Amazon Web Services pass4success newly Released Dva-c02 Exam Pdf by Rylee q26 vce pdf

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Exam Name:	AWS Certified Developer - Associate
Exam Code:	DVA-C02 Dumps
Vendor:	Amazon Web Services	Certification:	AWS Certified Associate
Questions:	368 Q&A's	Shared By:	rylee

Question 92

A development team maintains a web application by using a single AWS CloudFormation template. The template defines web servers and an Amazon RDS database. The team uses the Cloud Formation template to deploy the Cloud Formation stack to different environments.

During a recent application deployment, a developer caused the primary development database to be dropped and recreated. The result of this incident was a loss of data. The team needs to avoid accidental database deletion in the future.

Which solutions will meet these requirements? (Choose two.)

Options:

Add a CloudFormation Deletion Policy attribute with the Retain value to the database resource.

Update the CloudFormation stack policy to prevent updates to the database.

Modify the database to use a Multi-AZ deployment.

Create a CloudFormation stack set for the web application and database deployments.

Add a Cloud Formation DeletionPolicy attribute with the Retain value to the stack.

Discussion

Question 93

A developer is building a microservice that uses AWS Lambda to process messages from an Amazon Simple Queue Service (Amazon SQS) standard queue. The Lambda function calls external APIs to enrich the SOS message data before loading the data into an Amazon Redshift data warehouse. The SOS queue must handle a maximum of 1.000 messages per second.

During initial testing, the Lambda function repeatedly inserted duplicate data into the Amazon Redshift table. The duplicate data led to a problem with data analysis. All duplicate messages were submitted to the queue within 1 minute of each other.

How should the developer resolve this issue?

Options:

Create an SOS FIFO queue. Enable message deduplication on the SOS FIFO queue.

Reduce the maximum Lambda concurrency that the SOS queue can invoke.

Use Lambda's temporary storage to keep track of processed message identifiers.

Configure a message group ID for every sent message. Enable message deduplication on the SQS standard queue.

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Question 94

A company caches session information for a web application in an Amazon DynamoDB table. The company wants an automated way to delete old items from the table.

What is the simplest way to do this?

Options:

Write a script that deletes old records; schedule the script as a cron job on an Amazon EC2 instance.

Add an attribute with the expiration time; enable the Time To Live feature based on that attribute.

Each day, create a new table to hold session data; delete the previous day's table.

Add an attribute with the expiration time; name the attribute ItemExpiration.

Discussion

Question 95

In a move toward using microservices, a company's management team has asked all development teams to build their services so that API requests depend only on that service's data store. One team is building a Payments service which has its own database; the service needs data that originates in the Accounts database. Both are using Amazon DynamoDB.

What approach will result in the simplest, decoupled, and reliable method to get near-real time updates from the Accounts database?

Options:

Use AWS Glue to perform frequent ETL updates from the Accounts database to the Payments database.

Use Amazon ElastiCache in Payments, with the cache updated by triggers in the Accounts database.

Use Amazon Data Firehose to deliver all changes from the Accounts database to the Payments database.

Use Amazon DynamoDB Streams to deliver all changes from the Accounts database to the Payments database.

Discussion

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