Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A small e-commerce company currently hosts its website on a single physical server in a colocation facility. The company pays a fixed monthly fee for the server, power, and bandwidth, regardless of actual usage. The CTO is evaluating AWS and notes that AWS operates millions of servers across multiple data centers, allowing it to negotiate lower prices for hardware and pass those savings to customers. The CTO expects that migrating to AWS will reduce the company's per-unit costs. Which benefit of cloud computing does this scenario BEST describe?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
High availability
High availability refers to systems that are designed to remain operational even when individual components fail, typically through redundancy across multiple Availability Zones. While AWS offers high availability, the scenario specifically highlights cost advantages from large-scale purchasing, not system uptime.
B
Distractor review
Elasticity
Elasticity is the ability to automatically scale resources up or down based on demand. Although AWS provides elasticity, the scenario focuses on the cost reduction arising from AWS's large-scale operations, not on the ability to adjust resource capacity dynamically.
C
Best answer
Economy of scale
Economy of scale is the correct answer. The scenario explicitly describes how AWS's massive infrastructure footprint enables lower per-unit costs that are passed to customers. This is a core benefit of cloud computing: customers benefit from the provider's ability to achieve cost efficiencies that are impossible for a single organization to match.
D
Distractor review
Fault tolerance
Fault tolerance is the ability of a system to continue operating without interruption when one or more components fail. While AWS provides fault-tolerant services, the scenario does not discuss system resilience or failure handling; it centers on cost advantages from scale.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer needs to launch a test server for a new application prototype. The developer logs into the AWS Management Console, selects an Amazon EC2 instance type, configures the security group, and starts the instance. The instance is running within two minutes, and the developer did not need to submit a formal request to the company's IT procurement team or wait for approval from a cloud administrator. Which essential characteristic of cloud computing does this scenario best demonstrate?
Question 2
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?
Question 3
A company's development team frequently needs temporary test environments. A developer can log into the AWS Management Console, select an Amazon EC2 instance type, configure storage, and launch the instance within minutes without any interaction with the IT infrastructure team. This capability is an example of which essential characteristic of cloud computing?
Question 4
A company's finance team needs to analyze AWS spending in detail. They require a report that includes hourly cost data for each AWS service, each individual resource (e.g., a specific EC2 instance), and any cost allocation tags applied. The team plans to export this data to an Amazon S3 bucket and then import it into a custom business intelligence (BI) analytics dashboard. Which AWS tool should the finance team use to generate this level of detailed cost data?
Question 5
A company uses AWS for its development environment. The finance team wants to set a monthly budget of $10,000. They want to receive an email notification when the actual costs reach 80% of the budget ($8,000) and again when costs exceed the budget. The team needs a managed AWS service that can automatically send these alerts without requiring custom code or third-party tools. Which AWS service should the team use?
Question 6
A company uses AWS Organizations to manage multiple accounts. The security team needs to enforce a policy that restricts SSH access (port 22) from the internet (0.0.0.0/0) in all VPCs across all accounts. The team wants to centrally define the allowed rules and automatically apply them to newly created VPCs and security groups, while also automatically remediating any existing non-compliant security groups. Which AWS service should the team use?
FAQ
Questions learners often ask
What does this CLF-C02 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Economy of scale — The scenario describes how AWS can offer lower pay-as-you-go prices because of its massive scale of operations. This is known as the economy of scale benefit of cloud computing. Cloud providers like AWS purchase hardware, bandwidth, and other resources in enormous quantities, which allows them to achieve significant cost savings that are passed on to customers in the form of lower variable prices. This is a fundamental advantage over running on-premises infrastructure where a single small company cannot achieve similar purchasing power.
What should I do if I get this CLF-C02 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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