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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.

Amazon AWS Certified Developer - Associate Sample Questions (Q181-Q186):

NEW QUESTION # 181
A company is implementing an application on Amazon EC2 instances. The application needs to process incoming transactions. When the application detects a transaction that is not valid, the application must send a chat message to the company's support team. To send the message, the application needs to retrieve the access token to authenticate by using the chat API.
A developer needs to implement a solution to store the access token. The access token must be encrypted at rest and in transit. The access token must also be accessible from other AWS accounts.
Which solution will meet these requirements with the LEAST management overhead?

A. Encrypt the access token by using an AWS Key Management Service (AWS KMS) AWS managed key. Store the access token in an Amazon S3 bucket. Add a bucket policy to the S3 bucket to allow access from other accounts. Update the IAM role of the EC2 instances with permissions to access Amazon S3 and AWS KMS. Retrieve the token from the S3 bucket. Decrypt the token by using AWS KMS on the EC2 instances. Use the decrypted access token to send the massage to the chat.
B. Use an AWS Systems Manager Parameter Store SecureString parameter that uses an AWS Key Management Service (AWS KMS) AWS managed key to store the access token. Add a resource-based policy to the parameter to allow access from other accounts. Update the IAM role of the EC2 instances with permissions to access Parameter Store. Retrieve the token from Parameter Store with the decrypt flag enabled. Use the decrypted access token to send the message to the chat.
C. Encrypt the access token by using an AWS Key Management Service (AWS KMS) customer managed key. Store the access token in an Amazon DynamoDB table. Update the IAM role of the EC2 instances with permissions to access DynamoDB and AWS KMS. Retrieve the token from DynamoDB. Decrypt the token by using AWS KMS on the EC2 instances. Use the decrypted access token to send the message to the chat.
D. Use AWS Secrets Manager with an AWS Key Management Service (AWS KMS) customer managed key to store the access token. Add a resource-based policy to the secret to allow access from other accounts. Update the IAM role of the EC2 instances with permissions to access Secrets Manager. Retrieve the token from Secrets Manager. Use the decrypted access token to send the message to the chat.

Answer: D

Explanation:
https://aws.amazon.com/premiumsupport/knowledge-center/secrets-manager-share-between-accounts/ https://docs.aws.amazon.com/secretsmanager/latest/userguide/auth-and-access_examples_cross.html

NEW QUESTION # 182
A developer is building a serverless application that connects to an Amazon Aurora PostgreSQL database. The serverless application consists of hundreds of AWS Lambda functions. During every Lambda function scale out, a new database connection is made that increases database resource consumption.
The developer needs to decrease the number of connections made to the database. The solution must not impact the scalability of the Lambda functions.
Which solution will meet these requirements?

A. Configure provisioned concurrency for each Lambda function by setting the ProvisionedConcurrentExecutions parameter to 10.
B. Configure reserved concurrency for each Lambda function by setting the ReservedConcurrentExecutions parameter to 10.
C. Use Amazon RDS Proxy to create a connection pool to manage the database connections.
Change the connection string of each Lambda function to reference the proxy.
D. Enable cluster cache management for Aurora PostgreSQL. Change the connection string of each Lambda function to point to cluster cache management.

Answer: C

Explanation:
Amazon RDS Proxy is a solution that allows you to create a connection pool to manage database connections. This can help reduce the number of connections made to the database.

NEW QUESTION # 183
A developer is using AWS Amplify Hosting to build and deploy an application. The developer is receiving an increased number of bug reports from users. The developer wants to add end-to-end testing to the application to eliminate as many bugs as possible before the bugs reach production.
Which solution should the developer implement to meet these requirements?

A. Add a test phase to the amplify.yml build settings for the application.
B. Add a test phase to the aws-exports.js file for the application.
C. Create unit tests in the application. Deploy the unit tests by using the amplify push command in the Amplify CLI.
D. Run the amplify add test command in the Amplify CLI.

Answer: A

NEW QUESTION # 184
A developer has designed an application to store incoming data as JSON files in Amazon S3 objects. Custom business logic in an AWS Lambda function then transforms the objects, and the Lambda function loads the data into an Amazon DynamoDB table. Recently, the workload has experienced sudden and significant changes in traffic. The flow of data to the DynamoDB table is becoming throttled.
The developer needs to implement a solution to eliminate the throttling and load the data into the DynamoDB table more consistently.
Which solution will meet these requirements?

A. Create an alias for the Lambda function. Configure provisioned concurrency for the application to use.
B. Refactor the Lambda function into two functions. Configure one function to store the data in the DynamoDB table. Configure the second function to process the data and update the items after the data is stored in DynamoDB. Create a DynamoDB stream to invoke the second function after the data is
C. Turn on auto scaling for the DynamoDB table. Use Amazon CloudWatch to monitor the table's read and write capacity metrics and to track consumed capacity.
D. Refactor the Lambda function into two functions. Configure one function to transform the data and one function to load the data into the DynamoDB table. Create an Amazon Simple Queue Service (Amazon SQS) queue in between the functions to hold the items as messages and to invoke the second function.

Answer: D

Explanation:
stored.

NEW QUESTION # 185
A company has an application that stores data in Amazon RDS instances. The application periodically experiences surges of high traffic that cause performance problems. During periods of peak traffic, a developer notices a reduction in query speed in all database queries.
The team's technical lead determines that a multi-threaded and scalable caching solution should be used to offload the heavy read traffic. The solution needs to improve performance.
Which solution will meet these requirements with the LEAST complexity?

A. Replicate the data to Amazon DynamoDSet up a DynamoDB Accelerator (DAX) cluster.
B. Use Amazon ElastiCache for Memcached to offload read requests from the main database.
C. Use Amazon ElastiCache for Redis to offload read requests from the main database.
D. Configure the Amazon RDS instances to use Multi-AZ deployment with one standby instance.
Offload read requests from the main database to the standby instance.

Answer: B

Explanation:
Amazon ElastiCache for Memcached is a scalable, multithreaded caching solution that can be used to offload heavy read traffic from Amazon RDS instances. ElastiCache for Memcached is easy to configure and manage, making it a low-effort solution to meet technical lead requirements.

NEW QUESTION # 186
......

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Amazon DVA-C02 Valid Torrent - DVA-C02 Valid Exam Materials

DVA-C02 Valid Exam Materials & DVA-C02 Reliable Learning Materials

Amazon AWS Certified Developer - Associate Sample Questions (Q181-Q186):

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