The answer is that the EC2 instance does not have the tag 'Environment' with value 'non-production'. This is correct because the IAM policy tag condition explicitly requires the resource to possess that exact key-value pair for the StartInstances and StopInstances actions to be allowed; if the tag is missing or has a different value, the condition fails and the action is denied by default. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your understanding of resource-based condition keys in IAM policies, specifically how `aws:ResourceTag` differs from `aws:RequestTag`—a common trap is confusing whether the condition applies to the resource’s existing tags or to tags supplied in the API call. Remember the memory tip: “ResourceTag checks what’s on the instance, RequestTag checks what’s in the request.”
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Refer to the exhibit. An IAM policy is created for an automated script that starts and stops EC2 instances. The script is failing to stop an instance with the tag 'Environment: non-production'. What is the most likely cause?
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
✓
The EC2 instance does not have the tag 'Environment' with value 'non-production'.
Option B is correct because the policy allows StartInstances and StopInstances, but the condition requires the instance to have the tag 'Environment' with value 'non-production'. If the instance does not have this exact tag, the action is denied. Option A is wrong because the condition is on the resource, not the request. Option C is wrong because the policy does allow StopInstances for specific resources. Option D is wrong because the policy allows Describe* for all resources.
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 EC2 instance does not have the tag 'Environment' with value 'non-production'.
Why this is correct
The condition requires the instance to have that exact tag; otherwise, the action is denied.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The policy does not include ec2:StopInstances action.
Why it's wrong here
The policy includes both Start and Stop.
✗
The policy does not allow ec2:Describe* actions for instances.
Why it's wrong here
Describe* is allowed for all resources.
✗
The condition is applied to the ec2:StartInstances action but not ec2:StopInstances.
Why it's wrong here
The condition applies to both actions in the list.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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.
Technology — This question tests Technology — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The EC2 instance does not have the tag 'Environment' with value 'non-production'. — Option B is correct because the policy allows StartInstances and StopInstances, but the condition requires the instance to have the tag 'Environment' with value 'non-production'. If the instance does not have this exact tag, the action is denied. Option A is wrong because the condition is on the resource, not the request. Option C is wrong because the policy does allow StopInstances for specific resources. Option D is wrong because the policy allows Describe* for all resources.
What should I do if I get this PAS-C01 question wrong?
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.
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?
Read the scenario before looking for a memorised answer.
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Question Discussion
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