- A
AWS Cost Explorer
Why wrong: AWS Cost Explorer analyzes historical costs and usage, and provides forecasts, but it requires existing data from an active AWS account. It is not suitable for estimating costs before any resources are created.
- B
AWS Budgets
Why wrong: AWS Budgets allows you to set custom cost and usage budgets and receive alerts when you exceed or are forecasted to exceed your budget. It does not provide a way to estimate costs for a planned migration before any resources exist.
- C
AWS Pricing Calculator
The AWS Pricing Calculator is a free web-based tool that lets you estimate the cost of AWS services based on your specific input parameters, such as instance types, storage, and data transfer. It is ideal for planning a migration before any AWS resources are created.
- D
AWS Trusted Advisor
Why wrong: AWS Trusted Advisor inspects your AWS environment and provides recommendations for cost optimization, security, performance, and fault tolerance. It requires an active AWS account with existing resources and does not provide pre-migration 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 startup is planning to migrate its web application to AWS. The CTO wants to estimate the monthly cost of running the application on Amazon EC2 and Amazon RDS, including data transfer costs. The team has not yet created any AWS accounts or resources. They need a tool that allows them to input assumptions about instance types, storage, and data transfer to generate a detailed cost estimate. 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 (option C) is the correct tool because it allows users to input assumptions about EC2 instance types, RDS configurations, storage, and data transfer to generate a detailed monthly cost estimate before any AWS resources are created. Unlike Cost Explorer, which requires existing usage data, the Pricing Calculator is designed for upfront cost modeling and planning.
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 analyzes historical costs and usage, and provides forecasts, but it requires existing data from an active AWS account. It is not suitable for estimating costs before any resources are created.
- ✗
AWS Budgets
Why it's wrong here
AWS Budgets allows you to set custom cost and usage budgets and receive alerts when you exceed or are forecasted to exceed your budget. It does not provide a way to estimate costs for a planned migration before any resources exist.
- ✓
AWS Pricing Calculator
Why this is correct
The AWS Pricing Calculator is a free web-based tool that lets you estimate the cost of AWS services based on your specific input parameters, such as instance types, storage, and data transfer. It is ideal for planning a migration before any AWS resources are created.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Trusted Advisor
Why it's wrong here
AWS Trusted Advisor inspects your AWS environment and provides recommendations for cost optimization, security, performance, and fault tolerance. It requires an active AWS account with existing resources and does not provide pre-migration cost estimates.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS Cost Explorer (which requires existing usage data) with the AWS Pricing Calculator (which is specifically designed for pre-provisioning cost estimation), leading them to select Cost Explorer when no AWS account or resources exist yet.
Detailed technical explanation
How to think about this question
The AWS Pricing Calculator uses a pricing engine that queries the AWS Price List API in real time to compute costs based on selected instance families, storage volumes (e.g., gp3, io1), data transfer tiers (e.g., 0-1 GB/month free, then per-GB rates), and optional Reserved Instance or Savings Plan discounts. A subtle behavior is that the calculator does not include taxes or promotional credits, and data transfer costs are estimated using the 'Data Transfer OUT From Amazon EC2 to Internet' rate table, which varies by region (e.g., us-east-1 charges $0.09/GB for the first 10 TB/month).
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 (option C) is the correct tool because it allows users to input assumptions about EC2 instance types, RDS configurations, storage, and data transfer to generate a detailed monthly cost estimate before any AWS resources are created. Unlike Cost Explorer, which requires existing usage data, the Pricing Calculator is designed for upfront cost modeling and planning.
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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