This PAS-C01 practice question tests your understanding of operations and maintenance. 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 company runs SAP on AWS and wants to ensure that all API calls to create, modify, or delete EC2 instances are logged for auditing. Which TWO AWS services can be used together to achieve this? (Choose two.)
AWS CloudTrail
CloudTrail records all EC2 API calls.
Amazon S3 server access logs
Why wrong: These log S3 access, not EC2 API calls.
AWS Config
Why wrong: AWS Config records configuration changes, not all API calls.
Amazon CloudWatch Logs
CloudWatch Logs can store and monitor CloudTrail logs.
Amazon VPC Flow Logs
Why wrong: Flow Logs capture network traffic, not API calls.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
AWS CloudTrail
Options A and C are correct. AWS CloudTrail logs API calls. Amazon CloudWatch Logs can store the logs for analysis. Option B (VPC Flow Logs) captures network traffic, not API calls. Option D (AWS Config) tracks configuration changes but not all API calls. Option E (S3 server access logs) logs access to S3 buckets.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS CloudTrail
Why this is correct
CloudTrail records all EC2 API calls.
Related concept
Read the scenario before looking for a memorised answer.
Amazon S3 server access logs
Why it's wrong here
These log S3 access, not EC2 API calls.
AWS Config
Why it's wrong here
AWS Config records configuration changes, not all API calls.
Amazon CloudWatch Logs
Why this is correct
CloudWatch Logs can store and monitor CloudTrail logs.
Related concept
Read the scenario before looking for a memorised answer.
Amazon VPC Flow Logs
Why it's wrong here
Flow Logs capture network traffic, not API calls.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Operations and Maintenance — This question tests Operations and Maintenance — Read the scenario before looking for a memorised answer..
The correct answer is: AWS CloudTrail — Options A and C are correct. AWS CloudTrail logs API calls. Amazon CloudWatch Logs can store the logs for analysis. Option B (VPC Flow Logs) captures network traffic, not API calls. Option D (AWS Config) tracks configuration changes but not all API calls. Option E (S3 server access logs) logs access to S3 buckets.
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
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.
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