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Exam AWS Certified Solutions Architect - Professional topic 1 question 744 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional

Question #: 744
Topic #: 1

[All AWS Certified Solutions Architect - Professional Questions]

A company has an application that sells tickets online and experiences bursts of demand every 7 days. The application has a stateless presentation layer running on Amazon EC2, an Oracle database to store unstructured data catalog information, and a backend API layer. The front-end layer uses an Elastic Load Balancer to distribute the load across nine On-Demand instances over three Availability Zones (AZs). The Oracle database is running on a single EC2 instance. The company is experiencing performance issues when running more than two concurrent campaigns. A solutions architect must design a solution that meets the following requirements:
✑ Address scalability issues.
✑ Increase the level of concurrency.
✑ Eliminate licensing costs.
✑ Improve reliability.
Which set of steps should the solutions architect take?

A. Create an Auto Scaling group for the front end with a combination of On-Demand and Spot Instances to reduce costs. Convert the Oracle database into a single Amazon RDS reserved DB instance.
B. Create an Auto Scaling group for the front end with a combination of On-Demand and Spot Instances to reduce costs. Create two additional copies of the database instance, then distribute the databases in separate AZs.
C. Create an Auto Scaling group for the front end with a combination of On-Demand and Spot Instances to reduce costs. Convert the tables in the Oracle database into Amazon DynamoDB tables.
D. Convert the On-Demand Instances into Spot instances to reduce costs for the front end. Convert the tables in the Oracle database into Amazon DynamoDB tables.

Show Suggested Answer

Suggested Answer: A 🗳️

by gsw at April 30, 2021, 3:17 p.m.

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Comments

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ExtHo

Highly Voted 3 years, 9 months ago

C Combination of On-Demand and Spot Instances + DynamoDB. D Should be eliminated due to only use of Spot Instance as any time can be taken back by AWS

upvoted 23 times

hilft

2 years, 11 months ago

CCC. GJ

upvoted 1 times

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beebatov

Highly Voted 3 years, 9 months ago

Answer: C Hints: Unstructured data store + Eliminate licenses cost

upvoted 5 times

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SkyZeroZx

Most Recent 2 years ago

Selected Answer: C

c because eliminate licensing costs and scalability.

upvoted 1 times

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syaldram

2 years, 6 months ago

Isn't DynamoDB used for "structured" data?

upvoted 1 times

mnsait

6 months, 4 weeks ago

DynamoDB is NoSQL. Can be used for both structured and unstructured data. Better suited for unstructured use cases that require an extremely fast database that can scale very well.

upvoted 1 times

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HellGate

3 years, 5 months ago

Answer is C!!!

upvoted 2 times

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pititcu667

3 years, 6 months ago

3 years, 9 months ago

Voting for D. Option A. does not eliminate licensing cost. At best it's included in the RDS instance price. And the question mentions "unstructured data" which fits DynamoDB well.

upvoted 2 times

Jaypdv

3 years, 9 months ago

Typo. I mean C.

upvoted 3 times

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gsw

3 years, 9 months ago

doesn't make sense - structured data would normally be Dynamo DB

upvoted 1 times

gsw

3 years, 9 months ago

has to be C or D

upvoted 1 times

hdomingo

3 years, 8 months ago

Spot instances (option D) is not valid response, because dont meet de requirements of "Address scalability issues". Correct option is C

upvoted 1 times

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gsw

3 years, 9 months ago

i think C

upvoted 2 times

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jduo

3 years, 9 months ago

Oracle database to store unstructured data catalog information

upvoted 1 times

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DashL

3 years, 8 months ago

It is required to address "Scalability issue", which can be addressed only by AutoScaling. That means the options are A, B or C. No "Licensing cost - That is addressed by only option C. The other two requirements are: "Increase the level of concurrency "and "Improve reliability" - Options C meets those.

upvoted 2 times

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