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Amazon AWS Certified Developer - Associate Sample Questions (Q132-Q137):

NEW QUESTION # 132
A developer needs to deploy an application running on AWS Fargate using Amazon ECS. The application has environment variables that must be passed to a container for the application to initialize.
How should the environment variables be passed to the container?

A. Define an array that includes the environment variables under the environment parameter within the task definition.
B. Define an array that includes the environment variables under the entryPoint parameter within the task definition.
C. Define an array that includes the environment variables under the entryPoint parameter within the service definition.
D. Define an array that includes the environment variables under the environment parameter within the service definition.

Answer: A

Explanation:
https://docs.aws.amazon.com/AmazonECS/latest/userguide/task_definition_parameters.html#con tainer_definitions

NEW QUESTION # 133
A company that has large online business uses an Amazon DynamoDB table to store sales data.
The company enabled Amazon DynamoDB Streams on the table. The transaction status of each sale is stored in a TransactionStatus attribute in the table. The value of the TransactionStatus attribute must be either failed, pending, or completed.
The company wants to be notified of failed sales where the السعر attribute is above a specific threshold. A developer needs to set up notification for the failed sales.
Which solution will meet these requirements with the LEAST development effort?

A. Create an Amazon CloudWatch alarm to monitor the DynamoDB Streams sales data. Configure the alarm to publish to an Amazon Simple Notification Service (Amazon SNS) topic if sales fail due when price is above the specified threshold.
B. Create an event source mapping between DynamoDB Streams and an AWS Lambda function.
Use Lambda event filtering to trigger the Lambda function only if sales fail when the price is above the specified threshold. Configure the Lambda function to publish the data to an Amazon Simple Notification Service (Amazon SNS) topic.
C. Create an event source mapping between DynamoDB Streams and an Amazon Simple Notification Service (Amazon SNS) topic. Use event filtering to publish to the SNS topic if sales fail when the price is above the specified threshold.
D. Create an event source mapping between DynamoDB Streams and an AWS Lambda function.
Configure the Lambda function handler code to publish to an Amazon Simple Notification Service (Amazon SNS) topic if sales fail when price is above the specified threshold.

Answer: C

NEW QUESTION # 134
A company is migrating an on-premises database to Amazon RDS for MySQL. The company has read-heavy workloads. The company wants to refactor the code to achieve optimum read performance for queries.
Which solution will meet this requirement with LEAST current and future effort?

A. Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.
B. Use open source replication software to create a copy of the MySQL database on an Amazon EC2 instance. Modify the application code so that queries use the IP address of the EC2 instance.
C. Use a multi-AZ Amazon RDS deployment. Modify the code so that queries access the secondary RDS instance.
D. Use a multi-AZ Amazon RDS deployment. Increase the number of connections that the code makes to the database or increase the connection pool size if a connection pool is in use.

Answer: A

Explanation:
Amazon RDS for MySQL supports read replicas, which are copies of the primary database instance that can handle read-only queries. Read replicas can improve the read performance of the database by offloading the read workload from the primary instance and distributing it across multiple replicas. To use read replicas, the application code needs to be modified to direct read queries to the URL of the read replicas, while write queries still go to the URL of the primary instance. This solution requires less current and future effort than using a multi-AZ deployment, which does not provide read scaling benefits, or using open source replication software, which requires additional configuration and maintenance. Reference: Working with read replicas

NEW QUESTION # 135
A developer manages three AWS accounts. Each account contains an Amazon RDS DB instance in a private subnet. The developer needs to define users in each database in a consistent way.
The developer must ensure that the same users are created and updated later in all three accounts.
Which solution will meet these requirements with the MOST operational efficiency?

A. Implement an AWS Lambda function that creates the users in the database. Provide the function with the details of all three accounts.
B. Create an AWS CloudFormation template. Declare the users in the template. Attach the users to the database. Deploy the template in each account.
C. Write a script that creates the users. Deploy an Amazon EC2 instance in each account to run the script on the databases. Run the script in each account.
D. Create an AWS CloudFormation template that contains a custom resource to create the users in the database. Deploy the template in each account.

Answer: D

NEW QUESTION # 136
A developer has a continuous integration and continuous delivery (CI/CD) pipeline that uses AWS CodeArtifact and AWS CodeBuild. The build artifacts are between 0.5 GB and 1.5 GB in size.
The builds happen frequently and retrieve many dependencies from CodeArtifact each time.
The builds have been slow because of the time it takes to transfer dependencies. The developer needs to improve build performance by reducing the number of dependencies that are retrieved for each build.
Which solution will meet this requirement?

A. Specify an Amazon S3 cache in CodeBuild. Add the S3 cache folder path to the buildspec.yaml file for the build project.
B. Retrieve the buildspec.yaml file directly from CodeArtifact. Add the CodeArtifact repository name to the buildspec.yaml file for the build project.
C. Specify a local cache in CodeBuild. Add the CodeArtifact repository name to the buildspec.yaml file for the build project.
D. Specify a local cache in CodeBuild. Add the cache folder path to the buildspec.yaml file for the build project.

Answer: D

Explanation:
Using a local cache in CodeBuild allows you to cache dependencies locally on the build host, which can significantly reduce the time it takes to retrieve dependencies during subsequent builds.

NEW QUESTION # 137
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