The answer is AWS CloudTrail, because it is the only service that records every API call made in an AWS account, capturing the caller identity, time, source IP, and request parameters for complete audit trails. For compliance and security analysis, CloudTrail delivers these logs to an S3 bucket where lifecycle policies can enforce retention for at least one year, meeting the requirement for long-term secure storage. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this question tests your understanding of CloudTrail as the primary auditing tool, often contrasting it with services like AWS Config (which tracks resource configuration changes, not API calls) or Amazon GuardDuty (which detects threats). A common trap is confusing CloudTrail with CloudWatch Logs, but remember: CloudTrail is for who did what and when, while CloudWatch is for performance metrics and log monitoring. Memory tip: “Trail” tracks the trail of every API call, so think “Trail for the trail of API activity.”
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 audit all API calls made in an AWS account for compliance and security analysis. The logs must be stored securely for at least one year. Which AWS service should the administrator enable?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "least"
Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS CloudTrail
AWS CloudTrail is the correct service because it records all API calls made in an AWS account, including the identity of the caller, the time of the call, the source IP address, and the request parameters. This audit log is essential for compliance and security analysis, and CloudTrail can be configured to store logs in an S3 bucket with lifecycle policies to retain them for at least one year.
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.
✓
AWS CloudTrail
Why this is correct
CloudTrail records API activity and delivers log files to S3, enabling auditing and compliance needs.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Amazon CloudWatch Logs
Why it's wrong here
CloudWatch Logs is used to collect and store log data from applications and resources, not API calls.
✗
AWS Config
Why it's wrong here
AWS Config records resource configuration changes, not API call activity.
✗
Amazon GuardDuty
Why it's wrong here
GuardDuty is a security monitoring service that identifies threats; it does not provide a complete audit trail of API calls.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse CloudTrail with CloudWatch Logs, thinking CloudWatch Logs can capture API calls, but CloudWatch Logs only stores logs from services that explicitly send them, not the full audit trail of API activity.
Detailed technical explanation
How to think about this question
CloudTrail delivers log files in JSON format to an S3 bucket, and each log file contains multiple events with fields such as eventSource, eventName, userIdentity, and requestParameters. For compliance, you can enable log file validation using SHA-256 hashing and digital signatures to ensure integrity, and use S3 lifecycle policies to automatically transition logs to Glacier after 90 days for cost-effective long-term retention.
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 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
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: AWS CloudTrail — AWS CloudTrail is the correct service because it records all API calls made in an AWS account, including the identity of the caller, the time of the call, the source IP address, and the request parameters. This audit log is essential for compliance and security analysis, and CloudTrail can be configured to store logs in an S3 bucket with lifecycle policies to retain them for at least one year.
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.
Are there clue words in this question I should notice?
Yes — watch for: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This SOA-C02 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 SOA-C02 exam.
Question Discussion
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