- A
AWS Cost Explorer
Why wrong: AWS Cost Explorer is used to visualize, understand, and analyze historical cost and usage data. It is not designed to create cost estimates for a new, unbuilt architecture. It works with actual incurred costs, not hypothetical future configurations.
- B
AWS Total Cost of Ownership (TCO) Calculator
Why wrong: The AWS TCO Calculator compares the cost of running infrastructure on-premises versus running on AWS. It requires input about existing on-premises servers, storage, and networking. It is not suitable for estimating costs for a new, cloud-native application that does not have an on-premises baseline.
- C
AWS Budgets
Why wrong: AWS Budgets allows you to set cost or usage budgets and receive alerts when you exceed or are forecasted to exceed your thresholds. It is used for monitoring and controlling costs after they have started accruing, not for estimating the cost of a planned architecture.
- D
AWS Pricing Calculator
The AWS Pricing Calculator enables users to estimate the monthly cost of AWS services by selecting specific configurations (e.g., EC2 instance type, RDS database class, S3 storage class, etc.), regions, and pricing models. It provides a detailed cost breakdown and is the correct tool for pre-deployment cost estimation.
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 startup is planning a new web application on AWS. The architecture will use Amazon EC2 for compute, Amazon RDS for the database, and Amazon S3 for static assets. The team needs to estimate the monthly cost of running this application before building it. They want to compare costs across different instance types, regions, and pricing models (On-Demand vs. Reserved Instances), and they also need to account for data transfer costs. Which AWS tool should the team use to create this estimate?
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 (formerly AWS Simple Monthly Calculator) is the correct tool because it allows users to estimate monthly costs by selecting specific EC2 instance types, RDS configurations, S3 storage classes, and data transfer volumes. It supports comparing On-Demand vs. Reserved Instance pricing across different regions, making it ideal for pre-build cost estimation.
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
AWS Cost Explorer is used to visualize, understand, and analyze historical cost and usage data. It is not designed to create cost estimates for a new, unbuilt architecture. It works with actual incurred costs, not hypothetical future configurations.
- ✗
AWS Total Cost of Ownership (TCO) Calculator
Why it's wrong here
The AWS TCO Calculator compares the cost of running infrastructure on-premises versus running on AWS. It requires input about existing on-premises servers, storage, and networking. It is not suitable for estimating costs for a new, cloud-native application that does not have an on-premises baseline.
- ✗
AWS Budgets
Why it's wrong here
AWS Budgets allows you to set cost or usage budgets and receive alerts when you exceed or are forecasted to exceed your thresholds. It is used for monitoring and controlling costs after they have started accruing, not for estimating the cost of a planned architecture.
- ✓
AWS Pricing Calculator
Why this is correct
The AWS Pricing Calculator enables users to estimate the monthly cost of AWS services by selecting specific configurations (e.g., EC2 instance type, RDS database class, S3 storage class, etc.), regions, and pricing models. It provides a detailed cost breakdown and is the correct tool for pre-deployment cost estimation.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing cost estimation tools (Pricing Calculator) with cost management tools (Cost Explorer, Budgets) or TCO analysis, leading candidates to pick a tool that analyzes past spend rather than future projections.
Detailed technical explanation
How to think about this question
The AWS Pricing Calculator uses a per-resource pricing model, pulling real-time pricing data from the AWS Price List API. It accounts for data transfer costs (e.g., $0.09/GB for internet egress) and supports 1-year and 3-year Reserved Instance terms with partial or full upfront payment options. This tool is essential for startups to model cost scenarios before deployment, avoiding surprise bills from misconfigured resources.
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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Billing, Pricing, and Support — study guide chapter
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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 (formerly AWS Simple Monthly Calculator) is the correct tool because it allows users to estimate monthly costs by selecting specific EC2 instance types, RDS configurations, S3 storage classes, and data transfer volumes. It supports comparing On-Demand vs. Reserved Instance pricing across different regions, making it ideal for pre-build cost estimation.
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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