CLF-C02 Question 150
Single answerA company is planning to deploy a global application that requires low latency for users worldwide. To achieve this, they need to understand the relationship between AWS Regions, Availability Zones (AZs), and edge locations. Which of the following statements correctly describes these relationships?
- A
Regions are physical locations worldwide, and each Region contains multiple Availability Zones, which are isolated data centers.
- B
Edge locations are part of Availability Zones and are used to distribute content within a Region.
- C
Availability Zones are global endpoints used to cache content closer to users.
- D
Regions are global points of presence used to deliver low-latency connectivity for content delivery.
Show answer and explanation
Correct answer: A
Explanation
To design a reliable and low-latency application, it is critical to understand the AWS global infrastructure. Regions are independent geographic locations, each containing multiple Availability Zones for fault tolerance. Edge locations, on the other hand, are part of the AWS content delivery network (CDN) and are used to cache content closer to users, ensuring low-latency content delivery.
- A. Correct.
Correct. Regions are geographically distinct physical locations. Each Region contains multiple Availability Zones, which are isolated data centers designed to provide fault tolerance and high availability.
- B. Incorrect.
Incorrect. Edge locations are separate from Availability Zones and are used for content delivery through services like Amazon CloudFront, not as part of AZs.
- C. Incorrect.
Incorrect. Availability Zones are not global endpoints; they are isolated data centers within a Region. Edge locations serve as caching endpoints for content delivery, not AZs.
- D. Incorrect.
Incorrect. Regions are not points of presence. Edge locations, rather than Regions, are used to deliver low-latency connectivity for content delivery.