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 215 discussion

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

Question #: 215
Topic #: 1

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

A company is hosting an election reporting website on AWS for users around the world. The website uses Amazon EC2 instances for the web and application tiers in an Auto Scaling group with Application Load Balancers. The database tier uses an Amazon RDS for MySQL database. The website is updated with election results once an hour and has historically observed hundreds of users accessing the reports.
The company is expecting a significant increase in demand because of upcoming elections in different countries. A solutions architect must improve the website's ability to handle additional demand while minimizing the need for additional EC2 instances.
Which solution will meet these requirements?

A. Launch an Amazon ElastiCache cluster to cache common database queries.
B. Launch an Amazon CloudFront web distribution to cache commonly requested website content.
C. Enable disk-based caching on the EC2 instances to cache commonly requested website content.
D. Deploy a reverse proxy into the design using an EC2 instance with caching enabled for commonly requested website content.

Show Suggested Answer

Suggested Answer: B 🗳️

by MikeHugeNerd at Aug. 30, 2020, 1:51 a.m.

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Comments

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MikeHugeNerd

Highly Voted 3 years, 8 months ago

B. looks good. The keyword is 'users around the world' = Cloudfront

upvoted 42 times

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anpt

Highly Voted 3 years, 7 months ago

BBBBBBBBBBBBBBBBBBBBBBBBBB

upvoted 10 times

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qax2022

Most Recent 2 years, 9 months ago

Selected Answer: B

b is right, but how and an election with "round the world", sound like a election fraud in the real world.

upvoted 3 times

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Heyang

2 years, 10 months ago

Selected Answer: D

Voted for D, Set reserve proxy add configuration with EC2 Instance. also can speeded to website access

upvoted 1 times

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slcheng

2 years, 10 months ago

Selected Answer: B

Vote for B

upvoted 1 times

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AhmedKhaled86

3 years, 3 months ago

Selected Answer: B

"while limiting the requirement for more EC2 instances" So no ELasticache

upvoted 2 times

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weilun_tann

3 years, 5 months ago

Selected Answer: B

- B - ElastiCache and CloudFront are both valid cache strategies - Both require cache invalidation every hour - However, CloudFront is a "region-specific" cache, and suits our "worldwide" use case here - ElastiCache is more for CONSISTENT, high-volume read workloads

upvoted 7 times

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prex

3 years, 5 months ago

Selected Answer: B

BBBBBBBBBBBB

upvoted 1 times

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Cabrera

3 years, 7 months ago

B seems to be correct. 'users around the world' = Cloudfront

upvoted 2 times

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karthisena

3 years, 7 months ago

As WE can see at the moment our simulator just shows to you the right answer. We are trying our best to add also a reasonable explanation for the provided answer. We are sorry for the inconvenience.

upvoted 2 times

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syu31svc

3 years, 7 months ago

100% is B

upvoted 4 times

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Yogi

3 years, 7 months ago

Ans=B. Launch an Amazon CloudFront web distribution to cache commonly requested website content.

upvoted 3 times

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hp298

3 years, 7 months ago

Results updated every hour. Maybe Elasticache?

upvoted 2 times

nappa

3 years, 7 months ago

you can set a cache expiration of one hour https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/Expiration.html

upvoted 1 times

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lehoang15tuoi

3 years, 7 months ago

The results are updated once per hour. So basically your whole website changes only once per hour. That's the perfect use case for Cloudfront (along with the "users around the world" thing). Next, it also means the instances themselves need to query the database once per hours. Even if you have dozens of instances, in 1 hour your instances would still make at most hundreds of requests to RDS. That's quite lightweight and doesn't necessitate a database cache.

upvoted 6 times

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[Removed]

3 years, 7 months ago

No because Elasticache it is between EC2 and RDS => so if the demand is huge you will need additional EC2 instances whereas with Cloud Front the request do not go to your EC2 instance.

upvoted 15 times

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