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 DBS-C01 Dumps with Practice Exam Questions Answers

Questions: 270 questions

Last Update: Nov 24, 2022

Amazon Web Services Certification Exam DBS-C01 has been designed to measure your skills in handling the technical tasks mentioned in the certification syllabus

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DBS-C01 Questions and Answers

Question # 1

A database specialist wants to ensure that an Amazon Aurora DB cluster is always automatically upgraded to the most recent minor version available. Noticing that there is a new minor version available, the database specialist has issues an AWS CLI command to enable automatic minor version updates. The command runs successfully, but checking the Aurora DB cluster indicates that no update to the Aurora version has been made.

What might account for this? (Choose two.)

A.

The new minor version has not yet been designated as preferred and requires a manual upgrade.

B.

Configuring automatic upgrades using the AWS CLI is not supported. This must be enabled expressly using the AWS Management Console.

C.

Applying minor version upgrades requires sufficient free space.

D.

The AWS CLI command did not include an apply-immediately parameter.

E.

Aurora has detected a breaking change in the new minor version and has automatically rejected the upgrade.

Question # 2

A business is transferring a database from one AWS Region to another using an Amazon RDS for SQL Server DB instance. The organization wishes to keep database downtime to a minimum throughout the transfer.

Which migration strategy should the organization use for this cross-regional move?

A.

Back up the source database using native backup to an Amazon S3 bucket in the same Region. Then restore the backup in the target Region.

B.

Back up the source database using native backup to an Amazon S3 bucket in the same Region. Use Amazon S3 Cross-Region Replication to copy the backup to an S3 bucket in the target Region. Then restore the backup in the target Region.

C.

Configure AWS Database Migration Service (AWS DMS) to replicate data between the source and the target databases. Once the replication is in sync, terminate the DMS task.

D.

Add an RDS for SQL Server cross-Region read replica in the target Region. Once the replication is in sync, promote the read replica to master.

Question # 3

A company wants to build a new invoicing service for its cloud-native application on AWS. The company has a small development team and wants to focus on service feature development and minimize operations and maintenance as much as possible. The company expects the service to handle billions of requests and millions of new records every day. The service feature requirements, including data access patterns are well-defined. The service has an availability target of

99.99% with a milliseconds latency requirement. The database for the service will be the system of record for invoicing data.

Which database solution meets these requirements at the LOWEST cost?

A.

Amazon Neptune

B.

Amazon Aurora PostgreSQL Serverless

C.

Amazon RDS for PostgreSQL

D.

Amazon DynamoDB

Question # 4

A Database Specialist needs to define a database migration strategy to migrate an on-premises Oracle database to an Amazon Aurora MySQL DB cluster. The company requires near-zero downtime for the data migration. The solution must also be cost-effective.

Which approach should the Database Specialist take?

A.

Dump all the tables from the Oracle database into an Amazon S3 bucket using datapump (expdp). Run data transformations in AWS Glue. Load the data from the S3 bucket to the Aurora DB cluster.

B.

Order an AWS Snowball appliance and copy the Oracle backup to the Snowball appliance. Once the Snowball data is delivered to Amazon S3, create a new Aurora DB cluster. Enable the S3 integration to migrate the data directly from Amazon S3 to Amazon RDS.

C.

Use the AWS Schema Conversion Tool (AWS SCT) to help rewrite database objects to MySQL during the schema migration. Use AWS DMS to perform the full load and change data capture (CDC) tasks.

D.

Use AWS Server Migration Service (AWS SMS) to import the Oracle virtual machine image as an Amazon EC2 instance. Use the Oracle Logical Dump utility to migrate the Oracle data from Amazon EC2 to an Aurora DB cluster.

Question # 5

A bike rental company operates an application to track its bikes. The application receives location and condition data from bike sensors. The application also receives rental transaction data from the associated mobile app.

The application uses Amazon DynamoDB as its database layer. The company has configured DynamoDB with provisioned capacity set to 20% above the expected peak load of the application. On an average day, DynamoDB used 22 billion read capacity units (RCUs) and 60 billion write capacity units (WCUs). The application is running well. Usage changes smoothly over the course of the day and is generally shaped like a bell curve. The timing and magnitude of peaks vary based on the weather and season, but the general shape is consistent.

Which solution will provide the MOST cost optimization of the DynamoDB database layer?

A.

Change the DynamoDB tables to use on-demand capacity.

B.

Use AWS Auto Scaling and configure time-based scaling.

C.

Enable DynamoDB capacity-based auto scaling.

D.

Enable DynamoDB Accelerator (DAX).