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Amazon DVA-C02 Exam Overview:

Certification Vendor:	Amazon Web Services (AWS)
Exam Name:	AWS Certified Developer - Associate
Exam Number:	DVA-C02
Available Languages:	English, Korean, Simplified Chinese, Japanese, Portuguese (Brazil), Spanish (Latin America)
Exam Price:	150 USD
Certificate Validity Period:	3 years
Exam Duration:	130 minutes
Related Certifications:	AWS Certified Cloud Practitioner AWS Certified DevOps Engineer - Professional
Passing Score:	720 (scaled score of 100–1,000)
Real Exam Qty:	65 (50 scored, 15 unscored)
Exam Format:	Multiple response, Multiple choice
Sample Questions:	Amazon DVA-C02 Sample Questions
Exam Way:	Pearson VUE testing center or online proctored exam
Pre Condition:	Recommended 1 or more years of hands-on experience in developing and maintaining applications using AWS services. Proficiency in at least one high-level programming language.
Official Syllabus URL:	https://aws.amazon.com/certification/certified-developer-associate/

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Amazon DVA-C02 (AWS Certified Developer - Associate) Certification Exam is a valuable credential for professionals who want to specialize in developing and deploying applications on AWS. DVA-C02 exam covers a range of topics related to AWS development, including core services, application services, security, best practices, and troubleshooting. AWS Certified Developer - Associate certification is recognized globally and can help professionals advance their careers and increase their earning potential.

Amazon AWS Certified Developer - Associate Sample Questions (Q848-Q853):

NEW QUESTION # 848
A developer created a Lambda function for a web application backend. When testing the Lambda function from the AWS Lambda console, the developer can see that the function is being run, but there is no log data being generated in Amazon CloudWatch Logs, even after several minutes.
What could cause this situation?

A. The Lambda function is missing CloudWatch Logs as a source trigger to send log data.
B. The Lambda function does not have any explicit log statements for the log data to send it to CloudWatch Logs.
C. The Lambda function is missing a target CloudWatch Log group.
D. The execution role for the Lambda function is missing permissions to write log data to the CloudWatch Logs.

Answer: D

Explanation:
Even if your function executes, Lambda needs IAM permissions to create log groups/streams and push log events to CloudWatch Logs. Without the AWSLambdaBasicExecutionRole (or equivalent logs:CreateLogGroup, logs:CreateLogStream, and logs:PutLogEvents permissions) on the execution role, no log data will appear.

NEW QUESTION # 849
A company has a web application that contains an Amazon API Gateway REST API. A developer has created an AWS CloudFormation template for the initial deployment of the application. The developer has deployed the application successfully as part of an AWS CodePipeline continuous integration and continuous delivery (CI/CD) process. All resources and methods are available through the deployed stage endpoint.
The CloudFormation template contains the following resource types:
* AWS::ApiGateway::RestApi
* AWS::ApiGateway::Resource
* AWS::ApiGateway::Method
* AWS:ApiGateway::Stage
* AWS::ApiGateway:;Deployment
The developer adds a new resource to the REST API with additional methods and redeploys the template.
CloudFormation reports that the deployment is successful and that the stack is in the UPDATE_COMPLETE state. However, calls to all new methods are returning 404 (Not Found) errors.
What should the developer do to make the new methods available?

A. Specify the disable-rollback option during the update-stack operation.
B. Unset the Cloud Forma lion stack failure options.
C. Add an action to CodePipeline to run the aws cloudfront create-invalidation AWS CLI command.
D. Add an AWS CodeBuild stage lo CodePipeline to run the aws apigateway create-deployment AWS CLI command.

Answer: D

NEW QUESTION # 850
A company wants to use an Amazon CloudFront distribution to deliver a new application. The application will use Lambda@Edge functions and an Amazon DynamoDB table. To comply with regulations, the company must distribute the application to only two AWS Regions.
The company must ensure that read requests from the Lambda@Edge functions to the DynamoDB table always return the most recent version of the data from the table.
Which solution will meet these requirements?

A. Configure the DynamoDB table in a single Region. Configure the Lambda@Edge functions to query the table by using strongly consistent reads.
B. Configure the DynamoDB table in a single Region. Configure the Lambda@Edge functions to query the table by using eventually consistent reads.
C. Configure the DynamoDB table as a global table across two Regions. Create DNS records in Amazon Route 53 for the DynamoDB endpoint in each Region. Configure latency-based routing and health checks on Amazon Route 53 records that resolve to the DynamoDB Regional endpoints. Configure the Lambda@Edge functions to make DynamoDB requests through the DNS records. Query the DynamoDB table with eventually consistent reads.
D. Configure the DynamoDB table as a global table across two Regions. Create DNS records in Amazon Route 53 for the DynamoDB endpoint in each Region. Configure latency-based routing and health checks on Amazon Route 53 records that resolve to the DynamoDB Regional endpoints. Configure the Lambda@Edge functions to make DynamoDB requests through the DNS records. Query the DynamoDB table with strongly consistent reads.

Answer: A

Explanation:
Since the company requires read requests to always return the most recent data and wants to comply with distributing the application to only two Regions, configuring the DynamoDB table in a single Region with strongly consistent reads guarantees the most up-to-date data. DynamoDB strongly consistent reads are only supported within a single Region, so using a single Region table with strong consistency meets the requirement best.

NEW QUESTION # 851
A developer is working on an existing application that uses Amazon DynamoDB as its data store.
The DynamoDB table has the following attributes: partNumber (partition key), vendor (sort key), description, productFamily, and productType. When the developer analyzes the usage patterns, the developer notices that there are application modules that frequently look for a list of products based on the productFamily and productType attributes.
The developer wants to make changes to the application to improve performance of the query operations.
Which solution will meet these requirements?

A. Recreate the table. Add partNumber as the partition key and vendor as the sort key. During table creation, add a local secondary index (LSI) with productFamily as the partition key and productType as the sort key.
B. Create a global secondary index (GSI) with productFamily as the partition key and productType as the sort key.
C. Update the queries to use Scan operations with productFamily as the partition key and productType as the sort key.
D. Create a local secondary index (LSI) with productFamily as the partition key and productType as the sort key.

Answer: B

Explanation:
Create a Global Secondary Index (GSI): The developer should create a new GSI on the DynamoDB table with the productFamily attribute as the partition key and the productType attribute as the sort key. This will allow the application to perform fast queries on these attributes without scanning the entire table.

NEW QUESTION # 852
A company has multiple Amazon VPC endpoints in the same VPC. A developer needs to configure an Amazon S3 bucket policy so users can access an S3 bucket only by using these VPC endpoints.
Which solution will meet these requirements?

A. Create multiple S3 bucket polices by using each VPC endpoint ID that have the aws:SourceVpce value in the StringNotEquals condition.
B. Create a single S3 bucket policy that has the aws:SourceVpc value and in the StringNotEquals condition to use VPC ID.
C. Create a single S3 bucket policy that has multiple aws:sourceVpce value in the StringNotEquals condition. Repeat for all the VPC endpoint IDs.
D. Create a single S3 bucket policy that has the aws:SourceVpce value and in the StringNotEquals condition to use vpce*.

Answer: C

NEW QUESTION # 853
......

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