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Amazon DVA-C02 Certification Exam is ideal for developers who are already familiar with AWS services and want to enhance their skills in designing and developing AWS applications. AWS Certified Developer - Associate certification validates the knowledge and skills required to build and deploy cloud-based applications using AWS services such as AWS Lambda, Amazon DynamoDB, Amazon S3, and more.

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Amazon DVA-C02 (AWS Certified Developer - Associate) Exam is a certification exam designed for individuals who want to validate their skills and knowledge in developing and deploying applications on the Amazon Web Services (AWS) platform. AWS is a cloud-based platform that offers a wide range of services such as computing power, storage, and databases, among others. The Amazon DVA-C02 Exam Tests an individual's ability to design, develop, and deploy cloud-based applications using AWS services.

Amazon AWS Certified Developer - Associate Sample Questions (Q872-Q877):

NEW QUESTION # 872
A developer wants to expand an application to run in multiple AWS Regions. The developer wants to copy Amazon Machine Images (AMIs) with the latest changes and create a new application stack in the destination Region. According to company requirements, all AMIs must be encrypted in all Regions. However, not all the AMIs that the company uses are encrypted.
How can the developer expand the application to run in the destination Region while meeting the encryption requirement?

A. Copy the unencrypted AMIs to the destination Region. Enable encryption by default in the destination Region.
B. Create new AMIs, and specify encryption parameters. Copy the encrypted AMIs to the destination Region. Delete the unencrypted AMIs.
C. Use AWS Key Management Service (AWS KMS) to enable encryption on the unencrypted AMIs.
Copy the encrypted AMIs to the destination Region.
D. Use AWS Certificate Manager (ACM) to enable encryption on the unencrypted AMIs. Copy the encrypted AMIs to the destination Region.

Answer: B

Explanation:
Amazon Machine Images (AMIs) are encrypted snapshots of EC2 instances that can be used to launch new instances. The developer can create new AMIs from the existing instances and specify encryption parameters.
The developer can copy the encrypted AMIs to the destination Region and use them to create a new application stack. The developer can delete the unencrypted AMIs after the encryption process is complete.
This solution will meet the encryption requirement and allow the developer to expand the application to run in the destination Region.

NEW QUESTION # 873
A company uses Amazon DynamoDB as a data store for its order management system. The company frontend application stores orders in a DynamoDB table. The DynamoDB table is configured to send change events to a DynamoDB stream. The company uses an AWS Lambda function to log and process the incoming orders based on data from the DynamoDB stream.
An operational review reveals that the order quantity of incoming orders is sometimes set to 0. A developer needs to create a dashboard that will show how many unique customers this problem affects each day.
What should the developer do to implement the dashboard?

A. Turn on custom Amazon CloudWatch metrics for the DynamoDB stream of the DynamoOB table. Create a CloudWatch alarm that groups the number of unique customers for orders with order quantity equal to 0 in 1-day periods. Add the CloudWatch alarm to a CloudWatch dashboard.
B. Grant the Lambda function's execution role permissions to upload logs to Amazon CloudWatch Logs. Implement a CloudWatch Logs Insights query that selects the number of unique customers for orders with order quantity equal to 0 and groups the results in 1-day periods. Add the CloudWatch Logs Insights query to a CloudWatch dashboard.
C. Configure the Lambda function to send events to Amazon EventBridge. Create an EventBridge rule that groups the number of unique customers for orders with order quantity equal to 0 in 1-day periods. Add a CloudWatch dashboard as the target of the rule.
D. Use Amazon Athena to query AWS CtoudTrail API logs for API calls. Implement an Athena query that selects the number of unique customers for orders with order quantity equal to 0 and groups the results in 1-day periods. Add the Athena query to an Amazon CloudWatch dashboard.

Answer: B

NEW QUESTION # 874
A developer published a change to a new version of an AWS Lambda function. To test the change, the developer must route 50% of the traffic to the new version and 60% of the traffic to the current version.
What is the MOST operationally efficient way to meet this requirement?

A. Create a Lambda function alias. Set the weight to 50% for the current version and 50% for the new version. Set the event source mappings for the Lambda function to point to the alias.
B. Create an Amazon API Gateway API with a POST method that is integrated with the Lambda function. Add a stage variable that includes the version of the Lambda function. Add a canary release that will override the version variable 50% of the time. Deploy and test the Lambda function through the API Gateway stage.
C. Create two Amazon Route 53 records that use a simple routing policy to route traffic to the different versions of the Lambda function. Create another Route 53 record that uses a weighted routing policy to route 50% of the traffic to each simple routing record. Test the Lambda function by using the weighted routing record.
D. Update the event source mappings for the Lambda function. In the mappings, set the weight to
50% for the current version and 50% for the new version.

Answer: A

NEW QUESTION # 875
A stock trading company is developing a mobile app that provides near real-time market data and historical trading analytics to thousands of professional traders who make trades concurrently. The app needs to provide market data to traders in under 100 milliseconds. Historical analytics charts can take 2- 3 seconds to generate.
The app needs to be highly available and handle market events that cause sudden spikes in trading activity.
Some trades involve messages that are over 1 MB in size.
The company must provide equal market access to all traders. The company must ensure that all traders experience the same performance when they use the app.
Which solution will meet these requirements?

A. Use Amazon ElastiCache Redis OSS in cluster mode and include read replicas. Implement write- through caching for market data updates and lazy loading with a TTL for analytics results.
B. Store all data in Amazon DynamoDB by using DynamoDB Accelerator (DAX). Enable DynamoDB global tables for cross-Region replication.
C. Implement client-side caching by using browser local storage. Use Amazon CloudFront to cache static content.
D. Deploy Amazon ElastiCache Redis OSS in single-node mode. Implement a cache-aside pattern with periodic bulk updates.

Answer: A

Explanation:
The correct answer is A because the workload needs shared, low-latency, highly available caching for all traders. ElastiCache Redis OSS in cluster mode distributes data across shards and supports read replicas, which improves read scalability and protects against node failure. Write-through caching keeps near real-time market data consistent in the cache as updates occur, giving all traders access to the same fresh data path instead of relying on device-local caches. Lazy loading with TTL is appropriate for historical analytics because those results can tolerate a few seconds of generation time and can be cached after first access. DynamoDB with DAX is weaker here because DynamoDB items have a 400 KB maximum size, while the scenario includes messages over 1 MB. Single-node Redis is not highly available.

NEW QUESTION # 876
A developer compiles an AWS Lambda function and packages the result as a .zip file. The developer uses the Functions page on the Lambda console to attempt to upload the local packaged .zip file. When pushing the package to Lambda, the console returns the following error:

Which solutions can the developer use to publish the code? (Select TWO.)

A. Repackage the Lambda function as a Docker container image. Upload the image to Amazon Elastic Container Registry {Amazon ECR). Create a new Lambda function by using the Lambda console.
Reference the image that is deployed to Amazon ECR.
B. Sign the .zip file digitally. Create a new Lambda function by using the Lambda console. Update the configuration of the new Lambda function to include the Amazon Resource Name (ARN) of the code signing configuration.
C. Upload the package to Amazon S3. Use the Functions page on the Lambda console to upload the package from the S3 location.
D. Use the update-function-code AWS CLI command. Pass the -publish parameter.
E. Create an AWS Support ticket to increase the maximum package size.

Answer: A,C

NEW QUESTION # 877
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