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AWS Certified Database - Specialty Questions and Answers

Question 1

A vehicle insurance company needs to choose a highly available database to track vehicle owners and their insurance details. The persisted data should be immutable in the database, including the complete and sequenced history of changes over time with all the owners and insurance transfer details for a vehicle.

The data should be easily verifiable for the data lineage of an insurance claim.

Which approach meets these requirements with MINIMAL effort?

Options:

A.

Create a blockchain to store the insurance details. Validate the data using a hash function to verify the data lineage of an insurance claim.

B.

Create an Amazon DynamoDB table to store the insurance details. Validate the data using AWS DMS validation by moving the data to Amazon S3 to verify the data lineage of an insurance claim.

C.

Create an Amazon QLDB ledger to store the insurance details. Validate the data by choosing the ledger name in the digest request to verify the data lineage of an insurance claim.

D.

Create an Amazon Aurora database to store the insurance details. Validate the data using AWS DMS validation by moving the data to Amazon S3 to verify the data lineage of an insurance claim.

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Question 2

A database specialist is constructing an AWS CloudFormation stack using AWS CloudFormation. The database expert wishes to avoid the stack's Amazon RDS ProductionDatabase resource being accidentally deleted.

Which solution will satisfy this criterion?

Options:

A.

Create a stack policy to prevent updates. Include ג€Effectג€ : ג€ProductionDatabaseג€ and ג€Resourceג€ : ג€Denyג€ in the policy.

B.

Create an AWS CloudFormation stack in XML format. Set xAttribute as false.

C.

Create an RDS DB instance without the DeletionPolicy attribute. Disable termination protection.

D.

Create a stack policy to prevent updates. Include Effect, Deny, and Resource :ProductionDatabase in the policy.

Question 3

An information management services company is storing JSON documents on premises. The company is using a MongoDB 3.6 database but wants to migrate to

AWS. The solution must be compatible, scalable, and fully managed. The solution also must result in as little downtime as possible during the migration.

Which solution meets these requirements?

Options:

A.

Create an AWS Database Migration Service (AWS DMS) replication instance, a source endpoint for MongoDB, and a target endpoint of Amazon DocumentDB (with MongoDB compatibility).

B.

Create an AWS Database Migration Service (AWS DMS) replication instance, a source endpoint for MongoDB, and a target endpoint of a MongoDB image that is hosted on Amazon EC2

C.

Use the mongodump and mongorestore tools to migrate the data from the source MongoDB deployment to Amazon DocumentDB (with MongoDB compatibility).

D.

Use the mongodump and mongorestore tools to migrate the data from the source MongoDB deployment to a MongoDB image that is hosted on Amazon EC2.