CLF-C02 Billing, Pricing, and Support Practice Question
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?
⚠ Common exam trap
Many candidates confuse 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.
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.
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.
When this WOULD be correct
A company already running AWS workloads wants to visualize and analyze their historical spending patterns, identify cost trends, or forecast future costs based on past usage.
- ✗
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.
When this WOULD be correct
A company currently running on-premises servers wants to compare the total cost of ownership (including hardware, software, labor, and facilities) versus migrating those workloads to AWS. The TCO Calculator would be used to estimate potential savings.
- ✗
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.
When this WOULD be correct
A company wants to set a monthly spending limit for an existing AWS account and receive alerts when costs exceed a threshold, such as 80% of the budget.
- ✓
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.
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 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.
✗AWS Cost ExplorerWrong answer — click to see why▾
Why this is wrong here
AWS Cost Explorer analyzes existing costs and usage, but cannot generate cost estimates for planned architectures before deployment.
★ When this WOULD be the correct answer
A company already running AWS workloads wants to visualize and analyze their historical spending patterns, identify cost trends, or forecast future costs based on past usage.
Why candidates choose this
Candidates may confuse Cost Explorer's cost analysis capabilities with the ability to create upfront estimates for new architectures.
✗AWS Total Cost of Ownership (TCO) CalculatorWrong answer — click to see why▾
Why this is wrong here
The AWS TCO Calculator compares on-premises costs with AWS, not for estimating costs of a new cloud-native application across instance types, regions, and pricing models.
★ When this WOULD be the correct answer
A company currently running on-premises servers wants to compare the total cost of ownership (including hardware, software, labor, and facilities) versus migrating those workloads to AWS. The TCO Calculator would be used to estimate potential savings.
Why candidates choose this
Candidates may confuse 'total cost of ownership' with 'cost estimation' and think the TCO Calculator can provide detailed pricing for AWS services, but it is designed for migration comparisons, not new cloud architecture estimates.
✗AWS BudgetsWrong answer — click to see why▾
Why this is wrong here
AWS Budgets is used to set cost alerts and monitor spending against budgets, not to create upfront cost estimates for planned architectures.
★ When this WOULD be the correct answer
A company wants to set a monthly spending limit for an existing AWS account and receive alerts when costs exceed a threshold, such as 80% of the budget.
Why candidates choose this
Candidates may confuse cost estimation with cost monitoring, assuming Budgets can also estimate future costs because it deals with cost management.
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?”
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 |
Go deeper
Related to this question
About these practice questions
Courseiva writes every CLF-C02 question from scratch — 988 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.