Q1. You are working with the Arinika Bank, which already have their in house datacenter and entire IT and its banking is handled in that. You have been recently hired for their new investment to develop mobile wallet. Also, it is decided to use AWS cloud and services provided by AWS cloud. For storing wallet transactions you have to use services provided by AWS. Select the correct statement which applies correctly for this requirement.

 

A. For storing all the transactions through mobile wallet. You should consider using Amazon Redshift.

B. For storing all the transactions through mobile wallet. You should consider using Amazon RDS.

C. For storing all the transactions through mobile wallet. You should consider using Amazon Elastic Database.

D. For storing all the transactions through mobile wallet. You should consider using Amazon S3.

E. You should have kept this storage layer in public subnet. So that mobile application can connect it.

F. You should have kept this storage layer in private subnet.

 

Ans: B, F

Exp: While solving this scenario we should consider the following.

What is the requirement? Ans: Storage

What are we going to store? Ans: All the transactions will happen on mobile wallet

Based on this criteria, we should consider relational databased for storing transactions. However, RDS and Redshift both are RDBMS.

But Redshift is used for OLAP (Analytics) and RDS is used of OLTP. So you will be using RDS.

Now, as a best architecting AWS solution. You must make sure your data is well protected. The first step towards this, your storage layer must be in private subnet. Also you should have proper Security Rules and NACL, so that they are not at risk.

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