- A
AWS Total Cost of Ownership (TCO) Calculator
Why wrong: The TCO Calculator is designed to compare on-premises infrastructure costs with AWS costs. It is not intended to estimate costs for a new AWS-only deployment with specific pricing options like Reserved Instances or Savings Plans.
- B
AWS Pricing Calculator
The AWS Pricing Calculator is the correct tool. It enables you to estimate AWS service costs before deployment, supporting various services, configurations, regions, and purchasing options (On-Demand, Reserved, Savings Plans).
- C
AWS Cost Explorer
Why wrong: AWS Cost Explorer analyzes historical cost and usage data. It cannot be used to estimate future costs of a not-yet-deployed architecture; it only works with existing data.
- D
AWS Budgets
Why wrong: AWS Budgets allows you to set spending thresholds and receive alerts or take actions when costs exceed a budget. It does not provide a cost estimation interface for new resources.
CLF-C02 Billing, Pricing, and Support Practice Question
This CLF-C02 practice question tests your understanding of billing, pricing, and support. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 planning a new web application on AWS. The workload will include 3 Amazon EC2 instances (t3.medium) running 24/7, an Application Load Balancer, and an Amazon RDS for MySQL db.t3.small database. The architect needs to estimate the monthly cost for the first year, considering different purchasing options (On-Demand, 1-year All Upfront Reserved Instance, and Compute Savings Plan). Which AWS tool should the architect use to create this estimate?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"first"Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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
The AWS Pricing Calculator (formerly Simple Monthly Calculator) is the correct tool for estimating monthly costs for specific AWS resources like EC2 instances, ALB, and RDS under different purchasing options (On-Demand, Reserved Instances, Savings Plans). It allows you to input exact instance types, quantities, and commitment terms to generate a detailed cost estimate for the first year.
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 Total Cost of Ownership (TCO) Calculator
Why it's wrong here
The TCO Calculator is designed to compare on-premises infrastructure costs with AWS costs. It is not intended to estimate costs for a new AWS-only deployment with specific pricing options like Reserved Instances or Savings Plans.
When this WOULD be correct
A question asking to compare the total cost of ownership between running a workload on-premises versus migrating it to AWS, including hardware, software, labor, and facilities costs.
- ✓
AWS Pricing Calculator
Why this is correct
The AWS Pricing Calculator is the correct tool. It enables you to estimate AWS service costs before deployment, supporting various services, configurations, regions, and purchasing options (On-Demand, Reserved, Savings Plans).
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Cost Explorer
Why it's wrong here
AWS Cost Explorer analyzes historical cost and usage data. It cannot be used to estimate future costs of a not-yet-deployed architecture; it only works with existing data.
When this WOULD be correct
A solutions architect needs to review the cost trends of existing EC2 instances over the past 6 months to identify underutilized resources. AWS Cost Explorer would be the correct tool for this historical analysis.
- ✗
AWS Budgets
Why it's wrong here
AWS Budgets allows you to set spending thresholds and receive alerts or take actions when costs exceed a budget. It does not provide a cost estimation interface for new resources.
When this WOULD be correct
A solutions architect needs to set a monthly cost threshold for a new deployment and receive notifications if costs exceed that limit; AWS Budgets would be the correct tool to configure those alerts.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The CLF-C02 exam frequently reuses these exact scenarios with slightly different constraints.
✓AWS Pricing CalculatorCorrect answer▾
Why this is correct
The AWS Pricing Calculator is the correct tool. It enables you to estimate AWS service costs before deployment, supporting various services, configurations, regions, and purchasing options (On-Demand, Reserved, Savings Plans).
✗AWS Total Cost of Ownership (TCO) CalculatorWrong answer — click to see why▾
Why this is wrong here
The TCO Calculator compares on-premises vs. AWS costs, not estimating monthly costs for a new AWS-only workload with different purchasing options.
★ When this WOULD be the correct answer
A question asking to compare the total cost of ownership between running a workload on-premises versus migrating it to AWS, including hardware, software, labor, and facilities costs.
Why candidates choose this
Candidates may confuse 'cost estimation' with 'total cost of ownership' and think TCO Calculator can estimate AWS service costs, but it's designed for migration comparisons.
✗AWS Cost ExplorerWrong answer — click to see why▾
Why this is wrong here
AWS Cost Explorer is used for analyzing historical costs and usage, not for creating upfront cost estimates for new workloads with different purchasing options.
★ When this WOULD be the correct answer
A solutions architect needs to review the cost trends of existing EC2 instances over the past 6 months to identify underutilized resources. AWS Cost Explorer would be the correct tool for this historical analysis.
Why candidates choose this
Candidates may confuse Cost Explorer's cost analysis capabilities with cost estimation, assuming it can also forecast future costs for new deployments.
✗AWS BudgetsWrong answer — click to see why▾
Why this is wrong here
AWS Budgets is used to set spending limits and receive alerts, not to create cost estimates for specific resource configurations.
★ When this WOULD be the correct answer
A solutions architect needs to set a monthly cost threshold for a new deployment and receive notifications if costs exceed that limit; AWS Budgets would be the correct tool to configure those alerts.
Why candidates choose this
Candidates may confuse cost estimation with cost monitoring, thinking Budgets can provide upfront pricing estimates because it deals with cost tracking.
Analysis generated from the official CLF-C02blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the AWS Pricing Calculator (for future estimates) with AWS Cost Explorer (for past analysis) or the TCO Calculator (for on-premises comparison), leading them to select a tool that cannot generate a forward-looking cost estimate for a planned workload.
Detailed technical explanation
How to think about this question
The AWS Pricing Calculator uses real-time pricing data from the AWS Price List API and applies discounts for Reserved Instances (e.g., 1-year All Upfront) and Compute Savings Plans based on commitment level and payment option. It also accounts for regional pricing variations, data transfer costs, and additional charges like EBS volumes or RDS storage, providing a granular breakdown that includes upfront and recurring monthly costs.
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 Pricing Calculator — The AWS Pricing Calculator (formerly Simple Monthly Calculator) is the correct tool for estimating monthly costs for specific AWS resources like EC2 instances, ALB, and RDS under different purchasing options (On-Demand, Reserved Instances, Savings Plans). It allows you to input exact instance types, quantities, and commitment terms to generate a detailed cost estimate for the first year.
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.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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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