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 26 discussion

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

Question #: 26
Topic #: 1

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

A manufacturing company wants to implement predictive maintenance on its machinery equipment. The company will install thousands of IoT sensors that will send data to AWS in real time. A solutions architect is tasked with implementing a solution that will receive events in an ordered manner for each machinery asset and ensure that data is saved for further processing at a later time.
Which solution would be MOST efficient?

A. Use Amazon Kinesis Data Streams for real-time events with a partition for each equipment asset. Use Amazon Kinesis Data Firehose to save data to Amazon S3.
B. Use Amazon Kinesis Data Streams for real-time events with a shard for each equipment asset. Use Amazon Kinesis Data Firehose to save data to Amazon Elastic Block Store (Amazon EBS).
C. Use an Amazon SQS FIFO queue for real-time events with one queue for each equipment asset. Trigger an AWS Lambda function for the SQS queue to save data to Amazon Elastic File System (Amazon EFS).
D. Use an Amazon SQS standard queue for real-time events with one queue for each equipment asset. Trigger an AWS Lambda function from the SQS queue to save data to Amazon S3.

Show Suggested Answer

Suggested Answer: A 🗳️

by vvahe at Aug. 31, 2021, 8:31 a.m.

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vvahe

Highly Voted 3 years, 9 months ago

Answer is A Kinesis Data Streams + Kinesis Data Firehose + Amazon S3 Explanation: Question says ordered manner so SQS standard queue already falls short, that no ordered, SQS FIFO would be but using lambda to process larga amounts of realtimedata is not as efficient as Kinesis Data Streams + Kinesis Data Firehose. And EBS is not a target of Firehose so S3 is the correct option here

upvoted 44 times

gargaditya

3 years, 7 months ago

Correct, valid targets for KDF are S3, Redshift(copy via S3) and ElasticSearch ,no EBS. Further, 'real time' implies Kinesis. Another reason why B is incorrect is each shard need not be assigned to one sensor. Multiple sensors can use same shard. Thanks to the 'partition key' , if each sensor uses different key, hashing ensures that one random shard (remains same as partition key not changing)gets assigned to the sensor. Within a shard,data is always ordered ('sequence no').

upvoted 3 times

gargaditya

3 years, 7 months ago

Why not C? SQS FIFO has message id for grouping.Messages with same msg id are processed together,hence no need of indiv SQS FIFO queues.

upvoted 3 times

Alcpt

3 years, 6 months ago

sqs is not near-real-time. Kinesis is built for nrt.

upvoted 2 times

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ViajanDee

Highly Voted 3 years, 9 months ago

The correct answer is C The keyword is "a solution that will receive events in an ordered manner" which requires FIFO

upvoted 8 times

gargaditya

3 years, 7 months ago

Its A. Why not C? SQS FIFO has message id for grouping.Messages with same msg id are processed together,hence no need of indiv SQS FIFO queues.

upvoted 1 times

naveenagurjara

3 years ago

KDS uses Shards to maintain ordering same as FIFO for SQS.

upvoted 1 times

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Mia2009687

2 years ago

SQS FIFO is correct. But it stores to EFS which is not cheap.

upvoted 1 times

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Alcpt

3 years, 6 months ago

SQS FIFO and KDS receive data in ordered sequence.

upvoted 1 times

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gargaditya

3 years, 7 months ago

Kinesis Data Stream maintains ordering within shard,thanks to 'sequence numbers'. And one can ensure each sensor uses same shard by keeping its 'paritition key' the same. Further,multiple sensors may be mapped to same shard(internal hashing can map 2 different partition keys to same shard), but we always ensure that each sensor data(tied to one shard) is always ordered. Answer is A. Further,not B due to my above explanation on multiple sensors being able to use same shard.Also valid consumers for KDF are S3, Redshift(copy thru S3) and ElasticSearch, NO EBS.

upvoted 3 times

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Alcpt

3 years, 8 months ago

The Answer is A https://aws.amazon.com/kinesis/data-streams/faqs/ How does Amazon Kinesis Data Streams differ from Amazon SQS? Amazon Kinesis Data Streams enables real-time processing of streaming big data. It provides ORDERING of records, as well as the ability to read and/or replay records in the same order to multiple Amazon Kinesis Applications.

upvoted 7 times

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GB32

Most Recent 1 year, 2 months ago

the answer is defo A, by the way who say's D is correct SQS makes sense in a way but...we not using lambda here, we need real time data stream as the IoT data comes in in real time.. just think about it.

upvoted 1 times

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48cd959

1 year, 3 months ago

Selected Answer: A

Answer -A Realtime Data Ingestion - Kinesis Data Stream and Firehose can put data in S3. There is no need to use EBS, EBS instance will unnecessary costly.

upvoted 1 times

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jatric

1 year, 10 months ago

Selected Answer: A

for real time processing KDS with KDF + S3 is the correct and best combination to support real time data and process later in order

upvoted 1 times

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BauCloud

2 years ago

C is the correct answer because thousands of IOT will send data to AWS (using EFS service) then the data has to be sent in an order manner (SQS FIFO)

upvoted 1 times

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onkargondhali

2 years ago

Selected Answer: A

kinesis DS and Kinesis data firehose perfectly suits here.

upvoted 1 times

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depressedkid69

2 years, 2 months ago

Selected Answer: A

WHY DOES IT SAY D?

upvoted 1 times

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[Removed]

2 years, 6 months ago

D is correct it says'saved for further processing at a later time.'

upvoted 1 times

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WuKongCoder

2 years, 8 months ago

Selected Answer: A

Kinesis Data Streams + Kinesis Data Firehose + Amazon S3

upvoted 2 times

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stepman

2 years, 9 months ago

The question is stating that the data is being sent from a bunch of IoT devices to AWS in real time, but not necessarily asking it be analyzed in real time. It’s seeking for efficiency preserving the order of ingestion so with these conditions, I’d think it would be C.. SQS FIFO + EFS

upvoted 2 times

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naveenagurjara

3 years ago

Selected Answer: A

KDS uses Shards with Partition key for ordering.

upvoted 2 times

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Angrydove

3 years ago

Only the transmit between IoT sensors and AWS must be real-time and SQS can receive data in real-time. We don't need to concern where post-processing must be real-time or not. So C is correct

upvoted 1 times

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nharaz

3 years, 1 month ago

(implementing predictive maintenance on its machines) Because of this Lambda is an option so I rule out A and B, In my opinion I will go for D. https://aws.amazon.com/solutions/implementations/predictive-maintenance-using-machine-learning/

upvoted 1 times

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