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Question 128 - DAS-C01 discussion

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A power utility company is deploying thousands of smart meters to obtain real-time updates about power consumption. The company is using Amazon Kinesis Data Streams to collect the data streams from smart meters. The consumer application uses the Kinesis Client Library (KCL) to retrieve the stream data. The company has only one consumer application.

The company observes an average of 1 second of latency from the moment that a record is written to the stream until the record is read by a consumer application. The company must reduce this latency to 500 milliseconds. Which solution meets these requirements?

A.
Use enhanced fan-out in Kinesis Data Streams.
Answers
A.
Use enhanced fan-out in Kinesis Data Streams.
B.
Increase the number of shards for the Kinesis data stream.
Answers
B.
Increase the number of shards for the Kinesis data stream.
C.
Reduce the propagation delay by overriding the KCL default settings.
Answers
C.
Reduce the propagation delay by overriding the KCL default settings.
D.
Develop consumers by using Amazon Kinesis Data Firehose.
Answers
D.
Develop consumers by using Amazon Kinesis Data Firehose.
Suggested answer: C

Explanation:


The KCL defaults are set to follow the best practice of polling every 1 second. This default results in average propagation delays that are typically below 1 second. Reference: https://docs.aws.amazon.com/streams/latest/dev/kinesis-low-latency.html

asked 16/09/2024
Ahmad Khader
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