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Monitoring, Logging, and Remediation →hardMultiple ChoiceObjective-mapped

SOA-C02 Monitoring, Logging, and Remediation Practice Question

This SOA-C02 practice question tests your understanding of monitoring, logging, and remediation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 SysOps administrator is troubleshooting an issue where an EC2 instance's CloudWatch agent is not sending memory metrics. The agent is installed and configured to collect memory metrics. The IAM role attached to the instance has the following policy:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "cloudwatch:PutMetricData",
      "Resource": "*"
    },
    {
      "Effect": "Allow",
      "Action": "cloudwatch:ListMetrics",
      "Resource": "*"
    }
  ]
}

What is the most likely reason the memory metrics are not appearing?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

A
The CloudWatch agent requires the SSM Agent to be installed.
Correct. The CloudWatch agent typically requires the SSM Agent to retrieve configuration from Parameter Store. Without it, the agent may not apply the memory metric collection settings.
B
The CloudWatch agent must be configured to send metrics to CloudWatch Logs first.
Why wrong: Incorrect. Sending metrics to CloudWatch is independent of sending logs to CloudWatch Logs. The agent can send metrics without configuring logs.
C
The IAM role is missing the cloudwatch:PutMetricData permission.
Why wrong: Incorrect. The IAM policy explicitly includes cloudwatch:PutMetricData, so the permission is not missing. The agent has the necessary permission to publish metrics.
D
Detailed monitoring must be enabled on the EC2 instance.
Why wrong: Incorrect. Detailed monitoring is for EC2 basic metrics (e.g., CPU, network) and does not affect custom metrics collected by the CloudWatch agent.

Full breakdown with real-world context →

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

✓

The CloudWatch agent requires the SSM Agent to be installed.

The IAM policy includes cloudwatch:PutMetricData and cloudwatch:ListMetrics, so permissions are sufficient. However, if the CloudWatch agent retrieves its configuration from Systems Manager Parameter Store (a common setup), the instance must have the SSM Agent installed and running to fetch the configuration. Without the SSM Agent, the agent cannot obtain the configuration that specifies to collect memory metrics, even if the agent is installed and configured locally. Therefore, option A is correct.

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.

✓
The CloudWatch agent requires the SSM Agent to be installed.
Why this is correct
Correct. The CloudWatch agent typically requires the SSM Agent to retrieve configuration from Parameter Store. Without it, the agent may not apply the memory metric collection settings.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The CloudWatch agent must be configured to send metrics to CloudWatch Logs first.
Why it's wrong here
Incorrect. Sending metrics to CloudWatch is independent of sending logs to CloudWatch Logs. The agent can send metrics without configuring logs.
✗
The IAM role is missing the cloudwatch:PutMetricData permission.
Why it's wrong here
Incorrect. The IAM policy explicitly includes cloudwatch:PutMetricData, so the permission is not missing. The agent has the necessary permission to publish metrics.
✗
Detailed monitoring must be enabled on the EC2 instance.
Why it's wrong here
Incorrect. Detailed monitoring is for EC2 basic metrics (e.g., CPU, network) and does not affect custom metrics collected by the CloudWatch agent.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Candidates often focus solely on IAM permissions and overlook the prerequisite of the SSM Agent when the CloudWatch agent uses Parameter Store for configuration. The question's policy includes PutMetricData, so option C is a distractor. The real issue is the missing SSM Agent, which is required for configuration retrieval.

Detailed technical explanation

How to think about this question

The CloudWatch agent uses the PutMetricData API to publish custom metrics, and the IAM policy must include cloudwatch:PutMetricData. Additionally, the agent often retrieves its configuration from AWS Systems Manager Parameter Store, which requires the ssm:GetParameter permission. Without that, the agent may fail to load the configuration even if PutMetricData is allowed. Memory metrics are collected by the agent's procstat or mem plugins, which read /proc/meminfo on Linux or Performance Counters on Windows, then aggregate and send to CloudWatch as a single PutMetricData call with up to 20 metrics per request.

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.

TExam Day Tips

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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this SOA-C02 question test?

Monitoring, Logging, and Remediation — This question tests Monitoring, Logging, and Remediation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The CloudWatch agent requires the SSM Agent to be installed. — The IAM policy includes cloudwatch:PutMetricData and cloudwatch:ListMetrics, so permissions are sufficient. However, if the CloudWatch agent retrieves its configuration from Systems Manager Parameter Store (a common setup), the instance must have the SSM Agent installed and running to fetch the configuration. Without the SSM Agent, the agent cannot obtain the configuration that specifies to collect memory metrics, even if the agent is installed and configured locally. Therefore, option A is correct.

What should I do if I get this SOA-C02 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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