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Amazon Web Services AWS Certified Database DBS-C01 New Questions

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Question 88

A company has an application that uses an Amazon DynamoDB table to store user data. Every morning, a single-threaded process calls the DynamoDB API Scan operation to scan the entire table and generate a critical start-of-day report for management. A successful marketing campaign recently doubled the number of items in the table, and now the process takes too long to run and the report is not generated in time.

A database specialist needs to improve the performance of the process. The database specialist notes that, when the process is running, 15% of the table’s provisioned read capacity units (RCUs) are being used.

What should the database specialist do?

Options:

A.

Enable auto scaling for the DynamoDB table.

B.

Use four threads and parallel DynamoDB API Scan operations.

C.

Double the table’s provisioned RCUs.

D.

Set the Limit and Offset parameters before every call to the API.

Question 89

A company's application team needs to select an AWS managed database service to store application and user data. The application team is familiar with MySQL but is open to new solutions. The application and user data is stored in 10 tables and is de-normalized. The application will access this data through an API layer using an unique ID in each table. The company expects the traffic to be light at first, but the traffic Will Increase to thousands of transactions each second within the first year- The database service must support active reads

and writes in multiple AWS Regions at the same time_ Query response times need to be less than 100 ms Which AWS database solution will meet these requirements?

Options:

A.

Deploy an Amazon RDS for MySQL environment in each Region and leverage AWS Database Migration Service (AWS DMS) to set up a multi-Region bidirectional replication

B.

Deploy an Amazon Aurora MySOL global database with write forwarding turned on

C.

Deploy an Amazon DynamoDB database with global tables

D.

Deploy an Amazon DocumentDB global cluster across multiple Regions.

Question 90

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?

Options:

A.

Use web identity federation on the mobile app and AWS STS with an attached IAM role to get temporary credentials to access DynamoDB.

B.

Use web identity federation on the mobile app and create individual IAM users with credentials to access DynamoDB.

C.

Use a self-developed user management system on the mobile app that lets users access the data from DynamoDB through an API.

D.

Use a single IAM user on the mobile app to access DynamoDB.

Question 91

A company is running critical applications on AWS. Most of the application deployments use Amazon Aurora MySQL for the database stack. The company uses AWS CloudFormation to deploy the DB instances.

The company's application team recently implemented a CI/CD pipeline. A database engineer needs to integrate the database deployment CloudFormation stack with the newly built CllCD platform. Updates to the CloudFormation stack must not update existing production database resources.

Which CloudFormation stack policy action should the database engineer implement to meet these requirements?

Options:

A.

Use a Deny statement for the Update:Modify action on the production database resources.

B.

Use a Deny statement for the action on the production database resources.

C.

Use a Deny statement for the Update:Delete action on the production database resources.

D.

Use a Deny statement for the Update:Replace action on the production database resources.

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Exam Code: DBS-C01
Exam Name: AWS Certified Database - Specialty
Last Update: Apr 26, 2024
Questions: 324
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