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 175 discussion

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

Question #: 175
Topic #: 1

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

A company is running a three-tier web application to process credit card payments. The front-end user interface consists of static webpages. The application tier can have long-running processes. The database tier uses MySQL.
The application is currently running on a single, general purpose large Amazon EC2 instance. A solutions architect needs to decouple the services to make the web application highly available.
Which solution would provide the HIGHEST availability?

A. Move static assets to Amazon CloudFront. Leave the application in EC2 in an Auto Scaling group. Move the database to Amazon RDS to deploy Multi-AZ.
B. Move static assets and the application into a medium EC2 instance. Leave the database on the large instance. Place both instances in an Auto Scaling group.
C. Move static assets to Amazon S3. Move the application to AWS Lambda with the concurrency limit set. Move the database to Amazon DynamoDB with on- demand enabled.
D. Move static assets to Amazon S3. Move the application to Amazon Elastic Container Service (Amazon ECS) containers with Auto Scaling enabled. Move the database to Amazon RDS to deploy Multi-AZ.

Show Suggested Answer

Suggested Answer: D 🗳️

by MikeHugeNerd at Aug. 30, 2020, 1:54 a.m.

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Comments

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Prabudas

Highly Voted 3 years, 8 months ago

D provides most high availability out of given options

upvoted 76 times

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Gordiii

Highly Voted 3 years, 8 months ago

D - Static assets to S3; ECS Autho Scaling; RDS Multi-AZ --> HA.

upvoted 45 times

gargaditya

3 years, 6 months ago

And C is eliminated because of the keyword 'lengthy procedures'. Lambda has max limit of 15 minutes. Concurrency limit only helps with no of parallel executions ,not duration.

upvoted 11 times

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orbpig

Most Recent 2 years, 7 months ago

Move static assets to Amazon CloudFront is not right, changing to : "move static assets to S3 and configure an Amazon CloudFront distribution with the S3 bucket as the origin" would be right.

upvoted 2 times

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mstf

2 years, 8 months ago

Selected Answer: D

I vote D

upvoted 1 times

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jopeg

2 years, 9 months ago

Selected Answer: D

I vote D

upvoted 1 times

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Angrydove

2 years, 12 months ago

the Answer is C ECS has two types auto scaling. Cluster auto scaling : scaling in/out work nodes(EC2) Service auto scaling : scaling in/out containers(pod) D:"containers with Auto Scaling enabled" means Service auto scaling. so the ECS model can't scale out EC2 instances. It's not avaliable. It must've added Fargate or Cluster auto scaling option.

upvoted 1 times

cloudkarthik

2 years, 11 months ago

But in the question it clearly mentioned "lengthy procedure". So we cant choose C, as Lambda times out after 15 minutes.

upvoted 3 times

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PrinceMughal

3 years, 4 months ago

Selected Answer: D

D fits the best among given options.

upvoted 2 times

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tototo

3 years, 5 months ago

Selected Answer: D

i'll go for D

upvoted 2 times

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Sharan_25_v

3 years, 5 months ago

Selected Answer: D

Static content => always S3

upvoted 2 times

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Lucky_

3 years, 7 months ago

D for sure. ECS can automatically start up EC2 instances and host a copy of your web app on each of them. ECS also monitors EC2 instances and spin up new ones if any of them go down.

upvoted 6 times

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rlarkdms

3 years, 7 months ago

why not A?

upvoted 4 times

SYfdBV7WyhnBT

3 years, 6 months ago

It's not A because the question did not mention or imply the website needed to be accessed globally. S3 will do fine in this situation.

upvoted 2 times

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muhsin

3 years, 5 months ago

Because first you need to move data to S3 and then configure the cloudfront

upvoted 3 times

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JayBro2

3 years, 7 months ago

Gordiii covers the bases.-Answer is D

upvoted 2 times

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sanjithragulv

3 years, 7 months ago

D - use ECS for long running processes

upvoted 5 times

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enurupu

3 years, 7 months ago

I'm wondering why C is not highly available over D.

upvoted 2 times

GBAU

3 years ago

I eliminated C as an option as concurrency limits (defined as set in this option) reduce potential availability and the question specifies the decision is all about highest availability.

upvoted 1 times

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grolo323

3 years, 7 months ago

I think the key word here is long-running process. As it is known, Lambda has a limited time of execution. It will be D in that way.

upvoted 3 times

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EricGuo

3 years, 7 months ago

DynamoDB is non-sql DB. MySql db is mentioned in the question.

upvoted 6 times

Always_Wanting_Stuff

3 years, 7 months ago

NoSQL stands for "Not Only SQL". In some cases SQL can be supported by these databases. The key point in the question is to provide the highest availability. Option C would not provide this, option D would.

upvoted 1 times

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