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DVA-C01 Exam Dumps - AWS Certified Developer Associate Exam

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Question # 33

A Developer is creating an Auto Scaling group whose instances need to publish a custom metric to Amazon CloudWatch.

Which method would be the MOST secure way to authenticate a CloudWatch PUT request?

Create an IAM user with PutMetricData permission and put the user credentials in a private repository; have applications pull the credentials as needed.

Create an IAM user with PutMetricData permission, and modify the Auto Scaling launch configuration to inject the user credentials into the instance user data.

Modify the CloudWatch metric policies to allow the PutMetricData permission to instances from the Auto Scaling group.

Create an IAM role with PutMetricData permission and modify the Auto Scaling launching configuration to launch instances using that role.

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Question # 34

The release process workflow of an application requires a manual approval before the code is deployed into the production environment.

What is the BEST way to achieve this using AWS CodePipeline?

Use multiple pipelines to allow approval

Use an approval action in a stage

Disable the stage transition to allow manual approval

Disable a stage just prior the deployment stage

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Question # 35

A company is building an application to track athlete performance using an Amazon DynamoDB table. Each item in the table is identified by a partition key (user_id) and a sort key (sport_name). The table design is shown below:

(Note: Not all table attributes are shown)

A Developer is asked to write a leaderboard application to display the top performers (user_id) based on the score for each sport_name.

What process will allow the Developer to extract results MOST efficiently from the DynamoDB table?

Use a DynamoDB query operation with the key attributes of user_id and sport_name and order the results based on the score attribute.

Create a global secondary index with a partition key of sport_name and a sort key of score, and get the results

Use a DynamoDB scan operation to retrieve scores and user_id based on sport_name, and order the results based on the score attribute.

Create a local secondary index with a primary key of sport_name and a sort key of score and get the results based on the score attribute.

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Question # 36

You are writing to a DynamoDB table and receive the following exception:" ProvisionedThroughputExceededException". though according to your Cloudwatch metrics for the table, you are not exceeding your provisioned throughput.

What could be an explanation for this?

You haven't provisioned enough DynamoDB storage instances

You're exceeding your capacity on a particular Range Key

You're exceeding your capacity on a particular Hash Key

You're exceeding your capacity on a particular Sort Key

You haven't configured DynamoDB Auto Scaling triggers

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Question # 37

A meteorological system monitors 600 temperature gauges, obtaining temperature samples every minute and saving each sample to a DynamoDB table. Each sample involves writing 1K of data and the writes are evenly distributed over time.

How much write throughput is required for the target table?

1 write capacity unit

10 write capacity units

60 write capacity units

600 write capacity units

3600 write capacity units

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Question # 38

An application on AWS is using third-party APIs. The Developer needs to monitor API errors in the code, and wants to receive notifications if failures go above a set threshold value.

How can the Developer achieve these requirements?

Publish a custom metric on Amazon CloudWatch and use Amazon SES for notification.

Use an Amazon CloudWatch API-error metric and use Amazon SNS for notification.

Use an Amazon CloudWatch API-error metric and use Amazon SES for notification.

Publish a custom metric on Amazon CloudWatch and use Amazon SNS for notification.

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Question # 39

Where should an Elastic Beanstalk configuration file named healthcheckur1.config be placed in the application source bundle?

In the root of the application

In the bin folder

In healthcheckur1.config.ebextension under root

In the .ebextensions folder

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Question # 40

A company is developing an application that will run on several Amazon EC2 instances in an Auto Scaling group and can access a database running on Amazon EC2. The application needs to store secrets required to connect to the database. The application must allow for periodic secret rotation, and there should be no changes to the application when a secret changes.

What is the SAFEST way to meet these requirements?

Associate an IAM role to the EC2 instance where the application is running with permission to access the database.

Use AWS Systems Manager Parameter Store with the SecureString data type to store secrets.

Configure the application to store secrets in Amazon S3 object metadata.

Hard code the database secrets in the application code itself.

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