- A
AWS Regions
Why wrong: An AWS Region is a geographic area that contains multiple Availability Zones. Deploying across Regions is used for geographic redundancy and disaster recovery across large distances, not for protecting against a single data center failure within the same Region. The scenario specifically describes multiple facilities within the same Region.
- B
Availability Zones
Availability Zones are physically separate and isolated data centers within an AWS Region. Each has independent power, cooling, and physical security. By deploying across multiple Availability Zones, the application can survive the failure of one data center, meeting the requirement for high availability within the same Region.
- C
Edge Locations
Why wrong: Edge Locations are sites used by AWS services like Amazon CloudFront to cache content closer to end-users. They are not designed to run general-purpose compute workloads like a web application, nor do they provide the independent infrastructure needed for fault tolerance across data centers.
- D
Local Zones
Why wrong: Local Zones are extensions of an AWS Region that place compute, storage, and database services closer to large population centers for low-latency access. While they provide additional capacity, they are not primarily designed to offer multiple physically independent facilities within a single Region for fault tolerance against a data center failure.
Availability Zones for High Availability
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 runs a customer-facing web application on AWS. To ensure the application remains available if a fire or flood destroys one of the company's data centers, the IT team deploys the application across multiple physically separate facilities within the same AWS Region. Each facility has independent power, cooling, and physical security. Which component of the AWS global infrastructure does this deployment strategy primarily use?
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 Zones
Availability Zones are distinct, physically separated locations within an AWS Region, each with independent power, cooling, and physical security. Deploying across multiple Availability Zones protects against data center-level failures like fires or floods, ensuring high availability for the application.
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 Regions
Why it's wrong here
An AWS Region is a geographic area that contains multiple Availability Zones. Deploying across Regions is used for geographic redundancy and disaster recovery across large distances, not for protecting against a single data center failure within the same Region. The scenario specifically describes multiple facilities within the same Region.
When this WOULD be correct
A question asks: 'A company needs to comply with data residency requirements by keeping all data within a specific geographic area. Which AWS global infrastructure component should they use?' In that case, selecting an AWS Region ensures data remains within that geographic boundary.
- ✓
Availability Zones
Why this is correct
Availability Zones are physically separate and isolated data centers within an AWS Region. Each has independent power, cooling, and physical security. By deploying across multiple Availability Zones, the application can survive the failure of one data center, meeting the requirement for high availability within the same Region.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Edge Locations
Why it's wrong here
Edge Locations are sites used by AWS services like Amazon CloudFront to cache content closer to end-users. They are not designed to run general-purpose compute workloads like a web application, nor do they provide the independent infrastructure needed for fault tolerance across data centers.
When this WOULD be correct
A company wants to reduce latency for global users by caching static content closer to them. Which AWS component should they use?
- ✗
Local Zones
Why it's wrong here
Local Zones are extensions of an AWS Region that place compute, storage, and database services closer to large population centers for low-latency access. While they provide additional capacity, they are not primarily designed to offer multiple physically independent facilities within a single Region for fault tolerance against a data center failure.
When this WOULD be correct
A company needs to run a latency-sensitive application (e.g., real-time gaming or live streaming) for users in a specific metropolitan area, and the nearest AWS Region is too far. Deploying in a Local Zone reduces latency to single-digit milliseconds.
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.
✓Availability ZonesCorrect answer▾
Why this is correct
Availability Zones are physically separate and isolated data centers within an AWS Region. Each has independent power, cooling, and physical security. By deploying across multiple Availability Zones, the application can survive the failure of one data center, meeting the requirement for high availability within the same Region.
✗AWS RegionsWrong answer — click to see why▾
Why this is wrong here
AWS Regions are large geographic areas containing multiple, isolated Availability Zones. Deploying across physically separate facilities within the same Region uses Availability Zones, not Regions, because Regions themselves are not single facilities.
★ When this WOULD be the correct answer
A question asks: 'A company needs to comply with data residency requirements by keeping all data within a specific geographic area. Which AWS global infrastructure component should they use?' In that case, selecting an AWS Region ensures data remains within that geographic boundary.
Why candidates choose this
Candidates may confuse 'physically separate facilities' with 'Regions' because Regions are the broadest geographic division, and they might think deploying across facilities means using different Regions.
✗Edge LocationsWrong answer — click to see why▾
Why this is wrong here
Edge Locations are used for content caching and acceleration via CloudFront, not for deploying applications across physically separate facilities with independent power and cooling within a single AWS Region.
★ When this WOULD be the correct answer
A company wants to reduce latency for global users by caching static content closer to them. Which AWS component should they use?
Why candidates choose this
Candidates may confuse Edge Locations with Availability Zones because both involve distributed infrastructure, but Edge Locations are for content delivery, not for hosting application instances with high availability.
✗Local ZonesWrong answer — click to see why▾
Why this is wrong here
Local Zones are used for low-latency applications near specific geographic areas, not for high availability across physically separate facilities within a Region. The question describes multiple facilities with independent power and cooling within one Region, which is the definition of Availability Zones.
★ When this WOULD be the correct answer
A company needs to run a latency-sensitive application (e.g., real-time gaming or live streaming) for users in a specific metropolitan area, and the nearest AWS Region is too far. Deploying in a Local Zone reduces latency to single-digit milliseconds.
Why candidates choose this
Candidates may confuse Local Zones with Availability Zones because both involve geographically distributed infrastructure, but Local Zones are extensions of a Region for edge computing, not for high availability across multiple data centers within a Region.
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 confusing Availability Zones with AWS Regions, as candidates often think 'physically separate facilities' must mean different Regions, but the question explicitly states 'within the same AWS Region,' which directly points to Availability Zones.
Trap categories for this question
Scenario analysis trap
An AWS Region is a geographic area that contains multiple Availability Zones. Deploying across Regions is used for geographic redundancy and disaster recovery across large distances, not for protecting against a single data center failure within the same Region. The scenario specifically describes multiple facilities within the same Region.
Detailed technical explanation
How to think about this question
Each Availability Zone consists of one or more discrete data centers with redundant power, networking, and connectivity, and they are interconnected with high-bandwidth, low-latency fiber links. This architecture enables synchronous replication (e.g., Amazon RDS Multi-AZ) and active-active load balancing (e.g., Elastic Load Balancing across subnets in different AZs) without cross-Region latency penalties. A common real-world scenario is running an Auto Scaling group across three AZs to survive two simultaneous AZ failures.
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.
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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 Zones — Availability Zones are distinct, physically separated locations within an AWS Region, each with independent power, cooling, and physical security. Deploying across multiple Availability Zones protects against data center-level failures like fires or floods, ensuring high availability for the application.
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 →
Same concept, more angles
2 more ways this is tested on CLF-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company is designing a highly available web application on AWS. The application must remain available and continue serving traffic even if an entire physical data center experiences a complete outage. Which AWS global infrastructure component should the solutions architect use to meet this requirement?
medium- A.Deploy the application across multiple AWS Regions.
- ✓ B.Deploy the application across multiple Availability Zones within a single AWS Region.
- C.Deploy the application to an AWS Local Zone.
- D.Use an AWS Edge Location to cache the application's content.
Why B: Option B is correct because deploying across multiple Availability Zones (AZs) within a single AWS Region protects against the failure of an entire physical data center. Each AZ is a distinct, isolated location with independent power, cooling, and networking, so if one AZ goes down, the application continues serving traffic from the other AZs. This design meets the requirement for high availability without the complexity and cost of multi-Region deployment.
Variation 2. A company runs a critical e-commerce application in a single AWS Region. The architecture team wants to ensure the application remains available even if an entire data center fails. They plan to deploy the application across multiple physically separate and independent locations within that Region. Which component of the AWS global infrastructure should the team use to achieve this goal?
medium- ✓ A.Availability Zones
- B.Edge Locations
- C.AWS Local Zones
- D.AWS Regions
Why A: Availability Zones (AZs) are physically separate and independent data centers within an AWS Region, each with isolated power, cooling, and networking. By deploying the application across multiple AZs, the architecture ensures that if one entire data center fails, the application continues to run in the other AZs, meeting the goal of high availability within a single Region.
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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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