The answer is that the user can stop only production-tagged instances and cannot terminate any instances. This is correct because of the IAM policy evaluation order, where an explicit Deny statement always overrides any Allow, regardless of the order in which the rules are written. In this policy, a Condition block using StringNotEquals denies both ec2:StopInstances and ec2:TerminateInstances when the resource tag 'environment' is not equal to 'production', effectively blocking those actions on any non-production resource. On the CompTIA Cloud+ CV0-004 exam, this tests your understanding of how Deny overrides Allow in cloud IAM policies, a common trap being that students mistakenly think an Allow for a specific tag can bypass a broader Deny. The key memory tip is "Deny always wins"—no matter what Allow exists, a matching Deny will block the action, so always check for explicit Deny statements first in the evaluation order.
CV0-004 Cloud Architecture and Design Practice Question
This CV0-004 practice question tests your understanding of cloud architecture and design. 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.
A cloud architect reviews the above IAM policy attached to a user. What is the effect of this policy on the user's ability to stop or terminate instances?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The user can stop only production-tagged instances and cannot terminate any instances
The policy uses a Condition block with StringNotEquals to explicitly deny ec2:StopInstances and ec2:TerminateInstances when the resource tag 'environment' is not equal to 'production'. Since the Deny effect overrides any Allow, the user can only stop instances tagged with 'environment=production' and cannot terminate any instances because the TerminateInstances action is also denied for non-production tags and there is no Allow for termination.
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 user can stop any instance but cannot terminate any instance
Why it's wrong here
The Allow statement is conditional; only production-tagged instances can be stopped.
✓
The user can stop only production-tagged instances and cannot terminate any instances
Why this is correct
Allow is scoped to production-tagged, and Deny explicitly blocks termination.
Related concept
Read the scenario before looking for a memorised answer.
✗
The user can stop only production-tagged instances and terminate only production-tagged instances
Why it's wrong here
Deny applies to all resources, blocking termination entirely.
✗
The user can stop any instance and terminate any instance
Why it's wrong here
The Deny on termination overrides any allow.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the nuance that a Deny with a condition does not implicitly allow the action for matching resources—you must have an explicit Allow statement for the action to be permitted, and here termination is never allowed.
Detailed technical explanation
How to think about this question
In AWS IAM, a Deny with a condition using StringNotEquals creates a 'negative allow' pattern: the action is denied unless the condition is met. The ec2:StopInstances and ec2:TerminateInstances actions are evaluated separately; the policy only permits stopping instances with the specific tag, while termination is blocked entirely because the Deny condition applies to all instances without the production tag and no Allow exists for termination. This is a common pattern for enforcing lifecycle policies in multi-environment accounts.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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.
Cloud Architecture and Design — This question tests Cloud Architecture and Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The user can stop only production-tagged instances and cannot terminate any instances — The policy uses a Condition block with StringNotEquals to explicitly deny ec2:StopInstances and ec2:TerminateInstances when the resource tag 'environment' is not equal to 'production'. Since the Deny effect overrides any Allow, the user can only stop instances tagged with 'environment=production' and cannot terminate any instances because the TerminateInstances action is also denied for non-production tags and there is no Allow for termination.
What should I do if I get this CV0-004 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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