The correct answer involves two steps: attaching an IAM role with `logs:PutLogEvents` permissions to the EC2 instance and creating a VPC endpoint for CloudWatch Logs (com.amazonaws.region.logs). The IAM role is essential because the instance must sign API requests to authenticate and authorize log delivery, and without it, the CloudWatch Logs service will reject the data even if network connectivity is established. The VPC endpoint, powered by AWS PrivateLink, provides private connectivity so that the EC2 instance in a private subnet can send logs directly to CloudWatch Logs without needing an internet gateway, NAT gateway, or traversing the public internet. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of hybrid networking and least-privilege access—a common trap is assuming a NAT gateway alone suffices, but the endpoint is required for private subnets. Remember the memory tip: “Role to write, endpoint for the route”—the IAM role authorizes the write action, while the VPC endpoint provides the private network path.
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 company has a VPC with public and private subnets. An EC2 instance in a private subnet needs to send logs to CloudWatch Logs. Which steps are necessary to allow this without traversing the internet? (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 instance with permissions to call PutLogEvents.
Option B is correct because the EC2 instance must have an IAM role attached that includes permissions for `logs:PutLogEvents` to authenticate and authorize log delivery to CloudWatch Logs. Without this role, the instance cannot sign API requests, even if network connectivity exists. Option C is correct because a VPC endpoint for CloudWatch Logs (com.amazonaws.region.logs) provides private connectivity via AWS PrivateLink, allowing the instance to send logs without traversing the internet or a NATgateway.
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.
✗
Place the instance in a public subnet with a public IP.
Why it's wrong here
Placing in a public subnet exposes the instance to the internet.
✓
Attach an IAM role to the instance with permissions to call PutLogEvents.
Why this is correct
The instance needs IAM permissions to send logs to CloudWatch Logs.
Related concept
Read the scenario before looking for a memorised answer.
✓
Create a VPC endpoint for CloudWatch Logs (com.amazonaws.region.logs).
Why this is correct
A VPC endpoint enables private connectivity to CloudWatch Logs.
Related concept
Read the scenario before looking for a memorised answer.
✗
Ensure the instance is in the default VPC.
Why it's wrong here
Default VPC does not provide private access to CloudWatch Logs.
✗
Attach a NAT gateway to the private subnet's route table.
Why it's wrong here
A NATgateway provides internet access, not private access to CloudWatch Logs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume a NATgateway is required for private subnet outbound traffic, but for AWS services like CloudWatch Logs, a VPC endpoint provides a more secure and direct path without internet traversal.
Detailed technical explanation
How to think about this question
A VPC endpoint for CloudWatch Logs uses AWS PrivateLink to create a private connection between the VPC and the CloudWatch Logs service, routing traffic through the AWS network without leaving it. The endpoint is associated with a route table entry that directs traffic for the CloudWatch Logs service prefix list to the endpoint's elastic network interface. The IAM role must include a trust policy allowing the EC2 service to assume it, and the permissions policy must grant `logs:PutLogEvents`, `logs:CreateLogGroup`, and `logs:CreateLogStream` as needed.
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 instance with permissions to call PutLogEvents. — Option B is correct because the EC2 instance must have an IAM role attached that includes permissions for `logs:PutLogEvents` to authenticate and authorize log delivery to CloudWatch Logs. Without this role, the instance cannot sign API requests, even if network connectivity exists. Option C is correct because a VPC endpoint for CloudWatch Logs (com.amazonaws.region.logs) provides private connectivity via AWS PrivateLink, allowing the instance to send logs without traversing the internet or a NAT gateway.
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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