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Amazon DVA-C02 Exam Overview:

Certification Vendor:	Amazon Web Services (AWS)
Exam Name:	AWS Certified Developer – Associate (DVA-C02)
Exam Number:	DVA-C02
Certificate Validity Period:	3 years
Exam Format:	Multiple choice, Multiple response
Available Languages:	Korean, English, Spanish (Latin America), Portuguese (Brazil), Japanese, Traditional Chinese, Simplified Chinese, French, German
Passing Score:	720 (scaled score)
Real Exam Qty:	65
Exam Duration:	130 minutes
Related Certifications:	AWS Certified DevOps Engineer – Professional AWS Certified Solutions Architect – Associate AWS Certified Cloud Practitioner
Exam Price:	USD 150
Recommended Training:	AWS Skill Builder – Developer Learning Plan AWS Certified Developer – Associate Exam Guide
Exam Registration:	Pearson VUE AWS Exams AWS Certification Official Registration
Sample Questions:	Amazon DVA-C02 Sample Questions
Exam Way:	Online proctored exam via Pearson VUE or in-person at authorized testing centers
Pre Condition:	No mandatory prerequisites. Recommended: 1+ year of hands-on experience developing and maintaining AWS-based applications.
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 an industry-recognized certification for developers who want to validate their expertise in developing and maintaining applications on the Amazon Web Services (AWS) platform. AWS Certified Developer - Associate certification is designed for professionals who have experience in designing and developing cloud-based applications using AWS services.

Amazon DVA-C02 (AWS Certified Developer - Associate) certification exam is designed to validate the skills and knowledge of individuals who develop and maintain applications on the AWS platform. AWS Certified Developer - Associate certification is intended for developers who have experience in designing and developing cloud-based applications, and who want to demonstrate their expertise in using AWS services to build scalable, reliable, and highly available applications.

Earning the DVA-C02 Certification can open up many career opportunities in AWS development. According to the AWS certification website, certified developers can earn an average salary of $130,000 per year. Additionally, the certification can help you stand out in a competitive job market and demonstrate your commitment to professional development.

Amazon AWS Certified Developer - Associate Sample Questions (Q643-Q648):

NEW QUESTION # 643
A developer is creating an AWS Lambda function that searches for items from an Amazon DynamoDB table that contains customer contact information- The DynamoDB table items have the customer's email_address as the partition key and additional properties such as customer_type, name, and job_tltle.
The Lambda function runs whenever a user types a new character into the customer_type text input The developer wants the search to return partial matches of all the email_address property of a particular customer_type The developer does not want to recreate the DynamoDB table.
What should the developer do to meet these requirements?

A. Add a global secondary index (GSI) to the DynamoDB table with customer_type as the partition key and email_address as the sort key Perform a query operation on the GSI by using the begvns_wth key condition expression With the email_address property
B. Add a local secondary index (LSI) to the DynamoDB table With customer_type as the partition key and email_address as the sort key Perform a query operation on the LSI by using the begins_wlth key condition expression With the email_address property
C. Add a global secondary index (GSI) to the DynamoDB table With ernail_address as the partition key and customer_type as the sort key Perform a query operation on the GSI by using the begins_wtth key condition expression With the email_address property.
D. Add a local secondary Index (LSI) to the DynamoDB table With job_tltle as the partition key and emad_address as the sort key Perform a query operation on the LSI by using the begins_wrth key condition expression With the email_address property

Answer: A

Explanation:
Explanation
By adding a global secondary index (GSI) to the DynamoDB table with customer_type as the partition key and email_address as the sort key, the developer can perform a query operation on the GSI using the Begins_with key condition expression with the email_address property. This will return partial matches of all email_address properties of a specific customer_type.

NEW QUESTION # 644
A developer is creating an application that uses an AWS Lambda function to transform and load data from an Amazon S3 bucket. When the developer tests the application, the developer finds that some invocations of the Lambda function are slower than others.
The developer needs to update the Lambda function to have predictable invocation durations that run with low latency. Any initialization activities, such as loading libraries and instantiating clients, must run during allocation time rather than during actual function invocations.
Which combination of steps will meet these requirements? (Select TWO.)

A. Create a schedule group in Amazon EventBridge Scheduler to invoke the Lambda function.
B. Use the $LATEST version of the Lambda function.
C. Deploy changes, and publish a new version of the Lambda function.
D. Configure reserved concurrency for the Lambda function to have the necessary number of execution environments.
E. Configure provisioned concurrency for the Lambda function to have the necessary number of execution environments.

Answer: D,E

NEW QUESTION # 645
A developer is working on a web application that requires selective activation of specific features.
The developer wants to keep the features hidden from end users until the features are ready for public access.
Which solution will meet these requirements?

A. Store prerelease data in AWS Amplify DataStore. Toggle between hidden and visible states by using Amplify DataStore cloud synchronization.
B. Store prerelease data in an Amazon DynamoDB table. Enable Amazon DynamoDB Streams in the table. Toggle between hidden and visible states by using DynamoDB Streams.
C. Create a feature flag configuration profile in AWS AppSync. Store the feature flag values in the configuration profile. Activate and deactivate feature flags as needed.
D. Create a feature flag configuration profile in AWS AppConfig. Store the feature flag values in the configuration profile. Activate and deactivate feature flags as needed.

Answer: D

Explanation:
https://aws.amazon.com/blogs/mt/using-aws-appconfig-feature-flags/

NEW QUESTION # 646
A developer is writing an application that will process data delivered into an Amazon S3 bucket.
The data is delivered approximately 10 times a day, and the developer expects the data will be processed in less than 1 minute, on average. How can the developer deploy and invoke the application with the lowest cost and lowest latency?

A. Deploy the application as an AWS Lambda function and invoke it with an S3 event notification.
B. Deploy the application as an AWS Lambda function and invoke it with an Amazon CloudWatch scheduled event.
C. Deploy the application onto an Amazon EC2 instance and have it poll the S3 bucket for new objects.
D. Deploy the application as an AWS Lambda function and invoke it with an Amazon CloudWatch alarm triggered by an S3 object upload.

Answer: A

Explanation:
Amazon S3 event notifications can invoke a Lambda function directly when an object is uploaded, which gives the lowest latency because processing starts as soon as the upload event occurs. It is also the lowest-cost option because Lambda runs only when needed, whereas polling with EC2 or using scheduled checks would add unnecessary compute time and delay.

NEW QUESTION # 647
A company has an AWS Step Functions state machine named myStateMachine. The company configured a service role for Step Functions. The developer must ensure that only the myStateMachine state machine can assume the service role.
Which statement should the developer add to the trust policy to meet this requirement?

A. "Condition": { "StringEquals": { "aws:SourceAccount": "111111111111" } }
B. "Condition": { "ArnLike": { "aws:SourceArn":"arn:aws:states:ap-south-1:*:stateMachine:myStateMachine" } }
C. "Condition": { "ArnLike": { "aws:SourceArn":"urn:aws:states:ap-south-1:111111111111:stateMachine:myStateMachine" } }
D. "Condition": { "StringNotEquals": { "aws:SourceArn":"arn:aws:states:ap-south-1:111111111111:stateMachine:myStateMachine" } }

Answer: C

Explanation:
Comprehensive Detailed Explanation with all AWS Reference
Why Option A is Correct:
The ArnLike condition with the specific ARN for myStateMachine ensures that only this state machine can assume the role. The format urn:aws:states is correct for specifying Step Functions resources.
Why Other Options are Incorrect:
Option B: Wildcards (*) in the ARN allow more resources to assume the role, which violates the requirement.
Option C: This condition restricts the account but not the specific state machine.
Option D: A StringNotEquals condition is used to deny specific values, which does not ensure exclusivity for the desired state machine.
AWS Documentation Reference:
IAM Trust Policies for Step Functions

NEW QUESTION # 648
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