The answer is to enable S3 server access logging, stream those logs to CloudWatch Logs, create a metric filter for external IP addresses, and set a CloudWatch alarm. This solution is correct because it captures every request to the bucket in detailed log records, then uses a metric filter to count only those entries where the source IP falls outside the corporate network’s known CIDR range, triggering an alarm for immediate notification. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your ability to combine S3 logging with CloudWatch monitoring rather than relying on S3 Event Notifications or AWS Config, which lack real-time IP-based filtering. A common trap is choosing S3 Event Notifications with Lambda, but those cannot natively filter by source IP address—only CloudWatch Logs metric filters can parse log entries for external IPs. Remember the chain: logs flow to CloudWatch, filter finds the outsider, alarm alerts the insider.
SOA-C02 Monitoring, Logging, and Remediation Practice Question
This SOA-C02 practice question tests your understanding of monitoring, logging, and remediation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 stores sensitive data in an S3 bucket. The security team requires that any access to the bucket from outside the corporate network be logged and immediately alerted. Which solution meets these requirements?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "immediately / without restart"
Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable S3 server access logging, stream logs to CloudWatch Logs, create a metric filter for external IP addresses, and set a CloudWatch alarm.
Option B is correct because it combines S3 server access logging with CloudWatch Logs streaming, metric filtering for external IP addresses, and a CloudWatch alarm. This provides both logging and immediate alerting for any access from outside the corporate network, meeting the security team's requirements.
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.
✗
Enable S3 server access logging and store logs in a separate bucket for later analysis.
Why it's wrong here
This logs access but does not provide immediate alerts.
✓
Enable S3 server access logging, stream logs to CloudWatch Logs, create a metric filter for external IP addresses, and set a CloudWatch alarm.
Why this is correct
This provides both logging and real-time alerting for external access.
Clue confirmation
The clue word "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable AWS CloudTrail and create a metric filter for 'GetObject' events, then set a CloudWatch alarm.
Why it's wrong here
This would alert on all GetObject calls, not just from outside the network.
✗
Use AWS Config rules to detect when the bucket policy is changed to allow public access.
Why it's wrong here
This only detects policy changes, not actual access.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS CloudTrail (which logs API calls) with S3 server access logs (which log object-level access), leading them to choose Option C without realizing CloudTrail requires explicit data event logging and does not provide the same granularity for immediate alerting on external IP access.
Detailed technical explanation
How to think about this question
S3 server access logs contain detailed records of requests, including the requester's IP address, which can be streamed to CloudWatch Logs using a subscription filter. A metric filter can then parse these logs to match external IP addresses (e.g., those not in a defined CIDR range), and a CloudWatch alarm triggers an action (like an SNS notification) when the metric exceeds a threshold. This architecture ensures near-real-time alerting for unauthorized access attempts.
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: Enable S3 server access logging, stream logs to CloudWatch Logs, create a metric filter for external IP addresses, and set a CloudWatch alarm. — Option B is correct because it combines S3 server access logging with CloudWatch Logs streaming, metric filtering for external IP addresses, and a CloudWatch alarm. This provides both logging and immediate alerting for any access from outside the corporate network, meeting the security team's requirements.
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: "immediately / without restart". Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
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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