The issue is that the application may be using a different namespace than 'MyApp'. The IAM policy condition explicitly restricts the `cloudwatch:PutMetricData` action to only succeed when the `cloudwatch:namespace` condition key matches 'MyApp', so if the SDK code publishes metrics under any other namespace—such as 'AWS/EC2' or a custom namespace like 'MyOtherApp'—the condition fails and the API call is denied. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your ability to troubleshoot IAM policy conditions for PutMetricData, a common trap where candidates overlook the namespace restriction and assume a broader permission issue. A key memory tip is to think of the condition as a bouncer checking IDs at a club: the policy only lets in metrics with the exact name tag 'MyApp', and any other name gets turned away at the door.
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.
Refer to the exhibit. An application running on EC2 is using the AWS SDK to publish custom metrics to CloudWatch. The application fails to publish metrics. The IAM role attached to the EC2 instance has this policy. What is the issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The application may be using a different namespace than 'MyApp'.
The IAM policy explicitly allows 'cloudwatch:PutMetricData' on the condition that the namespace is 'MyApp'. If the application's AWS SDK code publishes metrics under a different namespace (e.g., 'AWS/EC2' or a custom namespace like 'MyOtherApp'), the condition fails and the API call is denied. This is the most likely cause of the failure, as the policy is otherwise correctly configured for the specified namespace.
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 condition key 'cloudwatch:namespace' is misspelled.
Why it's wrong here
It is spelled correctly.
✗
The policy does not specify a specific resource ARN.
Why it's wrong here
PutMetricData does not support resource-level permissions; '*' is correct.
✓
The application may be using a different namespace than 'MyApp'.
Why this is correct
The condition restricts to a specific namespace.
Related concept
Read the scenario before looking for a memorised answer.
✗
The action 'cloudwatch:PutMetricData' is not allowed for custom metrics.
Why it's wrong here
It is allowed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume a policy with a condition key is always correct, overlooking that the application's actual namespace value must exactly match the condition value for the API call to succeed.
Detailed technical explanation
How to think about this question
CloudWatch PutMetricData is a service-specific API that does not operate on a specific resource ARN; instead, it uses the namespace as a logical grouping. The IAM condition key 'cloudwatch:namespace' is evaluated against the 'Namespace' parameter in the API call. If the SDK sends a namespace that does not match the condition, the request is silently denied with an AccessDenied error, which can be confusing because the policy appears correct at first glance.
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.
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 application may be using a different namespace than 'MyApp'. — The IAM policy explicitly allows 'cloudwatch:PutMetricData' on the condition that the namespace is 'MyApp'. If the application's AWS SDK code publishes metrics under a different namespace (e.g., 'AWS/EC2' or a custom namespace like 'MyOtherApp'), the condition fails and the API call is denied. This is the most likely cause of the failure, as the policy is otherwise correctly configured for the specified namespace.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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