CLF-C02 Cloud Concepts Practice Question
A company runs an e-commerce platform on Amazon EC2 instances in a single AWS Region. The company wants to ensure that the platform remains available even if a natural disaster disrupts the entire geographic area of that Region. Which approach should the company take to meet this requirement?
⚠ Common exam trap
A common mix-up: candidates confuse high availability within a Region (using multiple AZs) with disaster recovery across Regions, mistakenly thinking that AZ-level redundancy is sufficient to withstand a full Regional outage.
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
✓
Deploy the application across multiple AWS Regions.
Deploying the application across multiple AWS Regions ensures fault tolerance and disaster recovery even if an entire geographic area is disrupted. A natural disaster affecting a single Region would impact all Availability Zones within that Region, so multi-Region deployment is the only approach that provides geographic isolation and continuous availability.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Deploy the application across multiple Availability Zones within the same Region.
Why it's wrong here
Multiple Availability Zones provide high availability and fault tolerance within a single Region by distributing instances across isolated data centers. However, they do not protect against a disaster that takes down the entire Region, which is a geographic area consisting of multiple AZs.
When this WOULD be correct
If the requirement were to ensure high availability against a single-AZ failure (e.g., an AZ-specific power outage) while minimizing latency and cost, deploying across multiple AZs within the same Region would be the correct approach.
- ✗
Deploy the application across multiple Edge Locations of Amazon CloudFront.
Why it's wrong here
Edge Locations are part of the CloudFront content delivery network and are used to cache content closer to users. They do not run compute resources like EC2 instances and are not designed for hosting applications or providing disaster recovery.
When this WOULD be correct
A company wants to reduce latency for global users by caching static content closer to them, and requires high availability for that cached content even if a regional CloudFront origin fails.
- ✓
Deploy the application across multiple AWS Regions.
Why this is correct
Deploying across multiple AWS Regions is the correct approach for geographic disaster recovery. Each Region is completely independent, with separate power, cooling, and physical infrastructure. If one Region is affected by a disaster, the application can fail over to another Region, ensuring business continuity.
- ✗
Deploy the application on a larger instance type within the same Availability Zone.
Why it's wrong here
Using a larger instance type provides more compute capacity but does not introduce any redundancy. All instances remain in the same single Availability Zone, which is a single point of failure. This approach does not protect against even a local data center failure, let alone a regional disaster.
When this WOULD be correct
This option would be correct if the requirement was to improve performance or handle increased load for a single-instance application without changing architecture, such as scaling vertically to meet higher demand.
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.
✓Deploy the application across multiple AWS Regions.Correct answer▾
Why this is correct
Deploying across multiple AWS Regions is the correct approach for geographic disaster recovery. Each Region is completely independent, with separate power, cooling, and physical infrastructure. If one Region is affected by a disaster, the application can fail over to another Region, ensuring business continuity.
✗Deploy the application across multiple Availability Zones within the same Region.Wrong answer — click to see why▾
Why this is wrong here
Deploying across multiple Availability Zones protects against failures within a single AZ, but not against a natural disaster that disrupts the entire geographic area of a Region, as all AZs in a Region are within the same geographic area.
★ When this WOULD be the correct answer
If the requirement were to ensure high availability against a single-AZ failure (e.g., an AZ-specific power outage) while minimizing latency and cost, deploying across multiple AZs within the same Region would be the correct approach.
Why candidates choose this
Candidates often confuse high availability within a Region (using multiple AZs) with disaster recovery across Regions, and may think that AZs are geographically dispersed enough to withstand region-wide disasters.
✗Deploy the application across multiple Edge Locations of Amazon CloudFront.Wrong answer — click to see why▾
Why this is wrong here
Edge Locations are used for content caching and acceleration via CloudFront, not for running application instances. They cannot provide compute capacity to replace EC2 instances in a disaster scenario.
★ When this WOULD be the correct answer
A company wants to reduce latency for global users by caching static content closer to them, and requires high availability for that cached content even if a regional CloudFront origin fails.
Why candidates choose this
Candidates may confuse Edge Locations with AWS Regions or Availability Zones, thinking they provide compute redundancy, or overestimate CloudFront's capabilities for disaster recovery.
✗Deploy the application on a larger instance type within the same Availability Zone.Wrong answer — click to see why▾
Why this is wrong here
Deploying on a larger instance type within the same Availability Zone does not protect against a natural disaster that disrupts the entire geographic area of the Region, as the single Availability Zone is still within that Region.
★ When this WOULD be the correct answer
This option would be correct if the requirement was to improve performance or handle increased load for a single-instance application without changing architecture, such as scaling vertically to meet higher demand.
Why candidates choose this
Candidates may think that a larger instance provides more reliability or redundancy, confusing vertical scaling with high availability.
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?”
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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.