- A
Provisioning maximum instance sizes to ensure peak performance at all times
Why wrong: Over-provisioning wastes energy on idle capacity — sustainability requires right-sizing to match actual demand.
- B
Running workloads 24/7 even when not needed to maintain warm state
Why wrong: Always-on resources that aren't needed consume unnecessary energy — sustainability practices recommend turning off unused resources.
- C
Right-sizing instances and using managed services to maximize resource utilization
Right-sizing reduces wasted capacity and energy, while managed services share infrastructure across many customers at higher utilization rates than dedicated servers — both reduce environmental impact.
- D
Replicating all data to multiple regions for maximum redundancy
Why wrong: Unnecessary replication increases energy consumption and data transfer — sustainability requires balancing redundancy needs against environmental impact.
CLF-C02 Cloud Concepts Practice Question
This CLF-C02 practice question tests your understanding of cloud concepts. 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 company is evaluating the AWS Sustainability pillar in the Well-Architected Framework. Which action aligns with AWS cloud sustainability best practices?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Right-sizing instances and using managed services to maximize resource utilization
Option C is correct because right-sizing instances and using managed services directly aligns with the AWS Sustainability pillar, which focuses on minimizing the environmental impact of cloud workloads. By matching instance capacity to actual demand and leveraging services like AWS Lambda or Amazon RDS, you reduce wasted compute cycles and energy consumption, improving resource utilization and lowering carbon footprint.
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.
- ✗
Provisioning maximum instance sizes to ensure peak performance at all times
Why it's wrong here
Over-provisioning wastes energy on idle capacity — sustainability requires right-sizing to match actual demand.
- ✗
Running workloads 24/7 even when not needed to maintain warm state
Why it's wrong here
Always-on resources that aren't needed consume unnecessary energy — sustainability practices recommend turning off unused resources.
- ✓
Right-sizing instances and using managed services to maximize resource utilization
Why this is correct
Right-sizing reduces wasted capacity and energy, while managed services share infrastructure across many customers at higher utilization rates than dedicated servers — both reduce environmental impact.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Replicating all data to multiple regions for maximum redundancy
Why it's wrong here
Unnecessary replication increases energy consumption and data transfer — sustainability requires balancing redundancy needs against environmental impact.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the Sustainability pillar with the Reliability pillar, assuming that maximizing redundancy or always-on resources is always beneficial, but the exam specifically tests that sustainability prioritizes minimizing resource consumption and waste.
Detailed technical explanation
How to think about this question
Under the hood, AWS data centers use power usage effectiveness (PUE) metrics to measure energy efficiency, and right-sizing reduces the number of active servers, directly lowering PUE. For example, using Amazon EC2 Auto Scaling with dynamic scaling policies ensures that instances only run when demand exists, and migrating to serverless services like AWS Lambda eliminates idle capacity entirely. In a real-world scenario, a company running a batch processing job that completes in 2 hours could save up to 92% of energy by using Spot Instances and shutting down resources afterward, compared to running a large instance 24/7.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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.
- →
Cloud Concepts — study guide chapter
Learn the concepts, then practise the questions
- →
Cloud Concepts practice questions
Targeted practice on this topic area only
- →
All CLF-C02 questions
1,024 questions across all exam domains
- →
AWS Certified Cloud Practitioner CLF-C02 study guide
Full concept coverage aligned to exam objectives
- →
CLF-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related CLF-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Cloud Concepts practice questions
Practise CLF-C02 questions linked to Cloud Concepts.
Security and Compliance practice questions
Practise CLF-C02 questions linked to Security and Compliance.
Cloud Technology and Services practice questions
Practise CLF-C02 questions linked to Cloud Technology and Services.
Billing, Pricing, and Support practice questions
Practise CLF-C02 questions linked to Billing, Pricing, and Support.
AWS shared responsibility model practice questions
Practise CLF-C02 questions linked to AWS shared responsibility model.
AWS IAM practice questions
Practise CLF-C02 questions linked to AWS IAM.
AWS pricing practice questions
Practise CLF-C02 questions linked to AWS pricing.
AWS support plans practice questions
Practise CLF-C02 questions linked to AWS support plans.
AWS S3 practice questions
Practise CLF-C02 questions linked to AWS S3.
AWS EC2 practice questions
Practise CLF-C02 questions linked to AWS EC2.
Practice this exam
Start a free CLF-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Concepts — This question tests Cloud Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Right-sizing instances and using managed services to maximize resource utilization — Option C is correct because right-sizing instances and using managed services directly aligns with the AWS Sustainability pillar, which focuses on minimizing the environmental impact of cloud workloads. By matching instance capacity to actual demand and leveraging services like AWS Lambda or Amazon RDS, you reduce wasted compute cycles and energy consumption, improving resource utilization and lowering carbon footprint.
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: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More CLF-C02 practice questions
- A company publishes a message each time a new product is added to its catalogue. Three services need to receive this mes…
- A media company stores frequently accessed video thumbnails in Amazon S3. The thumbnails are read multiple times every d…
- A company needs a service to translate domain names (like www.example.com) into IP addresses, check the health of their…
- A startup runs an application on AWS and receives a monthly bill that charges exactly for the number of compute hours us…
- A financial institution runs its core banking application on-premises due to regulatory requirements. It has connected i…
- A company wants to run a MySQL database in AWS without managing database software installation, applying patches, settin…
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.