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The Amazon DVA-C02 exam consists of multiple-choice and multiple-answer questions that cover a wide range of topics, including AWS core services, security, database and storage, development and deployment, and troubleshooting. DVA-C02 Exam is designed to evaluate the candidate's knowledge and skills in developing and deploying cloud-based applications on the AWS platform.

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The DVA-C02 exam measures the candidate's knowledge in various aspects of AWS development, including AWS core services, AWS security, serverless applications, and deploying and managing AWS services. DVA-C02 Exam consists of 65 multiple-choice and multiple-response questions, and the candidate has 130 minutes to complete the exam.

Amazon AWS Certified Developer - Associate Sample Questions (Q123-Q128):

NEW QUESTION # 123
A developer is deploying a new application to Amazon Elastic Container Service (Amazon ECS). The developer needs to securely store and retrieve different types of variables. These variables include authentication information for a remote API, the URL for the API, and credentials. The authentication information and API URL must be available to all current and future deployed versions of the application across development, testing, and production environments.
How should the developer retrieve the variables with the FEWEST application changes?

A. Update the application to retrieve the variables from an encrypted file that is stored with the application.
Store the API URL and credentials in unique files for each environment.
B. Update the application to retrieve the variables from AWS Systems Manager Parameter Store. Use unique paths in Parameter Store for each variable in each environment. Store the credentials in AWS Secrets Manager in each environment.
C. Update the application to retrieve the variables from each of the deployed environments. Define the authentication information and API URL in the ECS task definition as unique names during the deployment process.
D. Update the application to retrieve the variables from AWS Key Management Service (AWS KMS).
Store the API URL and credentials as unique keys for each environment.

Answer: B

Explanation:
AWS Systems Manager Parameter Store is a service that provides secure, hierarchical storage for configuration data management and secrets management. The developer can update the application to retrieve the variables from Parameter Store by using the AWS SDK or the AWS CLI. The developer can use unique paths in Parameter Store for each variable in each environment, such as /dev/api-url, /test/api-url, and /prod
/api-url. The developer can also store the credentials in AWS Secrets Manager, which is integrated with Parameter Store and provides additional features such as automatic rotation and encryption.
References:
* [What Is AWS Systems Manager? - AWS Systems Manager]
* [Parameter Store - AWS Systems Manager]
* [What Is AWS Secrets Manager? - AWS Secrets Manager]

NEW QUESTION # 124
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. Use a multi-AZ Amazon RDS deployment. Modify the code so that queries access the secondary RDS instance.
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. 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.
D. Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.

Answer: D

Explanation:
https://aws.amazon.com/rds/features/read-replicas/

NEW QUESTION # 125
A developer is creating an AWS CloudFormation stack. The stack contains IAM resources with custom names. When the developer tries to deploy the stack, they receive an InsufficientCapabilities error.
What should the developer do to resolve this issue?

A. Specify the CAPABILITY_AUTO_EXPAND capability in the CloudFormation stack.
B. Specify the CAPABILITY_IAM capability in the CloudFormation stack.
C. Specify the CAPABILITY_NAMED_IAM capability in the CloudFormation stack.
D. Use an administrators role to deploy IAM resources with CloudFormation.

Answer: C

Explanation:
If you have IAM resources with custom names, you must specify CAPABILITY_NAMED_IAM.
https://docs.aws.amazon.com/AWSCloudFormation/latest/APIReference/API_CreateStack.html

NEW QUESTION # 126
A company is using the AWS Serverless Application Model (AWS SAM) to develop a social media application. A developer needs a quick way to test AWS Lambda functions locally by using test event payloads. The developer needs the structure of these test event payloads to match the actual events that AWS services create.
Which solution will meet these requirements with the LEAST development effort?

A. Create shareable test Lambda events. Use these test Lambda events for local testing.
B. Store manually created test event payloads locally. Use the sam local invoke command with the file path to the payloads.
C. Store manually created test event payloads in an Amazon S3 bucket. Use the sam local invoke command with the S3 path to the payloads.
D. Use the sam local generate-event command to create test payloads for local testing.

Answer: D

Explanation:
Using the sam local generate-event command is the best solution because the sam local generate-event command automatically generates event payloads that match the structure of real AWS service events. It simplifies testing by providing predefined events for a variety of AWS services and does not require the developer to manually create or store test payloads. This solution requires the least development effort and matches the requirement to test Lambda functions locally with accurate event payloads.

NEW QUESTION # 127
An application is real-time processing millions of events that are received through an API.
What service could be used to allow multiple consumers to process the data concurrently and MOST cost-effectively?

A. Amazon Kinesis Firehose
B. Amazon SNS with fanout to an SQS queue for each application
C. Amazon SNS with fanout to an SQS FIFO (first-in, first-out) queue for each application
D. Amazon Kinesis Data Streams

Answer: D

Explanation:
Amazon Kinesis Data Streams is designed for real-time data streaming and allows multiple consumers to process data concurrently and in real-time. It can handle millions of events and provides a scalable and cost-effective solution for handling high-throughput data streams.

NEW QUESTION # 128
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