- A
AWS Region
Why wrong: An AWS Region is a large geographic area that contains multiple, isolated Availability Zones. While deploying across Regions can provide even higher resilience, the requirement is specifically to distribute within the same Region across independent data centers. Using multiple Regions would introduce higher latency and complexity that are not needed for this scenario.
- B
Availability Zone
Availability Zones are isolated locations within an AWS Region, each with independent power, cooling, and networking. By deploying across multiple Availability Zones, the application can survive a single data center failure, achieving high availability and fault tolerance within the same Region.
- C
Edge Location
Why wrong: Edge Locations are used primarily for content delivery and caching through services like Amazon CloudFront. They are not designed to host application compute resources and do not provide the independent infrastructure needed for high availability of the application itself.
- D
Local Zone
Why wrong: AWS Local Zones extend Regions closer to end users for ultra-low latency applications. They are not the primary component for achieving high availability across independent data centers within a Region; Availability Zones are the correct building block for that purpose.
CLF-C02 Cloud Concepts Practice Question
This CLF-C02 practice question tests your understanding of cloud concepts. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 designing a highly available application that must remain operational even if a single physical data center fails. The application will be deployed in the us-east-1 Region. The company wants to distribute the application across multiple physical locations within the Region, where each location has independent power, cooling, and networking. Which AWS Global Infrastructure component should the company use to meet this requirement?
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
Availability Zone
Availability Zones (AZs) are distinct physical locations within an AWS Region, each with independent power, cooling, and networking, and are interconnected through low-latency links. By deploying the application across multiple AZs, the company ensures high availability and fault tolerance against the failure of a single physical data center. This directly meets the requirement to remain operational even if one physical data center fails.
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 Region
Why it's wrong here
An AWS Region is a large geographic area that contains multiple, isolated Availability Zones. While deploying across Regions can provide even higher resilience, the requirement is specifically to distribute within the same Region across independent data centers. Using multiple Regions would introduce higher latency and complexity that are not needed for this scenario.
- ✓
Availability Zone
Why this is correct
Availability Zones are isolated locations within an AWS Region, each with independent power, cooling, and networking. By deploying across multiple Availability Zones, the application can survive a single data center failure, achieving high availability and fault tolerance within the same Region.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Edge Location
Why it's wrong here
Edge Locations are used primarily for content delivery and caching through services like Amazon CloudFront. They are not designed to host application compute resources and do not provide the independent infrastructure needed for high availability of the application itself.
- ✗
Local Zone
Why it's wrong here
AWS Local Zones extend Regions closer to end users for ultra-low latency applications. They are not the primary component for achieving high availability across independent data centers within a Region; Availability Zones are the correct building block for that purpose.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse an AWS Region (a broad geographic area) with an Availability Zone (the actual isolated data center within that Region), leading them to select 'AWS Region' thinking it provides the required physical separation.
Trap categories for this question
Scenario analysis trap
An AWS Region is a large geographic area that contains multiple, isolated Availability Zones. While deploying across Regions can provide even higher resilience, the requirement is specifically to distribute within the same Region across independent data centers. Using multiple Regions would introduce higher latency and complexity that are not needed for this scenario.
Detailed technical explanation
How to think about this question
Each Availability Zone is essentially one or more discrete data centers with redundant power, networking, and connectivity, and they are physically separated by miles to mitigate correlated failures. AWS uses a 1-ms round-trip latency target between AZs in the same Region to enable synchronous replication patterns like Multi-AZ RDS or Aurora. In practice, designing for Multi-AZ deployment often involves using Elastic Load Balancing across AZs and Auto Scaling groups configured for each AZ to survive a complete AZ outage.
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.
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?
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: Availability Zone — Availability Zones (AZs) are distinct physical locations within an AWS Region, each with independent power, cooling, and networking, and are interconnected through low-latency links. By deploying the application across multiple AZs, the company ensures high availability and fault tolerance against the failure of a single physical data center. This directly meets the requirement to remain operational even if one physical data center fails.
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
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 →
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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