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The DVA-C02 exam is designed for developers who have a minimum of one year of experience in developing and maintaining AWS-based applications. Candidates should have a good understanding of at least one programming language, such as Python, Java, or C#. They should also have experience in using AWS services, such as AWS Elastic Beanstalk, AWS CloudFormation, AWS CodeCommit, AWS CodePipeline, and AWS CodeBuild.
Amazon DVA-C02 (AWS Certified Developer - Associate) certification exam is designed to validate the skills and knowledge of individuals who have experience in developing and maintaining applications on the AWS platform. AWS Certified Developer - Associate certification is ideal for developers who want to demonstrate their ability to design, deploy, and maintain scalable and reliable applications on AWS. DVA-C02 Exam covers a range of topics, including AWS core services, application development, and security best practices.
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The DVA-C02 Certification Exam consists of 65 multiple-choice and multiple-response questions that are to be completed in 130 minutes. DVA-C02 exam covers a range of topics, including AWS core services, database technologies, security and compliance, and deployment and monitoring. Candidates who pass the DVA-C02 exam demonstrate their ability to develop, deploy, and maintain applications using AWS services in a cost-effective, scalable, and reliable manner. AWS Certified Developer - Associate certification is suitable for developers, DevOps engineers, and solutions architects who want to advance their careers in cloud computing and demonstrate their expertise in AWS.
Amazon AWS Certified Developer - Associate Sample Questions (Q124-Q129):
NEW QUESTION # 124
A developer is writing unit tests tor a new application that will be deployed on AWS.
The developer wants to validate all pull requests with unit tests and merge the code with the main branch only when all tests pass.
The developer stores the code in AWS CodeCommit and sets up AWS CodeBuild to run the unit tests.
The developer creates an AWS Lambda function to start the CodeBuild task.
The developer needs to identify the CodeCommit events in an Amazon EventBridge event that can invoke the Lambda function when a pull request is created or updated.
Which CodeCommit event will meet these requirements?
Answer: C
NEW QUESTION # 125
A developer is building an application that uses an AWS Lambda function to process data. The application requires minimum latency. The Lambda function must have predictable function start times. All setup activities for the execution environment must happen before invocation of the Lambda function.
Which solution will meet these requirements?
- A. Optimize the static initialization code that runs when a new execution environment is prepared for the first time. Decrease and compress the size of the Lambda function package and the imported libraries and dependencies.
- B. Increase the reserved concurrency of the Lambda function to the maximum value for unreserved account concurrency. Run any setup activities manually before the initial invocation of the Lambda function.
- C. Publish a new version of the Lambda function. Configure provisioned concurrency for the Lambda function with the required minimum number of execution environments.
- D. Increase the memory of the Lambda function to the maximum amount. Configure an Amazon EventBridge rule to schedule invocations of the Lambda function every minute to keep the execution environment active.
Answer: C
Explanation:
Provisioned Concurrency ensures that your AWS Lambda function has pre-initialized execution environments ready to handle invocations with minimal latency, which is critical for applications that require predictable function start times and low latency. This removes the cold start problem by ensuring that all the setup activities (such as loading libraries or initializing execution environments) are completed before the function is invoked.
NEW QUESTION # 126
A developer is writing an AWS Lambda function. The developer wants to log key events that occur while the Lambda function runs. The developer wants to include a unique identifier to associate the events with a specific function invocation. The developer adds the following code to the Lambda function:
Which solution will meet this requirement?
- A. Obtain the request identifier from the AWS request ID field in the event object. Configure the application to write logs to a file.
- B. Obtain the request identifier from the AWS request ID field in the event object. Configure the application to write logs to standard output.
- C. Obtain the request identifier from the AWS request ID field in the context object. Configure the application to write logs to standard output.
- D. Obtain the request identifier from the AWS request ID field in the context object. Configure the application to write logs to a file.
Answer: C
Explanation:
https://docs.aws.amazon.com/lambda/latest/dg/nodejs-context.html https://docs.aws.amazon.com/lambda/latest/dg/nodejs-logging.html There is no explicit information for the runtime, the code is written in Node.js.
AWS Lambda is a service that lets developers run code without provisioning or managing servers. The developer can use the AWS request ID field in the context object to obtain a unique identifier for each function invocation. The developer can configure the application to write logs to standard output, which will be captured by Amazon CloudWatch Logs. This solution will meet the requirement of logging key events with a unique identifier.
Reference:
[What Is AWS Lambda? - AWS Lambda]
[AWS Lambda Function Handler in Node.js - AWS Lambda]
[Using Amazon CloudWatch - AWS Lambda]
NEW QUESTION # 127
A company is using an Amazon API Gateway REST API endpoint as a webhook to publish events from an on-premises source control management (SCM) system to Amazon EventBridge. The company has configured an EventBridge rule to listen for the events and to control application deployment in a central AWS account. The company needs to receive the same events across multiple receiver AWS accounts.
How can a developer meet these requirements without changing the configuration of the SCM system?
- A. Deploy the API Gateway REST API to all the required AWS accounts. Use the same custom domain name for all the gateway endpoints so that a single SCM webhook can be used for all events from all accounts.
- B. Deploy the API Gateway REST API to all the receiver AWS accounts. Create as many SCM webhooks as the number of AWS accounts.
- C. Convert the API Gateway type from REST API to HTTP API.
- D. Grant permission to the central AWS account for EventBridge to access the receiver AWS accounts.
Add an EventBridge event bus on the receiver AWS accounts as the targets to the existing EventBridge rule.
Answer: D
NEW QUESTION # 128
A company has installed smart motes in all Its customer locations. The smart meter's measure power usage at
1minute intervals and send the usage readings to a remote endpoint tot collection. The company needs to create an endpoint that will receive the smart meter readings and store the readings in a database. The company wants to store the location ID and timestamp information.
The company wants to give Is customers low-latency access to their current usage and historical usage on demand The company expects demand to increase significantly. The solution must not impact performance or include downtime write seeing.
When solution will meet these requirements MOST cost-effectively?
- A. Store the smart meter readings in an Amazon RDS database. Create an index on the location ID and timestamp columns Use the columns to filter on the customers 'data.
- B. Store the smart motor readings m an Amazon DynamoDB table Croato a composite Key oy using the location ID and timestamp columns. Use the columns to filter on the customers' data.
- C. Store the smart meter readings m Amazon S3 Parton the data by using the location ID and timestamp columns. Use Amazon Athena lo tiler on me customers' data.
- D. Store the smart meter readings in Amazon EastCache for Reds Create a Sorted set key y using the location ID and timestamp columns. Use the columns to filter on the customers' data.
Answer: B
Explanation:
The solution that will meet the requirements most cost-effectively is to store the smart meter readings in an Amazon DynamoDB table. Create a composite key by using the location ID and timestamp columns. Use the columns to filter on the customers' data. This way, the company can leverage the scalability, performance, and low latency of DynamoDB to store and retrieve the smart meter readings. The company can also use the composite key to query the data by location ID and timestamp efficiently. The other options either involve more expensive or less scalable services, or do not provide low-latency access to the current usage.
NEW QUESTION # 129
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