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 429 discussion

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

Question #: 429
Topic #: 1

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

A development team is deploying a new product on AWS and is using AWS Lambda as part of the deployment. The team allocates 512 MB of memory for one of the Lambda functions. With this memory allocation, the function is completed in 2 minutes. The function runs millions of times monthly, and the development team is concerned about cost. The team conducts tests to see how different Lambda memory allocations affect the cost of the function.
Which steps will reduce the Lambda costs for the product? (Choose two.)

A. Increase the memory allocation for this Lambda function to 1,024 MB if this change causes the execution time of each function to be less than 1 minute.
B. Increase the memory allocation for this Lambda function to 1,024 MB if this change causes the execution time of each function to be less than 90 seconds.
C. Reduce the memory allocation for this Lambda function to 256 MB if this change causes the execution time of each function to be less than 4 minutes.
D. Increase the memory allocation for this Lambda function to 2,048 MB if this change causes the execution time of each function to be less than 1 minute.
E. Reduce the memory allocation for this Lambda function to 256 MB if this change causes the execution time of each function to be less than 5 minutes.

Show Suggested Answer

Suggested Answer: AE 🗳️

by jkwek at May 1, 2021, 7:50 a.m.

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Comments

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syu31svc

Highly Voted 3 years, 8 months ago

https://dashbird.io/lambda-cost-calculator/ Try the link above and you'll get A and C as the answers

upvoted 31 times

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jkwek

Highly Voted 3 years, 8 months ago

Answers are A and C. The reasons are simple maths. If A is chosen, the memory used is double but the completion time is less than 2 minutes, not 2 minutes. Answer C is better and more efficient than answer E.

upvoted 16 times

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rac_sp

Most Recent 2 years, 8 months ago

Selected Answer: C

Answer is c due to math

upvoted 1 times

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Fyssy

2 years, 9 months ago

A and C

upvoted 1 times

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LimeCake

2 years, 9 months ago

math question ;)

upvoted 1 times

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VijiTu

2 years, 11 months ago

Refer the chart in this link and hence AC and best fit.. As memory is increased it need not be exact proportion still it will bring down the execution time. So AC is right pick https://aws.amazon.com/blogs/aws/new-for-aws-lambda-functions-with-up-to-10-gb-of-memory-and-6-vcpus/

upvoted 1 times

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xav1er

2 years, 12 months ago

Selected Answer: AC

A & C Pay per duration: (in increment of 1 ms) • 400,000 GB-seconds of compute time per month for FREE • == 400,000 seconds if function is 1GB RAM • == 3,200,000 seconds if function is 128 MB RAM

upvoted 1 times

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Karthikeyan_nick

3 years, 1 month ago

A. 512*2 => 1024 => 1 min C. 512/2 => 256 => 4 min

upvoted 5 times

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SDikeman62

3 years, 2 months ago

How about B and C. B is even better option than A.

upvoted 1 times

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AWSequalsPromotion

3 years, 4 months ago

Selected Answer: AC

ratio and proportion. This is 3rd grade math.

upvoted 1 times

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muhsin

3 years, 5 months ago

AC 512mb * 1200ms == 1024mb * 600ms == 256mb * 2400ms

upvoted 1 times

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jensoncherussery

3 years, 6 months ago

AE is correct ..C may be correct .but exam point of view E is correct and their SW will be verify based on E

upvoted 1 times

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manan728

3 years, 6 months ago

If the function takes 2min for a single run, max it will run is 720 times a day and 22320 times a month that has 31 days. Million is a far cry.

upvoted 2 times

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nlee

3 years, 7 months ago

is it a simple Math? Cuz Stephane Maarek AND that page below say that: 2 vCPUs per 1.5 GB RAM. https://aws.amazon.com/ko/blogs/aws/new-for-aws-lambda-functions-with-up-to-10-gb-of-memory-and-6-vcpus/ Please confirm me...

upvoted 1 times

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