CLF-C02 Question 152
Single answerA company is designing a global application and needs to understand the relationships among AWS Regions, Availability Zones, and edge locations. Which of the following statements is correct regarding the roles of these components in AWS's global infrastructure?
- A
AWS Regions consist of multiple Availability Zones to provide high availability and fault tolerance.
- B
Edge locations are part of Availability Zones and are used for running compute resources like Amazon EC2 instances.
- C
Availability Zones are isolated geographical locations and do not belong to any specific AWS Region.
- D
AWS Regions are used solely for distributing content to users via services like Amazon CloudFront.
Show answer and explanation
Correct answer: A
Explanation
AWS's global infrastructure is composed of Regions, Availability Zones, and edge locations, each serving different purposes. Regions are geographically distinct areas that contain multiple Availability Zones to ensure high availability. Availability Zones are isolated locations within a Region, while edge locations are used for caching content and reducing latency for end users.
- A. Correct.
Correct. AWS Regions consist of multiple Availability Zones, which are designed to provide high availability and fault tolerance by having independent power, cooling, and networking.
- B. Incorrect.
Incorrect. Edge locations are not part of Availability Zones but are used to cache content and provide low-latency access to services like Amazon CloudFront.
- C. Incorrect.
Incorrect. Availability Zones are isolated data centers within a specific AWS Region, not standalone geographical locations.
- D. Incorrect.
Incorrect. AWS Regions are not solely for content delivery; they host a wide range of AWS services and resources.