Config to track instance configuration changes and trigger alerts.
Why it's wrong here
Config is for configuration compliance, not real-time health monitoring.
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 Amazon CloudWatch agent on each EC2 instance to collect system metrics and logs, and send them to CloudWatch. — Option B is correct because CloudWatch unified agent collects system metrics and logs, and integrates with CloudWatch. Option A is wrong because Systems Manager Inventory is for software inventory, not real-time monitoring. Option C is wrong because CloudTrail is for API logging. Option D is wrong because Config is for configuration compliance.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A DevOps engineer is designing a monitoring solution for an application that runs on Amazon EC2 instances in an Auto Scaling group. The engineer needs to collect memory utilization metrics and visualize them in a dashboard. What should the engineer do?
medium
A.Create a custom CloudWatch metric namespace and publish memory data using the AWS CLI.
✓ B.Install the Amazon CloudWatch agent on the EC2 instances to collect memory metrics and publish them to CloudWatch.
C.Enable detailed monitoring on the EC2 instances to collect memory metrics.
D.Use AWS CloudTrail to capture memory utilization events from the EC2 instances.
Why B: Memory utilization is not available by default in CloudWatch. The CloudWatch agent must be installed to collect custom metrics. Option C is correct. Option A is incorrect because CloudWatch by default does not collect memory metrics. Option B is incorrect as a custom CloudWatch metric is needed, not a custom namespace without agent. Option D is incorrect because AWS CloudTrail does not capture memory metrics.
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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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