The answer is that CloudTrail was enabled to capture management events, which is the correct choice because CloudTrail records all IAM user actions, including creating access keys and subsequent API calls like S3 GetObject, as management events by default. This technical concept is key: CloudTrail’s management event logging captures control-plane operations such as IAM user creating access keys, while data-plane events like S3 object-level reads require separate enablement. On the AWS Certified Security Specialty SCS-C02 exam, this tests your understanding of CloudTrail’s default behavior versus optional logging—a common trap is confusing VPC Flow Logs or S3 server access logs with IAM action capture. Remember that CloudTrail is enabled by default for management events, so any IAM user creating access keys will automatically appear in the logs without additional configuration. A helpful memory tip: “Management events are mandatory; data events are optional.”
SCS-C02 Security Logging and Monitoring Practice Question
This SCS-C02 practice question tests your understanding of security logging and monitoring. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 security engineer is investigating a potential data exfiltration from an EC2 instance. CloudTrail logs show that an IAM user created a new access key for an existing IAM role and used it to call S3 GetObject from an unfamiliar IP address. What is the MOST likely reason the CloudTrail logs captured this activity?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
CloudTrail was enabled to capture management events.
Option B is correct because CloudTrail records IAM user actions, including creating access keys and API calls. Option A is wrong because VPC Flow Logs do not capture IAM actions. Option C is wrong because CloudTrail is enabled by default for management events. Option D is wrong because S3 server access logs do not capture IAM user actions.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
CloudTrail was enabled to capture management events.
Why this is correct
CloudTrail management events include IAM actions like creating access keys and API calls.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
S3 server access logs were enabled on the bucket containing the objects.
Why it's wrong here
S3 server access logs record requests to S3, not IAM user actions.
✗
VPC Flow Logs were enabled for the EC2 instance's subnet.
Why it's wrong here
VPC Flow Logs capture network traffic, not IAM actions.
✗
The security engineer had enabled CloudTrail Insights.
Why it's wrong here
CloudTrail Insights is for detecting unusual activity, not for basic logging.
✗
AWS Config was enabled to record resource changes.
Why it's wrong here
AWS Config records resource configuration changes, not API calls.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
CIDR notation defines the prefix length.
Block size helps identify subnet boundaries.
Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
The required host count determines the smallest suitable subnet.
TExam Day Tips
→Write the block size before choosing the subnet.
→Check whether the question asks for hosts, subnets or a specific address range.
→Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related SCS-C02 subnetting questions on CIDR, address ranges, and subnet selection.
Security Logging and Monitoring — This question tests Security Logging and Monitoring — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: CloudTrail was enabled to capture management events. — Option B is correct because CloudTrail records IAM user actions, including creating access keys and API calls. Option A is wrong because VPC Flow Logs do not capture IAM actions. Option C is wrong because CloudTrail is enabled by default for management events. Option D is wrong because S3 server access logs do not capture IAM user actions.
What should I do if I get this SCS-C02 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related SCS-C02 subnetting questions on CIDR, address ranges, and subnet selection.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Question Discussion
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