- A
AWS Cost Explorer with a cost allocation tag filter
Why wrong: AWS Cost Explorer helps visualize and analyze costs, but it cannot automatically stop instances when a cost threshold is exceeded. It is a reporting and analytics tool, not an action-taking service.
- B
AWS Budgets with a cost action
AWS Budgets allows you to set cost or usage budgets and attach actions (such as stopping EC2 instances) that are automatically triggered when the budget threshold is reached. This meets the requirement for no manual intervention.
- C
AWS Trusted Advisor with the cost optimization check
Why wrong: AWS Trusted Advisor provides recommendations to optimize costs, such as identifying idle instances, but it does not automatically take actions like stopping instances when a cost limit is exceeded. It is a guidance tool, not an enforcement tool.
- D
Amazon CloudWatch with a billing metric alarm
Why wrong: Amazon CloudWatch can monitor billing metrics (e.g., estimated charges) and trigger an alarm, but the alarm cannot directly stop EC2 instances. It can send notifications via SNS, but automated stopping would require additional custom integration (e.g., Lambda), which is not the native feature described.
CLF-C02 Billing, Pricing, and Support Practice Question
This CLF-C02 practice question tests your understanding of billing, pricing, and support. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 runs development and test environments on Amazon EC2 instances in separate AWS accounts. The finance team wants to automatically stop all non-production EC2 instances if the monthly development account costs exceed $1,000. The team needs a solution that requires no manual intervention and uses only AWS-native features. Which AWS feature should the team configure to meet these requirements?
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
AWS Budgets with a cost action
AWS Budgets allows you to set a cost budget with a cost action that automatically stops EC2 instances when the threshold is exceeded. This meets the requirement for no manual intervention and uses only AWS-native features, as the cost action can be configured to trigger an IAM policy or a service control policy (SCP) to stop instances in the development account.
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.
- ✗
AWS Cost Explorer with a cost allocation tag filter
Why it's wrong here
AWS Cost Explorer helps visualize and analyze costs, but it cannot automatically stop instances when a cost threshold is exceeded. It is a reporting and analytics tool, not an action-taking service.
- ✓
AWS Budgets with a cost action
Why this is correct
AWS Budgets allows you to set cost or usage budgets and attach actions (such as stopping EC2 instances) that are automatically triggered when the budget threshold is reached. This meets the requirement for no manual intervention.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Trusted Advisor with the cost optimization check
Why it's wrong here
AWS Trusted Advisor provides recommendations to optimize costs, such as identifying idle instances, but it does not automatically take actions like stopping instances when a cost limit is exceeded. It is a guidance tool, not an enforcement tool.
- ✗
Amazon CloudWatch with a billing metric alarm
Why it's wrong here
Amazon CloudWatch can monitor billing metrics (e.g., estimated charges) and trigger an alarm, but the alarm cannot directly stop EC2 instances. It can send notifications via SNS, but automated stopping would require additional custom integration (e.g., Lambda), which is not the native feature described.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS Cost Explorer's reporting capabilities with the ability to trigger automated responses, but only AWS Budgets with cost actions can execute predefined actions based on budget thresholds.
Detailed technical explanation
How to think about this question
AWS Budgets cost actions use AWS Identity and Access Management (IAM) policies or AWS Organizations service control policies (SCPs) to apply actions like stopping EC2 instances. When the budget threshold is exceeded, the action applies a policy that denies the ec2:StartInstances permission or directly stops instances via a predefined action, ensuring compliance without manual steps. This feature integrates with AWS Budgets to provide a fully automated cost governance solution.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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.
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Billing, Pricing, and Support — This question tests Billing, Pricing, and Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Budgets with a cost action — AWS Budgets allows you to set a cost budget with a cost action that automatically stops EC2 instances when the threshold is exceeded. This meets the requirement for no manual intervention and uses only AWS-native features, as the cost action can be configured to trigger an IAM policy or a service control policy (SCP) to stop instances in the development account.
What should I do if I get this CLF-C02 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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Last reviewed: Jun 11, 2026
This CLF-C02 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 CLF-C02 exam.
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