PAS-C01 Operations and Maintenance Practice Question
An SAP system running on EC2 is experiencing intermittent connectivity issues between application servers and the database server. The network team suspects that the security group rules are too restrictive. What is the best approach to identify which traffic is being blocked?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable VPC Flow Logs on the subnet or ENI and review the logs for rejected traffic.
VPC Flow Logs capture metadata about IP traffic going to and from network interfaces in a VPC. They can show accepted and rejected traffic, making them ideal for identifying blocked traffic. Option A is wrong because SAP application logs only show connection errors from the application's perspective, not network-level blocking. Option B is wrong because CloudTrail logs API calls (e.g., security group changes), not network traffic. Option C is wrong because CloudWatch metrics aggregate network data but do not provide per-packet detail to identify rejected traffic.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Check the SAP application logs for connection errors.
Why it's wrong here
Application logs indicate symptoms but not the network layer blocking.
- ✗
Enable AWS CloudTrail and look for security group modification events.
Why it's wrong here
CloudTrail is for API activity, not network traffic analysis.
- ✗
Use Amazon CloudWatch to monitor network packets.
Why it's wrong here
CloudWatch does not provide packet-level details.
- ✓
Enable VPC Flow Logs on the subnet or ENI and review the logs for rejected traffic.
Why this is correct
VPC Flow Logs capture information about IP traffic going to and from network interfaces.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-C01 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 PAS-C01 exam.