- A
AWS Cost Explorer
Why wrong: Cost Explorer analyses actual historical spending on AWS resources already deployed. It cannot estimate costs for services not yet deployed.
- B
AWS Budgets
Why wrong: AWS Budgets sets spending alerts and cost thresholds for existing AWS usage. It monitors actual costs, not estimates for future architectures.
- C
AWS Pricing Calculator
AWS Pricing Calculator lets users build a cost estimate for any combination of AWS services without deploying anything. It supports detailed configuration of services and generates a shareable monthly cost estimate.
- D
AWS Trusted Advisor
Why wrong: Trusted Advisor analyses existing AWS account configurations and provides recommendations for cost optimisation, security, and performance. It does not generate pre-deployment cost estimates.
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 solutions architect is designing a new architecture on AWS that includes EC2, RDS, S3, and data transfer. Before deploying anything, they want to estimate the monthly cost of running this architecture. Which AWS tool should they use?
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 Pricing Calculator
AWS Pricing Calculator is the correct tool because it allows you to estimate the monthly cost of AWS services before deployment by specifying resource configurations (e.g., EC2 instance type, RDS storage, S3 data transfer). Unlike Cost Explorer, which analyzes historical costs, the Pricing Calculator provides upfront cost projections for new architectures.
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
Why it's wrong here
Cost Explorer analyses actual historical spending on AWS resources already deployed. It cannot estimate costs for services not yet deployed.
- ✗
AWS Budgets
Why it's wrong here
AWS Budgets sets spending alerts and cost thresholds for existing AWS usage. It monitors actual costs, not estimates for future architectures.
- ✓
AWS Pricing Calculator
Why this is correct
AWS Pricing Calculator lets users build a cost estimate for any combination of AWS services without deploying anything. It supports detailed configuration of services and generates a shareable monthly cost estimate.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Trusted Advisor
Why it's wrong here
Trusted Advisor analyses existing AWS account configurations and provides recommendations for cost optimisation, security, and performance. It does not generate pre-deployment cost estimates.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse AWS Cost Explorer (a historical analysis tool) with the Pricing Calculator (a pre-deployment estimation tool), leading them to pick A instead of C.
Detailed technical explanation
How to think about this question
The AWS Pricing Calculator uses a service-specific pricing model, factoring in variables like EC2 instance hours, EBS volume sizes, RDS database engine licensing, and data transfer egress rates (e.g., $0.09/GB for S3 to internet). It supports 'TCO' comparisons with on-premises costs, and can export estimates as CSV or share via a link. In real-world scenarios, architects use it to compare Reserved Instance vs. On-Demand pricing before committing to a purchase.
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.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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 Pricing Calculator — AWS Pricing Calculator is the correct tool because it allows you to estimate the monthly cost of AWS services before deployment by specifying resource configurations (e.g., EC2 instance type, RDS storage, S3 data transfer). Unlike Cost Explorer, which analyzes historical costs, the Pricing Calculator provides upfront cost projections for new architectures.
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.
About these practice questions
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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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