SOA-C02 Monitoring, Logging, and Remediation Practice Question
This SOA-C02 practice question tests your understanding of monitoring, logging, and remediation. 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 SysOps administrator needs to monitor the memory utilization of an EC2 instance running Amazon Linux 2. Which of the following is required to publish memory metrics to CloudWatch?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Install and configure the CloudWatch agent on the instance.
The CloudWatch agent is specifically designed to collect custom metrics, such as memory utilization, from EC2 instances and publish them to CloudWatch. Unlike the default EC2 monitoring, which only captures hypervisor-level metrics (CPU, network, disk), memory utilization requires an in-guest agent to read from the operating system's /proc/meminfo or similar interfaces. The CloudWatch agent can be configured via a JSON file to collect memory metrics and send them to CloudWatch using the PutMetricData API.
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.
✗
Use the CloudWatch Logs agent to parse memory usage from system logs.
Why it's wrong here
The CloudWatch Logs agent collects logs, not metrics.
✓
Install and configure the CloudWatch agent on the instance.
Why this is correct
The CloudWatch agent can collect custom metrics like memory.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable detailed monitoring on the instance.
Why it's wrong here
Detailed monitoring provides more frequent CPU metrics, not memory.
✗
Install the AWS Systems Manager Agent (SSM Agent) and configure it to send metrics.
Why it's wrong here
SSM Agent does not send memory metrics to CloudWatch by default.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse 'detailed monitoring' (which increases frequency of existing hypervisor metrics) with the ability to collect in-guest metrics, or they assume the SSM Agent or CloudWatch Logs agent can perform metric collection, when only the CloudWatch agent is designed for that purpose.
Detailed technical explanation
How to think about this question
The CloudWatch agent uses the procstat plugin to read memory metrics from /proc/meminfo on Linux, or from Performance Counters on Windows, and then aggregates them into CloudWatch metrics. A common subtlety is that the agent must have IAM permissions (e.g., CloudWatchAgentServerPolicy) attached to the instance role to call PutMetricData. In real-world scenarios, failing to configure the 'append_dimensions' section in the agent config can lead to missing instance-level dimensions, making it hard to correlate metrics across instances.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
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: Install and configure the CloudWatch agent on the instance. — The CloudWatch agent is specifically designed to collect custom metrics, such as memory utilization, from EC2 instances and publish them to CloudWatch. Unlike the default EC2 monitoring, which only captures hypervisor-level metrics (CPU, network, disk), memory utilization requires an in-guest agent to read from the operating system's /proc/meminfo or similar interfaces. The CloudWatch agent can be configured via a JSON file to collect memory metrics and send them to CloudWatch using the PutMetricData API.
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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