Exam AWS Certified Big Data - Specialty topic 1 question 15 discussion

D is the right answer. S3 is very cost effective. CRR happens from few seconds to few minutes and will satisfy within 24 hrs requirement. B is an absurd - CloudFront is for content serving and as such logs content access. It does not store transaction logs. C is NOT the right answer. Kinesis stores data only for a period of time (24 Hrs by default) and then the data will expire. Any data regulatory requirement would also expect the data to be durable along with being available within a period of time.

I will go with D. CRR seems correct to me.

The consensus seems do be C or D but the posted answer is B, Cloudfront. Does anyone have an explanation or is the answer wrong?

I will probably choose D

For me the key in this questions is "The new country contains another AWS region" so hinting at CRR

Answer should be D, as its cost effective.

I think D is the right answer coz of cost effectiveness. C seems to be a dis-tractor to me.

answer id D. Enabling S3 cross region replication is cheaper. the sentence latency insensitive means no Kinesis and Cloudfront, both can improve performance but at additional service cost.

B 'Cost efficiency'-A is out ‘latency intensive ’ C&D are out

Data Architect to maintain a log of financial transactions in the country within 24 hours of the product transaction - If C, Kinesis records expire after 24 hours, if the logs are to be maintained, then we need a persistent storage in S3. D - Seems correct.

my selection D

I chose D. As only the logs need to be maintained in the new country, S3 cross region replication can be used to copy the data to the AWS region within the new Country.

D -- based on this link... It says "CRR is a bucket-level configuration, and it can help you meet compliance requirements and minimize latency by keeping copies of your data in different Regions." https://aws.amazon.com/blogs/big-data/trigger-cross-region-replication-of-pre-existing-objects-using-amazon-s3-inventory-amazon-emr-and-amazon-athena/ Please let me know if you agree

what's the final answer here ... C or D?

C looks reasonable. 1. The primary requirement in this scenario is to maintain a log of the financial transaction in the country (existing) within 24 hours of the product transaction. 2. Given that the product application is latency insenstive. Based on #2 above, they can continue to serve from the existing region. And use Kinesis to stream transactions to the Regulator.

Ans is C. By default, Records of a Kinesis stream are accessible for up to 24 hours from the time they are added to the stream

The regulator for that country requires the Data Architect to maintain a log of financial transactions in the country "within 24 hours of the product transaction" : Option C. Sending each product transaction to Kinesis will make each of them persist there for 24 hours(default) before they expire.