SAA-C03 Question 445
Select 2Your company is planning to deploy a highly available web application on AWS. The application must run in multiple locations to ensure low latency for global users and should remain operational even if an entire data center fails. Which AWS infrastructure components should you use to meet these requirements?
- A
Deploy the application across multiple Availability Zones within a single AWS Region
- B
Deploy the application across multiple AWS Regions
- C
Deploy the application in a single Availability Zone for cost efficiency
- D
Use Amazon CloudFront to cache content at edge locations
- E
Use a single AWS Region with a backup in an on-premises data center
Show answer and explanation
Correct answers: A, B
Explanation
To meet the requirements of high availability and low latency for global users, you need to deploy the application across multiple Availability Zones within a Region and across multiple AWS Regions. This architecture ensures resilience against both data center and regional failures while providing a better experience for users worldwide.
- A. Correct.
Deploying the application across multiple Availability Zones ensures high availability within a single AWS Region. If one Availability Zone fails, others will still be operational.
- B. Correct.
Deploying the application across multiple AWS Regions ensures global reach and provides disaster recovery capabilities in case an entire AWS Region fails.
- C. Incorrect.
Deploying the application in a single Availability Zone does not provide high availability. If the Availability Zone fails, the application will go down.
- D. Incorrect.
Using Amazon CloudFront improves performance by caching content at edge locations, but it does not directly address high availability for the web application itself.
- E. Incorrect.
Using a single AWS Region with an on-premises backup does not meet the requirement for global reach and high availability in case of a regional failure.