A company is making use of Kinesis streams for transferring data from various sources. The Consumers will run at different times depending on the priority of data retrieval. Most consumers run within the hour and there are some which run once in 2 days. Which of the following must be implemented on the stream to ensure all data gets processed from within the stream?

Answer options:

A.Ensure that encryption is enabled on the stream
B.Ensure that the data retention is changed for the stream
C.Ensure that Kinesis Firehose is attached to the stream
D.Ensure that the consumer runs on an EC2 Instance

Answer – B
The AWS Documentation mentions the following
Amazon Kinesis Data Streams supports changes to the data record retention period of your stream. A Kinesis data stream is an ordered sequence of data records meant to be written to and read from in real time. Data records are therefore stored in shards in your stream temporarily. The time period from when a record is added to when it is no longer accessible is called the retention period. A Kinesis data stream stores records from 24 hours by default, up to 168 hours.
All of the other options are incorrect since these are not key requirements for ensuring that data gets processed from the stream.
For more information on the retention period, please refer to the below URL
https://docs.aws.amazon.com/streams/latest/dev/kinesis-extended-retention.html