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Amazon Web Services Updated DVA-C02 Exam Questions and Answers by francisco

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Amazon Web Services DVA-C02 Exam Overview :

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: francisco
Question 16

A gaming application stores scores for players in an Amazon DynamoDB table that has four attributes: user_id, user_name, user_score, and user_rank. The users are allowed to update their names only. A user is authenticated by web identity federation.

Which set of conditions should be added in the policy attached to the role for the dynamodb:PutItem API call?

Options:

A.

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_id} "],

"dynamodb:Attributes": ["user_name"]

}

}

B.

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_name} "],

"dynamodb:Attributes": ["user_id"]

}

}

C.

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_id} "],

"dynamodb:Attributes": ["user_name", "user_id"]

}

}

D.

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_name} "],

"dynamodb:Attributes": ["username", "userid"]

}

}

Discussion
Question 17

A developer created an AWS Lambda function to process data in an application. The function pulls large objects from an Amazon S3 bucket, processes the data, and loads the processed data into a second S3 bucket. Application users have reported slow response times. The developer checks the logs and finds that Lambda function invocations run much slower than expected. The function itself is simple and has a small deployment package. The function initializes quickly. The developer needs to improve the performance of the application. Which solution will meet this requirement with the LEAST operational overhead?

Options:

A.

Store the data in an Amazon EFS file system. Mount the file system to a local directory in the function.

B.

Create an Amazon EventBridge rule to schedule invocations of the function every minute.

C.

Configure the function to use ephemeral storage. Upload the objects and process data in the /tmp directory.

D.

Create a Lambda layer to package the function dependencies. Add the layer to the function.

Discussion
Question 18

A company runs a web application on Amazon EC2 instances behind an Application Load Balancer. The application uses Amazon DynamoDB as its database. The company wants to ensure high performance for reads and writes.

Which solution will meet these requirements MOST cost-effectively?

Options:

A.

Configure auto-scaling for the DynamoDB table with a target utilization of 70%. Set the minimum and maximum capacity units based on the expected workload.

B.

Use DynamoDB on-demand capacity mode for the table. Specify a maximum throughput higher than the expected peak read and write capacity units.

C.

Use DynamoDB provisioned throughput mode for the table. Create an Amazon CloudWatch alarm on the ThrottledRequests metric. Invoke an AWS Lambda function to increase provisioned capacity.

D.

Create an Amazon DynamoDB Accelerator (DAX) cluster. Configure the application to use the DAX endpoint.

Discussion
Question 19

An ecommerce company is planning to migrate an on-premises Microsoft SQL Server database to the AWS Cloud. The company needs to migrate the database to SQL Server Always On availability groups. The cloud-based solution must be highly available.

Which solution will meet these requirements?

Options:

A.

Deploy three Amazon EC2 instances with SQL Server across three Availability Zones. Attach one Amazon Elastic Block Store (Amazon EBS) volume to the EC2 instances.

B.

Migrate the database to Amazon RDS for SQL Server. Configure a Multi-AZ deployment and read replicas.

C.

Deploy three Amazon EC2 instances with SQL Server across three Availability Zones. Use Amazon FSx for Windows File Server as the storage tier.

D.

Deploy three Amazon EC2 instances with SQL Server across three Availability Zones. Use Amazon S3 as the storage tier.

Discussion
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