The correct answer involves using the CloudWatch agent or the AWS CLI with the put-metric-data command, combined with an IAM role that grants PutMetricData permissions. This works because the EC2 instance must have an authorized identity to interact with the CloudWatch API; the IAM role provides temporary credentials that allow the instance to publish custom metrics securely, without hardcoding access keys. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of the integration between IAM roles and CloudWatch for custom monitoring, often appearing as a two-step selection where one option is the permission mechanism and the other is the publishing method. A common trap is choosing an IAM user or access keys instead of a role, or forgetting that the CloudWatch agent can also handle custom metrics alongside standard logs. Memory tip: think “Role + Put” — the instance needs a role to put data.
SOA-C02 Monitoring, Logging, and Remediation Practice Question
This SOA-C02 practice question tests your understanding of monitoring, logging, and remediation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 needs to set up monitoring for an application that runs on an EC2 instance. The application generates custom metrics that should be available for analysis in CloudWatch. Which steps are required to achieve this? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Attach an IAM role to the EC2 instance with permissions to call PutMetricData.
Option A is correct because the EC2 instance must have an IAM role attached with permissions to call PutMetricData, which authorizes the instance to publish custom metrics to CloudWatch. Without this IAM role, any attempt to send metrics from the instance will fail due to missing credentials.
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.
✓
Attach an IAM role to the EC2 instance with permissions to call PutMetricData.
Why this is correct
The instance needs IAM permissions to publish custom metrics.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create an SNS topic and subscribe the application to send metrics.
Why it's wrong here
SNS is for notifications, not for publishing metrics.
✗
Install the CloudWatch Logs agent to send custom metrics.
Why it's wrong here
The CloudWatch Logs agent sends logs, not metrics.
✓
Use the CloudWatch agent or AWS CLI to publish custom metrics using the put-metric-data command.
Why this is correct
Custom metrics can be published via the CloudWatch agent or CLI.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable detailed monitoring on the EC2 instance to collect custom metrics.
Why it's wrong here
Detailed monitoring collects EC2 default metrics more frequently, not custom metrics.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing the CloudWatch Logs agent with the CloudWatch agent, as the Logs agent cannot send custom metrics, and assuming detailed monitoring automatically captures application-level metrics rather than just increasing the frequency of default EC2 metrics.
Detailed technical explanation
How to think about this question
The CloudWatch agent can collect custom metrics by reading from a statsd or collectd daemon, or by executing a script that outputs metrics in JSON format, then publishing them via the PutMetricData API. The PutMetricData API accepts up to 20 metrics per call and 150 KB of payload, and metrics are stored as data points with timestamps, units, and dimensions for filtering.
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: Attach an IAM role to the EC2 instance with permissions to call PutMetricData. — Option A is correct because the EC2 instance must have an IAM role attached with permissions to call PutMetricData, which authorizes the instance to publish custom metrics to CloudWatch. Without this IAM role, any attempt to send metrics from the instance will fail due to missing credentials.
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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