The answer is the IAM role attached to the instance lacks the cloudwatch:PutMetricData permission. The CloudWatch agent relies on the instance’s IAM role to authenticate and authorize API calls; without this specific action, the agent can successfully start and read its configuration but will silently fail when attempting to send custom metrics, as it never receives an authorization to write to the CloudWatch namespace. On the AWS Certified Security Specialty SCS-C02 exam, this scenario tests your understanding of least-privilege IAM policies and the agent’s dependency on the instance profile—a common trap is assuming a valid configuration file or a running agent service guarantees data delivery, when in fact the agent logs a “403 AccessDenied” only if verbose logging is enabled. Remember the mnemonic: “Put to Put” – the agent must have the PutMetricData permission to put metrics into CloudWatch.
SCS-C02 Security Logging and Monitoring Practice Question
This SCS-C02 practice question tests your understanding of security logging and monitoring. 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 DevOps engineer notices that an EC2 instance's CloudWatch agent is not sending custom metrics to CloudWatch. The agent is installed and the configuration file is valid. The instance has an IAM role attached. What is the most likely reason for the failure?
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The IAM role attached to the instance does not have the cloudwatch:PutMetricData permission.
The CloudWatch agent needs permissions to put metrics. If the IAM role lacks the 'cloudwatch:PutMetricData' action, the agent will fail silently.
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 instance does not have internet access to reach CloudWatch endpoints.
Why it's wrong here
If using a VPC, a VPC endpoint or NATgateway is needed, but the question does not indicate network issues.
✗
The CloudWatch agent is not running as root.
Why it's wrong here
The agent does not require root; it runs as the cwagent user.
✗
The CloudWatch agent configuration file has a syntax error.
Why it's wrong here
The question states the configuration file is valid.
✓
The IAM role attached to the instance does not have the cloudwatch:PutMetricData permission.
Why this is correct
The CloudWatch agent requires the CloudWatchAgentServerPolicy or equivalent with PutMetricData.
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.
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 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 SCS-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.
Security Logging and Monitoring — This question tests Security Logging and Monitoring — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The IAM role attached to the instance does not have the cloudwatch:PutMetricData permission. — The CloudWatch agent needs permissions to put metrics. If the IAM role lacks the 'cloudwatch:PutMetricData' action, the agent will fail silently.
What should I do if I get this SCS-C02 question wrong?
Identify which SCS-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.
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.
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 →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This SCS-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 SCS-C02 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.