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Route 53 Quiz

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You currently have an EC2 instance hosting a web application. The number of users is expected to increase in the coming months and hence, you need to add more elasticity to your setup. Which of the following methods can help add elasticity to your existing setup? Choose 2 answers from the options given below.

A. Set up your web app on more EC2 instances and set them behind an Elastic Load Balancer.

B. Set up an ElastiCache in front of the EC2 instance.

C. Set up your web app on more EC2 instances and use Route 53 to route requestsaccordingly.

D. Set up DynamoDB behind your EC2 Instances.

A. & C.
The Elastic Load Balancer can be used to distribute traffic to EC2 Instances. So, to add elasticity to your setup, one can either do this, or even use Route 53. In Route 53, you can setup weighted routing policies to distribute requests to multiple EC2 Instances.
For more information on architecting for the cloud, please visit the following URL:
https://aws.amazon.com/whitepapers/architecting-for-the-aws-cloud-best-practices/
Note:
Option B can’t be the correct answer to this question.
The reason is here, Amazon ElastiCache improves application performance by storing critical pieces of data in memory for fast access. You can use this caching to significantly improve latency and throughput for manyread-heavyapplication workloads. so, will not help in elasticity
And option D will not help in elasticity for your application.
Hence, the correct answer is optionA and C.

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