AWS Certified Cloud Practitioner — Question 693

A company has deployed an application in the AWS Cloud. The company wants to ensure that the application is highly resilient.

Which component of AWS infrastructure can the company use to meet this requirement?

Answer options

• A. Content delivery network (CDN)
• B. Edge locations
• C. Wavelength Zones
• D. Availability Zones

Correct answer: D

Explanation

AWS Availability Zones are physically distinct locations within an AWS Region designed to be isolated from failures in other zones. Deploying applications across multiple Availability Zones ensures high resiliency and fault tolerance. In contrast, Edge locations, CDNs, and Wavelength Zones focus primarily on reducing latency and delivering content closer to end-users rather than providing application-level redundancy.