Exam AWS Certified Solutions Architect - Associate SAA-C02 All Questions

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Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 72 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02

Question #: 72
Topic #: 1

[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A company has a three-tier image-sharing application. It uses an Amazon EC2 instance for the front-end layer, another for the backend tier, and a third for the
MySQL database. A solutions architect has been tasked with designing a solution that is highly available, and requires the least amount of changes to the application
Which solution meets these requirements?

A. Use Amazon S3 to host the front-end layer and AWS Lambda functions for the backend layer. Move the database to an Amazon DynamoDB table and use Amazon S3 to store and serve users' images.
B. Use load-balanced Multi-AZ AWS Elastic Beanstalk environments for the front-end and backend layers. Move the database to an Amazon RDS instance with multiple read replicas to store and serve users' images.
C. Use Amazon S3 to host the front-end layer and a fleet of Amazon EC2 instances in an Auto Scaling group for the backend layer. Move the database to a memory optimized instance type to store and serve users' images.
D. Use load-balanced Multi-AZ AWS Elastic Beanstalk environments for the front-end and backend layers. Move the database to an Amazon RDS instance with a Multi-AZ deployment. Use Amazon S3 to store and serve users' images.

Show Suggested Answer

Suggested Answer: D 🗳️

by sai2 at July 6, 2020, 7:42 a.m.

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Comments

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GauravAWS

Highly Voted 3 years, 9 months ago

The keywords for this question is "highly available, and requires the least amount of changes to the application". Hence, for "Highly available": Multi-AZ & for "least amount of changes to the application": Elastic Beanstalk automatically handles the deployment, from capacity provisioning, load balancing, auto-scaling to application health monitoring

upvoted 77 times

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sai2

Highly Voted 3 years, 9 months ago

Correct Answer is D

upvoted 46 times

aguy9

3 years, 8 months ago

I think the answer is D because B doesn’t mention RDS multiAZ. D provides for greater availability

upvoted 4 times

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noahsark

3 years, 8 months ago

I think i agree with D: DynamoDB is wrong as question is MySQL database RDS instance with multiple read replicas is not HA Memory optimized instance is not HA

upvoted 7 times

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LEEOscar

Most Recent 1 year, 3 months ago

Highly available, need Multi-AZ,,

upvoted 1 times

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JoshuaAlkar

2 years, 2 months ago

Multi-AZ deployment is the same as standby replica, which is for high availability

upvoted 1 times

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FF11

3 years, 5 months ago

Selected Answer: D

D is correct

upvoted 1 times

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pikaflash

3 years, 6 months ago

Selected Answer: D

A solutions architect has been entrusted with the responsibility of developing a solution that is highly available and needs the fewest modifications to the application as possible.

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bill_smoke

3 years, 6 months ago

A + D Least amount of changes to application - Elastic Beanstalk SQL Database - RDS Highly Available - RDS Multi-AZ

upvoted 1 times

Cable01011000

3 years, 1 month ago

(•_•) It is D. Do you really consider migration from MySQL to dynamoDB as minimal effort (least amount of changes)?

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mynk29

3 years, 8 months ago

B is not highly available (read replicas) D will require re-engineering because of storing S3 fro code. D is lesser of evil.

upvoted 3 times

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jkwek

3 years, 8 months ago

https://aws.amazon.com/elasticbeanstalk/ read this u know

upvoted 2 times

Cable01011000

3 years, 1 month ago

Wow. Thanks. This was really helpfull. Here you can find link with all answers for all questions about AWS: https://docs.aws.amazon.com/ Thank me later \^o^/

upvoted 1 times

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jkwek

3 years, 8 months ago

D is correct because got multi AZ

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Flass

3 years, 8 months ago

By elimination... You don't serve images via a database but S3 and you don't replace MySQL by DynamoDB, so D.

upvoted 4 times

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syu31svc

3 years, 8 months ago

Correct answer is D as it provides high availability using multi-AZ load balancing for FE and BE, Multi-AZ RDS for database and S3 to store images.

upvoted 2 times

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KK_uniq

3 years, 8 months ago

No code change is a hint for PAAS and hence beanstalk. D is ok

upvoted 2 times

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mryala

3 years, 8 months ago

it's D

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Ankitrathi85

3 years, 8 months ago

D right

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NSF

3 years, 8 months ago

It seems that there is a tight race between B and D and the reason why I consider D is the right option is because we are talking about user images, which certainly involves storage. S3, in my opinion, is the right place for images.

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Martin_Do

3 years, 8 months ago

B is my answer. if the requirement does not contain "requires the least amount of changes to the application" then the answer is D, it does not want to make the system is more complex

upvoted 2 times

Lucky_

3 years, 8 months ago

In question it states "a solution that is highly available". B opts for multiple read replicas(which is for performance) and D for Multi-AZs(for high availability). Hence D is correct.

upvoted 1 times

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