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Question 1,347 of 1,733

Operations and Maintenance →easyMultiple ChoiceObjective-mapped

Quick Answer

The correct answer is that the user 'sapadmin' stopped the instance i-0abcdef1234567890, as confirmed by the eventName field reading StopInstances and the userIdentity details matching the specified user. This is accurate because CloudTrail log interpretation for the StopInstances event requires you to verify the eventName parameter against the AWS API call, while the eventSource field must indicate ec2.amazonaws.com to confirm it is an EC2 action, not an RDS or other service. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this tests your ability to parse CloudTrail logs for SAP-specific operational events, often appearing in scenario-based questions where a null responseElements field can be a trap—it does not indicate failure but rather a successful API call for certain EC2 actions like stopping instances. A common memory tip is to remember that for EC2 management events, a null responseElements typically means success, while an errorCode field would explicitly show failure.

PAS-C01 Operations and Maintenance Practice Question

This PAS-C01 practice question tests your understanding of operations and maintenance. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.

Exhibit

Refer to the exhibit.

```
{
  "Records": [
    {
      "eventVersion": "1.05",
      "userIdentity": {
        "type": "IAMUser",
        "arn": "arn:aws:iam::123456789012:user/sapadmin"
      },
      "eventTime": "2023-05-01T10:00:00Z",
      "eventSource": "ec2.amazonaws.com",
      "eventName": "StopInstances",
      "awsRegion": "us-east-1",
      "requestParameters": {
        "instancesSet": {
          "items": [
            {
              "instanceId": "i-0abcdef1234567890"
            }
          ]
        }
      },
      "responseElements": null
    }
  ]
}
```

Refer to the exhibit. A CloudTrail log entry shows that the user 'sapadmin' stopped an instance. Which of the following is true based on the log?

Question 1easymultiple choice

Full question →

Exhibit

Refer to the exhibit.

```
{
  "Records": [
    {
      "eventVersion": "1.05",
      "userIdentity": {
        "type": "IAMUser",
        "arn": "arn:aws:iam::123456789012:user/sapadmin"
      },
      "eventTime": "2023-05-01T10:00:00Z",
      "eventSource": "ec2.amazonaws.com",
      "eventName": "StopInstances",
      "awsRegion": "us-east-1",
      "requestParameters": {
        "instancesSet": {
          "items": [
            {
              "instanceId": "i-0abcdef1234567890"
            }
          ]
        }
      },
      "responseElements": null
    }
  ]
}
```

A
The StopInstances API call failed.
Why wrong: There is no error code; responseElements being null is typical for successful StopInstances.
B
The user 'sapadmin' started the instance.
Why wrong: The eventName is StopInstances.
C
The user 'sapadmin' stopped the instance i-0abcdef1234567890.
The log shows the event name and user.
D
The event was related to an RDS instance.
Why wrong: The eventSource is ec2.amazonaws.com.

Full breakdown with real-world context →

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

✓

The user 'sapadmin' stopped the instance i-0abcdef1234567890.

Option A is correct because the eventName is StopInstances and the user is sapadmin. Option B is wrong because the event is not a StartInstances. Option C is wrong because the eventSource is ec2.amazonaws.com, not rds. Option D is wrong because the event was successful (no error in responseElements, and responseElements is null but that does not indicate failure; in CloudTrail, a null responseElements often indicates success for some APIs).

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.

✗
The StopInstances API call failed.
Why it's wrong here
There is no error code; responseElements being null is typical for successful StopInstances.
✗
The user 'sapadmin' started the instance.
Why it's wrong here
The eventName is StopInstances.
✓
The user 'sapadmin' stopped the instance i-0abcdef1234567890.
Why this is correct
The log shows the event name and user.
Related concept
Read the scenario before looking for a memorised answer.
✗
The event was related to an RDS instance.
Why it's wrong here
The eventSource is ec2.amazonaws.com.

Common exam traps

Common exam trap: answer the scenario, not the keyword

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

How to think about this question

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.

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.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.

What to study next

Got this wrong? Here's your next step.

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

Questions learners often ask

What does this PAS-C01 question test?

Operations and Maintenance — This question tests Operations and Maintenance — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The user 'sapadmin' stopped the instance i-0abcdef1234567890. — Option A is correct because the eventName is StopInstances and the user is sapadmin. Option B is wrong because the event is not a StartInstances. Option C is wrong because the eventSource is ec2.amazonaws.com, not rds. Option D is wrong because the event was successful (no error in responseElements, and responseElements is null but that does not indicate failure; in CloudTrail, a null responseElements often indicates success for some APIs).

What should I do if I get this PAS-C01 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

About these practice questions

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Last reviewed: Jun 20, 2026

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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.