Exam AWS Certified Solutions Architect - Professional All Questions

View all questions & answers for the AWS Certified Solutions Architect - Professional exam

Exam AWS Certified Solutions Architect - Professional topic 1 question 941 discussion

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

Question #: 941
Topic #: 1

[All AWS Certified Solutions Architect - Professional Questions]

A company has a media metadata extraction pipeline running on AWS. Notifications containing a reference to a file in Amazon S3 are sent to an Amazon Simple
Notification Service (Amazon SNS) topic. The pipeline consists of a number of AWS Lambda functions that are subscribed to the SNS topic. The Lambda functions extract the S3 tile and write metadata to an Amazon RDS PostgreSQL DB instance.
Users report that updates to the metadata are sometimes slow to appear or are lost. During these times, the CPU utilization on the database is high and the number of failed Lambda invocations increases.
Which combination of actions should a solutions architect take to help resolve this issue? (Choose two.)

A. Enable message delivery status on the SNS topic. Configure the SNS topic delivery policy to enable retries with exponential backoff.
B. Create an Amazon Simple Queue Service (Amazon SQS) FIFO queue and subscribe the queue to the SNS topic. Configure the Lambda functions to consume messages from the SQS queue.
C. Create an RDS proxy for the RDS instance. Update the Lambda functions to connect to the RDS instance using the proxy.
D. Enable the RDS Data API for the RDS instance. Update the Lambda functions to connect to the RDS instance using the Data API.
E. Create an Amazon Simple Queue Service (Amazon SQS) standard queue for each Lambda function and subscribe the queues to the SNS topic. Configure the Lambda functions to consume messages from their respective SQS queue.

Show Suggested Answer

Suggested Answer: CE 🗳️

by SGES at Sept. 3, 2022, 11:38 a.m.

Disclaimers:

- ExamTopics website is not related to, affiliated with, endorsed or authorized by Amazon.
- Trademarks, certification & product names are used for reference only and belong to Amazon.

Comments

Submit Cancel

Rocketeer

Highly Voted 2 years, 9 months ago

I think BC. Having single SQS queue is better than multiple SQS queues. Hence don't like E.

upvoted 5 times

...

astalavista1

Highly Voted 2 years, 8 months ago

Selected Answer: CE

CE With SNS in front of SQS, you can have multiple messages processed and RDS Proxy handles multiple database connections.

upvoted 5 times

...

wassb

Most Recent 2 years, 7 months ago

Selected Answer: CE

Typical Fan-out architecture

upvoted 3 times

wassb

2 years, 7 months ago

with RDS proxy to manage the multiple connection

upvoted 1 times

...

dcdcdc3

2 years, 8 months ago

Selected Answer: CE

B would create an issue if multiple lambdas are picking from one queue as other lambdas wouldn't know if an item is picked? https://stackoverflow.com/questions/62349013/triggering-multiple-lambda-functions-from-one-sqs-trigger

upvoted 2 times

...

JayF88

2 years, 8 months ago

Selected Answer: BC

I'm not seeing anything wrong with B as well, BCE could work

upvoted 1 times

superuser784

2 years, 7 months ago

question says that current design is SNS -> (several lambda function's ) which works because the SNS delivers the same message to EACH lambda, if you choose B the design would be SNS -> SQS FIFO -> (several lambda function's ), with this design the lambda function will compite for the messages and the initial solution each Lambda has its OWN message, Option E is the correct one because you will have SNS -> several SQS -> a lambda for each SQS which is the fanout pattern, with this each lambda will have its own message again and will not compite. Solutions C E

upvoted 1 times

...

SGES

2 years, 9 months ago

CE https://aws.amazon.com/rds/proxy/

upvoted 3 times

...