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NEW QUESTION 45
A ride-hailing application stores bookings in a persistent Amazon RDS for MySQL DB instance. This program is very popular, and the corporation anticipates a tenfold rise in the application's user base over the next several months. The application receives a higher volume of traffic in the morning and evening.
This application is divided into two sections:
An internal booking component that takes online reservations in response to concurrent user queries.
A component of a third-party customer relationship management (CRM) system that customer service professionals utilize. Booking data is accessed using queries in the CRM.
To manage this workload effectively, a database professional must create a cost-effective database system.
Which solution satisfies these criteria?

  • A. Use Amazon DynamoDB to accept the bookings. Enable DynamoDB Streams and associate an AWS Lambda function to capture changes and push the booking data to an Amazon SQS queue. This triggers another Lambda function that pulls data from Amazon SQS and writes it to the RDS for MySQL DB instance used by the CRM.
  • B. Use Amazon ElastiCache for Redis to accept the bookings. Associate an AWS Lambda function to capture changes and push the booking data to the RDS for MySQL DB instance used by the CRM.
  • C. Use Amazon ElastiCache for Redis to accept the bookings. Associate an AWS Lambda function to capture changes and push the booking data to an Amazon Redshift database used by the CRM.
  • D. Use Amazon DynamoDB to accept the bookings. Enable DynamoDB Streams and associate an AWS Lambda function to capture changes and push the booking data to Amazon Athena, which is used by the CRM.

Answer: A

Explanation:
Explanation
"AWS Lambda function to capture changes" capture changes to what? ElastiCache? The main use of ElastiCache is to cache frequently read data. Also "the company expects a tenfold increase in the user base" and "correspond to simultaneous requests from users"

 

NEW QUESTION 46
A gaming company wants to deploy a game in multiple Regions. The company plans to save local high scores in Amazon DynamoDB tables in each Region. A Database Specialist needs to design a solution to automate the deployment of the database with identical configurations in additional Regions, as needed. The solution should also automate configuration changes across all Regions.
Which solution would meet these requirements and deploy the DynamoDB tables?

  • A. Create an AWS CloudFormation template and deploy the template to all the Regions.
  • B. Create an AWS CloudFormation template and use a stack set to deploy the template to all the Regions.
  • C. Create DynamoDB tables using the AWS Management Console in all the Regions and create a step-bystep guide for future deployments.
  • D. Create an AWS CLI command to deploy the DynamoDB table to all the Regions and save it for future deployments.

Answer: A

 

NEW QUESTION 47
A banking company recently launched an Amazon RDS for MySQL DB instance as part of a proof-of-concept project. A database specialist has configured automated database snapshots. As a part of routine testing, the database specialist noticed one day that the automated database snapshot was not created.
Which of the following are possible reasons why the snapshot was not created? (Choose two.)

  • A. The RDS DB instance is in the STORAGE_FULL state.
  • B. A copy of the RDS automated snapshot for this DB instance is in progress in a different AWS Region.
  • C. The RDS maintenance window is not configured.
  • D. A copy of the RDS automated snapshot for this DB instance is in progress within the same AWS Region.
  • E. RDS event notifications have not been enabled.

Answer: A,D

Explanation:
Explanation
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithAutomatedBackups.html

 

NEW QUESTION 48
A media company is using Amazon RDS for PostgreSQL to store user dat
a. The RDS DB instance currently has a publicly accessible setting enabled and is hosted in a public subnet. Following a recent AWS Well- Architected Framework review, a Database Specialist was given new security requirements.
Only certain on-premises corporate network IPs should connect to the DB instance. Connectivity is allowed from the corporate network only.
Which combination of steps does the Database Specialist need to take to meet these new requirements? (Choose three.)

  • A. Modify the associated security group. Add the required corporate network IPs and remove the unwanted IPs.
  • B. Enable VPC peering between the application host running on the corporate network and the VPC associated with the DB instance.
  • C. Move the DB instance to a private subnet using AWS DMS.
  • D. Disable the publicly accessible setting.
  • E. Connect to the DB instance using private IPs and a VPN.
  • F. Modify the pg_hba.conf file. Add the required corporate network IPs and remove the unwanted IPs.

Answer: B,D,E

 

NEW QUESTION 49
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