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Free DBS-C01 Exam Braindumps (page: 28)

Page 28 of 82
PDF with 327 Questions

A company has two separate AWS accounts: one for the business unit and another for corporate analytics. The company wants to replicate the business unit data stored in Amazon RDS for MySQL in us-east-1 to its corporate analytics Amazon Redshift environment in us-west-1. The company wants to use AWS DMS with Amazon RDS as the source endpoint and Amazon Redshift as the target endpoint.

Which action will allow AVS DMS to perform the replication?

  1. Configure the AWS DMS replication instance in the same account and Region as Amazon Redshift.
  2. Configure the AWS DMS replication instance in the same account as Amazon Redshift and in the same Region as Amazon RDS.
  3. Configure the AWS DMS replication instance in its own account and in the same Region as Amazon Redshift.
  4. Configure the AWS DMS replication instance in the same account and Region as Amazon RDS.

Answer(s): A


Reference:

https://aws.amazon.com/premiumsupport/knowledge-center/dms-redshift-target-endpoint/



A database specialist is managing an application in the us-west-1 Region and wants to set up disaster recovery in the us-east-1 Region. The Amazon Aurora MySQL DB cluster needs an RPO of 1 minute and an RTO of 2 minutes.

Which approach meets these requirements with no negative performance impact?

  1. Enable synchronous replication.
  2. Enable asynchronous binlog replication.
  3. Create an Aurora Global Database.
  4. Copy Aurora incremental snapshots to the us-east-1 Region.

Answer(s): C



A gaming company is developing a new mobile game and decides to store the data for each user in Amazon DynamoDB. To make the registration process as easy as possible, users can log in with their existing Facebook or Amazon accounts. The company expects more than 10,000 users.

How should a database specialist implement access control with the LEAST operational effort?

  1. Use web identity federation on the mobile app and AWS STS with an attached IAM role to get temporary credentials to access DynamoDB.
  2. Use web identity federation on the mobile app and create individual IAM users with credentials to access DynamoD
  3. Use a self-developed user management system on the mobile app that lets users access the data from DynamoDB through an API.
  4. Use a single IAM user on the mobile app to access DynamoDB.

Answer(s): A


Reference:

https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WIF.html



A large retail company recently migrated its three-tier ecommerce applications to AWS. The company’s backend database is hosted on Amazon Aurora PostgreSQL. During peak times, users complain about longer page load times. A database specialist reviewed Amazon RDS Performance Insights and found a spike in IO:XactSync wait events. The SQL attached to the wait events are all single INSERT statements.

How should this issue be resolved?

  1. Modify the application to commit transactions in batches
  2. Add a new Aurora Replica to the Aurora DB cluster.
  3. Add an Amazon ElastiCache for Redis cluster and change the application to write through.
  4. Change the Aurora DB cluster storage to Provisioned IOPS (PIOPS).

Answer(s): A



Page 28 of 82



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