DVA-C02 EXAM QUESTIONS ANSWERS - RELIABLE DVA-C02 LEARNING MATERIALS

DVA-C02 Exam Questions Answers - Reliable DVA-C02 Learning Materials

DVA-C02 Exam Questions Answers - Reliable DVA-C02 Learning Materials

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To prepare for the Amazon DVA-C02 Exam, candidates can take advantage of a variety of resources provided by AWS, such as online training courses, practice exams, and study guides. AWS also offers instructor-led training courses that provide hands-on experience with AWS services and cover the topics that are tested in the exam.

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Amazon AWS Certified Developer - Associate Sample Questions (Q191-Q196):

NEW QUESTION # 191
A developer has deployed an AWS Lambda function that is subscribed to an Amazon Simple Notification Service {Amazon SNS) topic. The developer must implement a solution to add a record of each Lambda function invocation to an Amazon Simple Queue Service {Amazon SQS) queue.
Which solution will meet this requirement?

  • A. Create code that uses the AWS SDK to call the SQS SendMessage operation to add the invocation details to the SQS queue. Add the code to the end of the Lambda function.
  • B. Configure the SQS queue as a dead-letter queue for the Lambda function.
  • C. Add two asynchronous invocation destinations to the Lambda function: one destination for successful invocations and one destination for failed invocations. Configure the SQS queue as the destination for each type. Create an Amazon CloudWatch alarm based on the DestinationDeliveryFailures metric to catch any message that cannot be delivered.
  • D. Add a single asynchronous invocation destination to the Lambda function to capture successful invocations. Configure the SQS queue as the destination. Create an Amazon CloudWatch alarm based on the DestinationDeliveryFailures metric to catch any message that cannot be delivered.

Answer: D


NEW QUESTION # 192
A developer has a financial application. The application uses AWS Secrets Manager to manage an Amazon RDS for PostgreSQL database's username and password. The developer needs to rotate thepassword while maintaining the application's high availability. Which solution will meet these requirements with LEAST development effort?

  • A. Rotate the secret by using the alternating-users rotation strategy. Update the application with an appropriate retry strategy to handle authentication failures.
  • B. Use the PostgreSQL client to create a new database username and password. Include the new secret values by performing an immediate rotation. Use the AWS CLI to update the RDS database password.
    Perform an immediate rotation of the Secrets Manager secrets.
  • C. Rotate the secret by using multivalue answer rotation. Update the application with an appropriate retry strategy to handle authentication failures.
  • D. Rotate the secret by using the single-user rotation strategy. Update the application with an appropriate retry strategy to handle authentication failures.

Answer: D

Explanation:
Requirement Summary:
* Secrets managed inAWS Secrets Manager
* DB:Amazon RDS for PostgreSQL
* Needautomated password rotation
* Must maintainhigh availability
* Least development effort
Rotation Strategies:
#Single-user rotation strategy
* #Simplest to implement
* The secret containsone set of credentialsused by app and rotation logic
* #Supportsautomated rotation
* AWS providesbuilt-in Lambda rotation templatesfor RDS
A: Alternating-users strategy
* ##More complex
* Requires application toswitch usersduring rotation window
B: Manual secret + CLI rotation
* #Too much manual work
* Not scalable or reliable
C: Multivalue answer rotation
* #Not a valid strategy in this context
* Doesn't apply to Secrets Manager
* Secrets Manager rotation strategies:https://docs.aws.amazon.com/secretsmanager/latest/userguide
/rotating-secrets.html
* RDS PostgreSQL secret rotation:https://docs.aws.amazon.com/secretsmanager/latest/userguide/rotating- secrets_strategies.html#rotating-secrets-single-user


NEW QUESTION # 193
A company hosts a batch processing application on AWS Elastic Beanstalk with instances that run the most recent version of Amazon Linux. The application sorts and processes large datasets. In recent weeks, the application's performance has decreased significantly during a peak period for traffic. A developer suspects that the application issues are related to the memory usage. The developer checks the Elastic Beanstalk console and notices that memory usage is not being tracked.
How should the developer gather more information about the application performance issues?

  • A. Configure an Amazon CloudWatch dashboard to track the memory usage of the instances.
  • B. Configure the Amazon CloudWatch agent to push logs to Amazon CloudWatch Logs by using port 443.
  • C. Configure the Amazon CloudWatch agent to track the memory usage of the instances.
  • D. Configure the Elastic Beanstalk .ebextensions directory to track the memory usage of the instances.

Answer: C


NEW QUESTION # 194
A developer is creating an AWS Lambda function that will generate and export a file. The function requires 100 MB of temporary storage for temporary files while running. These files will not be needed after the function is complete.
How can the developer MOST efficiently handle the temporary files?

  • A. Copy the files to an Amazon S3 bucket with a lifecycle policy to delete the files.
  • B. Store the files in Amazon Elastic Block Store (Amazon EBS) and delete the files at the end of the Lambda function.
  • C. Store the files in the /tmp directory and delete the files at the end of the Lambda function.
  • D. Copy the files to Amazon Elastic File System (Amazon EFS) and delete the files at the end of the Lambda function.

Answer: C

Explanation:
The /tmp directory is a dedicated temporary storage location provided by AWS Lambda for storing temporary files during the execution of the function.
It's cost-effective and efficient because it doesn't involve additional AWS services or storage costs.
AWS Lambda automatically manages the /tmp directory for you, including clearing its contents after the function execution is complete. You don't need to explicitly delete the files; Lambda takes care of it.


NEW QUESTION # 195
A company runs an application on AWS. The application consists of a static website that is hosted on Amazon S3. The application includes Amazon API Gateway APIs that invoke AWS Lambda functions. During a period of high traffic on the application, application users reported that the application was slow at irregular intervals. There were no failed requests.
A developer needs to find the slow executions across all the Lambda functions.
Which solution will meet these requirements?

  • A. Enable AWS X-Ray for all the Lambda functions. Configure an X-Ray insight on a new group that includes all the Lambda functions. After the X-Ray insight has finished processing, review the X- Ray logs.
  • B. Set up AWS Glue to crawl through the logs in Amazon CloudWatch Logs for the Lambda functions. Configure an AWS Glue job to transform the logs into a structured format and to output the logs into Amazon S3. Use the Amazon CloudWatch dashboard to visualize the slowest functions based on the duration.
  • C. Perform a query across all the Lambda function log groups by using Amazon CloudWatch Logs Insights. Filter on type of report and sort descending by Lambda function execution duration.
  • D. Enable AWS CloudTrail Insights on the account where the Lambda functions are running. After CloudTrail Insights has finished processing, review CloudTrail Insights to find the anomalous functions.

Answer: D


NEW QUESTION # 196
......

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