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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 Hide Answer
Suggested Answer: A 🗳️
by gsw at April 30, 2021, 3:17 p.m.
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ExtHo
Highly Voted 3 years, 7 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, 9 months ago
CCC. GJ
upvoted 1 times
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beebatov
Highly Voted 3 years, 7 months ago
Answer: C Hints: Unstructured data store + Eliminate licenses cost
upvoted 5 times
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SkyZeroZx
Most Recent 1 year, 10 months ago
Selected Answer: C
c because eliminate licensing costs and scalability.
upvoted 1 times
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syaldram
2 years, 4 months ago
Isn't DynamoDB used for "structured" data?
upvoted 1 times
mnsait
5 months 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, 3 months ago
Answer is C!!!
upvoted 2 times
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pititcu667
3 years, 4 months ago
Selected Answer: C
c because eliminate licensing costs and scalability.
upvoted 1 times
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AzureDP900
3 years, 5 months ago
C is right answer for scalability and reduce license cost
upvoted 1 times
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andylogan
3 years, 6 months ago
It's C
upvoted 2 times
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tgv
3 years, 6 months ago
CCC --- A: single RDS doesn't improve reliability B: two additional copies of the Oracle database doesn't eliminate licensing costs D: doesn't address the scalability issues
upvoted 3 times
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blackgamer
3 years, 6 months ago
C is the answer.
upvoted 1 times
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Kopa
3 years, 6 months ago
Im going for C
upvoted 1 times
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WhyIronMan
3 years, 6 months ago
I'll go with C
upvoted 4 times
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mustpassla
3 years, 6 months ago
C for sure
upvoted 1 times
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vkbajoria
3 years, 6 months ago
my vote goes to C
upvoted 1 times
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Waiweng
3 years, 6 months ago
it's C
upvoted 2 times
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Jaypdv
3 years, 7 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, 7 months ago
Typo. I mean C.
upvoted 3 times
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gsw
3 years, 7 months ago
doesn't make sense - structured data would normally be Dynamo DB
upvoted 1 times
gsw
3 years, 7 months ago
has to be C or D
upvoted 1 times
hdomingo
3 years, 6 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, 7 months ago
i think C
upvoted 2 times
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jduo
3 years, 7 months ago
Oracle database to store unstructured data catalog information
upvoted 1 times
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DashL
3 years, 6 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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Community vote distribution
A (35%)
C (25%)
B (20%)
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