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Exam AWS Certified Developer Associate topic 1 question 159 discussion

Exam question from Amazon's AWS Certified Developer Associate

Question #: 159
Topic #: 1

[All AWS Certified Developer Associate Questions]

A research company has a website that is used once each day to perform scientific calculations based on inputs that are submitted through a webpage. The calculations are CPU intensive. An AWS Lambda function performs the calculations once each day. Users occasionally receive errors because of Lambda function timeouts.

Which change will reduce the Lambda function's runtime duration?

A. Configure Lambda to run the function on an Amazon EC2 burstable instance type.
B. Configure Lambda to run the function on an Amazon EC2 instance type that is recommended for high performance computing (HPC) workloads.
C. Configure Lambda to run the function with a larger reserved concurrency value.
D. Configure Lambda to run the function with a larger memory value.

Show Suggested Answer

Suggested Answer: D 🗳️

by dark_cherrymon at Nov. 21, 2022, 3:30 p.m.

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Comments

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nmc12

1 year, 10 months ago

Selected Answer: D

B not good cause high cost. run only once in a day should use serverless for down cost. so i go with D. Increasing the memory value for the function will also increase the CPU power available to it

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rcaliandro

2 years, 1 month ago

Selected Answer: D

I will go to D, we can increase the lambda function memory to also increase the CPU

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Rk9855

2 years, 3 months ago

The lambda function is run only once in a day. So it should be B

upvoted 1 times

nmc12

1 year, 10 months ago

B not good cause high cost. run only once in a day should use serverless for down cost. so i go with D. Increasing the memory value for the function will also increase the CPU power available to it

upvoted 1 times

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MrTee

2 years, 3 months ago

AWS Lambda automatically scales compute capacity by creating new instances of the function to process events in parallel. The amount of CPU power allocated to a function is proportional to the amount of memory configured for the function. Therefore, increasing the memory value for the function will also increase the CPU power available to it. This can help reduce the runtime duration of CPU-intensive calculations. Based on this information, the correct answer would be D. Configure Lambda to run the function with a larger memory value.

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pancman

2 years, 5 months ago

This question was on the exam today (Feb 2023)

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ShriniW

2 years, 6 months ago

Why A is highlighted? correct answer is D

upvoted 1 times

ShriniW

2 years, 6 months ago

sry I mean to say why B is highlighted

upvoted 1 times

Dipak25

1 year, 8 months ago

ExamTopics don't have a human expert to answer the questions. It is decided based on BOT's answer. And almost always the BOT is incorrect. ExamTopics should change the way they show the answer to address confusion generated in people mind. Please go with the most voted answer. Most of the time it is correct.

upvoted 1 times

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ayoubmk

2 years, 7 months ago

Selected Answer: D

https://docs.aws.amazon.com/lambda/latest/operatorguide/configurations.html#cpu-bound-config

upvoted 2 times

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aws_leo

2 years, 8 months ago

Selected Answer: D

There are similar questions like this one, the keyword here is CPU intensive -> increase Lamba RAM

upvoted 2 times

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michaldavid

2 years, 8 months ago

Selected Answer: D

dddddddd

upvoted 2 times

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k1kavi1

2 years, 8 months ago

D https://docs.aws.amazon.com/lambda/latest/operatorguide/configurations.html#cpu-bound-config

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saysamsuf

2 years, 9 months ago

I will go with D as memory increment in lambda helps with performance.

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sionita

2 years, 9 months ago

D The amount of memory also determines the amount of virtual CPU available to a function. Adding more memory proportionally increases the amount of CPU, increasing the overall computational power available.

upvoted 4 times

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