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The AWS Certified Developer - Associate certification exam, also known as Amazon DVA-C02, is designed for professionals who want to demonstrate their expertise in developing and deploying AWS applications. DVA-C02 Exam Tests a candidate's ability to write code using AWS services, design and deploy scalable and highly available systems, and troubleshoot common issues.

Amazon AWS Certified Developer - Associate Sample Questions (Q189-Q194):

NEW QUESTION # 189
A developer is building a microservice that uses AWS Lambda to process messages from an Amazon Simple Queue Service (Amazon SQS) standard queue. The Lambda function calls external APIs to enrich the SQS message data before loading the data into an Amazon Redshift data warehouse. The SQS queue must handle a maximum of 1,000 messages per second.
During initial testing, the Lambda function repeatedly inserted duplicate data into the Amazon Redshift table. The duplicate data led to a problem with data analysis. All duplicate messages were submitted to the queue within 1 minute of each other.
How should the developer resolve this issue?

A. Use Lambda's temporary storage to keep track of processed message identifiers
B. Reduce the maximum Lambda concurrency that the SQS queue can invoke.
C. Create an SQS FIFO queue. Enable message deduplication on the SQS FIFO queue.
D. Configure a message group ID for every sent message. Enable message deduplication on the SQS standard queue.

Answer: C

NEW QUESTION # 190
A developer has written the following IAM policy to provide access to an Amazon S3 bucket:

Which access does the policy allow regarding the s3:GetObject and s3:PutObject actions?

A. Access on all buckets except the "DOC-EXAMPLE-BUCKET" bucket
B. Access on all objects in the "DOC-EXAMPLE-BUCKET" bucket along with access to all S3 actions for objects in the "DOC-EXAMPLE-BUCKET" bucket that start with "secrets"
C. Access on all objects in the "DOC-EXAMPLE-BUCKET" bucket except on objects that start with
"secrets"
D. Access on all buckets that start with "DOC-EXAMPLE-BUCKET" except the
"DOC-EXAMPLE-BUCKET/secrets" bucket

Answer: C

Explanation:
Explanation
The IAM policy shown in the image is a resource-based policy that grants or denies access to an S3 bucket based on certain conditions. The first statement allows access to any S3 action on any object in the
"DOC-EXAMPLE-BUCKET" bucket when the request is made over HTTPS (the value of aws:SecureTransport is true). The second statement denies access to the s3:GetObject and s3:PutObject actions on any object in the "DOC-EXAMPLE-BUCKET/secrets" prefix when the request is made over HTTP (the value of aws:SecureTransport is false). Therefore, the policy allows access on all objects in the
"DOC-EXAMPLE-BUCKET" bucket except on objects that start with "secrets". Reference: Using IAM policies for Amazon S3

NEW QUESTION # 191
A developer is working on an AWS Lambda function that accesses Amazon DynamoDB. The Lambda function must retrieve an item and update some of its attributes, or create the item if it does not exist. The Lambda function has access to the primary key.
Which IAM permissions should the developer request for the Lambda function to achieve this functionality?

A. dynamodb:UpdateItem
dynamodb:GetItem
dynamodb:PutItem
B. dynamodb:DeleleItem
dynamodb:GetItem
dynamodb:PutItem
C. dynamodb:UpdateItem
dynamodb:GetItem
dynamodb:DescribeTable
D. dynamodb:GetRecords
dynamodb:PutItem
dynamodb:UpdateTable

Answer: A

Explanation:
dynamodb:GetItem: This permission allows the Lambda function to retrieve an item from DynamoDB.
dynamodb:UpdateItem: This permission allows the Lambda function to update the attributes of an item in DynamoDB.
dynamodb:PutItem: This permission allows the Lambda function to create a new item if it doesn't already exist in the DynamoDB table.

NEW QUESTION # 192
A developer creates a static website for their department The developer deploys the static assets for the website to an Amazon S3 bucket and serves the assets with Amazon CloudFront The developer uses origin access control (OAC) on the CloudFront distribution to access the S3 bucket The developer notices users can access the root URL and specific pages but cannot access directories without specifying a file name. For example, /products/index.html works, but /products returns an error The developer needs to enable accessing directories without specifying a file name without exposing the S3 bucket publicly.
Which solution will meet these requirements'?

A. Create a CloudFront function that examines the request URL and appends index.html when directories are being accessed Add the function as a viewer request CloudFront function to the CloudFront distribution's behavior.
B. Create a custom error response on the CloudFront distribution with the HTTP error code set to the HTTP 404 Not Found response code and the response page path to /index html Set the HTTP response code to the HTTP 200 OK response code
C. Update the CloudFront distribution's settings to index.html as the default root object is set
D. Update the Amazon S3 bucket settings and enable static website hosting. Specify index html as the Index document Update the S3 bucket policy to enable access. Update the CloudFront distribution's origin to use the S3 website endpoint

Answer: D

Explanation:
* Problem:Directory access without file names fails.
* S3 Static Website Hosting:
* Configuring S3 as a static website enables automatic serving of index.html for directory requests.
* Bucket policies ensure correct access permissions.
* Updating the CloudFront origin simplifies routing.
* Avoiding Public Exposure:The S3 website endpoint allows CloudFront to access content without making the bucket public.

NEW QUESTION # 193
A company's new mobile app uses Amazon API Gateway. As the development team completes a new release of its APIs, a developer must safely and transparently roll out the API change.
What is the SIMPLEST solution for the developer to use for rolling out the new API version to a limited number of users through API Gateway?

A. Implement an Amazon CloudWatch alarm to trigger a rollback if the observed HTTP 500 status code rate exceeds a predetermined threshold.
B. Validate the new API version and promote it to production during the window of lowest expected utilization.
C. Use the canary release deployment option in API Gateway. Direct a percentage of the API traffic using the canarySettings setting.
D. Create a new API in API Gateway. Direct a portion of the traffic to the new API using an Amazon Route 53 weighted routing policy.

Answer: C

NEW QUESTION # 194
......

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Amazon DVA-C02 Practice Exams Free | DVA-C02 Exam Discount Voucher

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Amazon AWS Certified Developer - Associate Sample Questions (Q189-Q194):

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