Verified DVA-C01 exam dumps Q&As with Correct 610 Questions and Answers
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The Amazon DVA-C01 (AWS Certified Developer Associate) Certification Exam is a sought-after certification for developers who work with Amazon Web Services (AWS). This certification is designed to validate the skills and knowledge needed to develop and maintain applications on AWS. AWS Certified Developer Associate certification is a key credential for professionals who want to demonstrate their expertise in cloud computing.
To prepare for the Amazon DVA-C01 exam, candidates should have a strong understanding of AWS services such as AWS Elastic Beanstalk, AWS Lambda, AWS DynamoDB, and AWS CloudFormation. Candidates should also be familiar with AWS Identity and Access Management (IAM) and AWS Security services. There are several resources available to help candidates prepare for the exam, including online courses, study guides, and practice exams.
NEW QUESTION # 225
When using a large Scan operation in DynamoDB, what technique can be used to minimize the impact of a scan on a table's provisioned throughput?
- A. Define a range index on the table
- B. Set a smaller page size for the scan
- C. Prewarm the table by updating all items
- D. Use parallel scans
Answer: B
Explanation:
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-query-scan.html
Because a Scan operation reads an entire page (by default, 1 MB), you can reduce the impact of the scan operation by setting a smaller page size. The Scan operation provides a Limit parameter that you can use to set the page size for your request. Each Scan or Query request that has a smaller page size uses fewer read operations and creates a "pause" between each request. For example, if each item is 4 KB and you set the page size to 40 items, then a Query request would consume only 40 strongly consistent read operations or 20 eventually consistent read operations. A larger number of smaller Scan or Query operations would allow your other critical requests to succeed without throttling.
NEW QUESTION # 226
When writing a Lambda function, what is the benefit of instantiating AWS clients outside the scope of the handler?
- A. Creating a new instance per invocation
- B. Better error handling
- C. Taking advantage of connection re-use
- D. Legibility and stylistic convention
Answer: C
NEW QUESTION # 227
The Developer for a retail company must integrate a fraud detection solution into the order processing solution. The fraud detection solution takes between ten and thirty minutes to verify an order. At peak, the web site can receive one hundred orders per minute.
What is the most scalable method to add the fraud detection solution to the order processing pipeline?
- A. Add all new orders to an Amazon Kinesis Stream. Subscribe a Lambda function to automatically read batches of records from the Kinesis Stream. The Lambda function includes the fraud detection software and will update the order with a pass or fail status.
- B. Add all new orders to an Amazon SQS queue. Configure a fleet of 10 EC2 instances spanning multiple AZs with the fraud detection solution installed on them to pull orders from this queue. Update the order with a pass or fails status.
- C. Add all new orders to an SQS queue. Configure an Auto Scaling group that uses the queue depth metric as its unit of scale to launch a dynamically-sized fleet of EC2 instances spanning multiple AZs with the fraud detection solution installed on them to pull orders from this queue. Update the order with a pass or fails status.
- D. Write all new orders to Amazon DynamoDB. Configure DynamoDB Streams to include all new orders.
Subscribe a Lambda function to automatically read batches of records from the Kinesis Stream. The Lambda function includes the fraud detection software and will update the order with a pass or fail status.
Answer: C
NEW QUESTION # 228
An application under development is required to store hundreds of video files. The data must be encrypted within the application prior to storage, with a unique key for each video file.
How should the Developer code the application?
- A. Use a cryptography library to generate an encryption key for the application. Use the encryption key to encrypt the data. Store the encrypted data.
- B. Use the KMS Encrypt API to encrypt the data. Store the encrypted data key and data.
- C. Use the KMS GenerateDataKey API to get a data key. Encrypt the data with the data key. Store the encrypted data key and data.
- D. Upload the data to an S3 bucket using server side-encryption with an AWS KMS key.
Answer: C
Explanation:
https://docs.aws.amazon.com/kms/latest/APIReference/API_GenerateDataKey.html
NEW QUESTION # 229
A company is using Amazon RDS MySQL instances for its application database tier and Apache Tomcat servers for its web tier. Most of the database queries from web applications are repeated read requests.
Use of which AWS service would increase in performance by adding in-memory store for repeated read queries?
- A. Amazon RDS Multi-AZ
- B. Amazon RDS read replica
- C. Amazon SQS
- D. Amazon ElastiCache
Answer: D
NEW QUESTION # 230
An application is designed to use Amazon SQS to manage messages from many independent senders. Each sender's messages must be processed in the order they are received.
Which SQS feature should be implemented by the Developer?
- A. Enable MessageDeduplicationIds on the SQS queue
- B. Configure each sender with a unique MessageGroupId
- C. Configure each message with unique MessageGroupIds.
- D. Enable ContentBasedDeduplication on the SQS queue
Answer: B
NEW QUESTION # 231
Which of the following services are included at no additional cost with the use of the AWS platform? Choose 2 answers
- A. Auto Scaling
- B. Simple Storage Service
- C. Elastic Compute Cloud
- D. Simple Workflow Service
- E. CloudFormation
- F. Elastic Load Balancing
Answer: A,E
NEW QUESTION # 232
A company has developed a new serverless application using AWS Lambda functions that will be deployed using the AWS Serverless Application Model (AWS SAM) CLI Which step should the developer complete prior to deploying the application?
- A. Create the application environment using the eb create my-env command.
- B. Bundle the serverless application using a SAM package
- C. Compress the application to a zip file and upload it into AWS Lambda
- D. Test the new AWS Lambda function by first tracing it in AWS X-Ray.
Answer: D
NEW QUESTION # 233
An application stores images in an S3 bucket. Amazon S3 event notifications are used to trigger a Lambda function that resizes the images. Processing each image takes less than a second.
How will AWS Lambda handle the additional traffic?
- A. Lambda will scale out to execute the requests concurrently.
- B. Lambda will process multiple images in a single execution.
- C. Lambda will add more compute to each execution to reduce processing time.
- D. Lambda will handle the requests sequentially in the order received.
Answer: A
NEW QUESTION # 234
An organization must store thousands of sensitive audio and video files in an Amazon S3 bucket.
Organizational security policies require that all data written to this bucket be encrypted.
How can compliance with this policy be ensured?
- A. Configure an Amazon S3 bucket policy to prevent the upload of objects that do not contain the x-amzserver-side-encryption header.
- B. Use AWS Lambda to send notifications to the security team if unencrypted objects are pun in the bucket.
- C. Create an Amazon CloudWatch event rule to verify that all objects stored in the Amazon S3 bucket are encrypted.
- D. Configure an Amazon S3 bucket policy to prevent the upload of objects that contain the x-amz-server-sideencryption header.
Answer: A
NEW QUESTION # 235
A developer has built an application running on AWS Lambda using AWS Serverless Application Model (AWS SAM).
What is the correct sequence of steps to successfully deploy the application?
- A. 1. Build the SAM template locally.
2. Deploy the SAM template from Amazon S3.
3. Package the SAM template for use. - B. 1. Build the SAM template locally.
2 Package the SAM template from AWS CodeCommit. - C. 1. Build the SAM template in Amazon EC2.
2. Package the SAM template to Amazon EBS storage.
3. Deploy the SAM template from Amazon EBS. - D. 1. Build the SAM template locally.
2. Package the SAM template onto Amazon S3.
3. Deploy the SAM template from Amazon S3.
Answer: D
NEW QUESTION # 236
Which of the following platforms are supported by Elastic Beanstalk? Choose 2 answers
- A. Jetty
- B. IBM Websphere
- C. .NET
- D. Oracle JBoss
- E. Apache Tomcat
Answer: C,E
Explanation:
Explanation
https://docs.aws.amazon.com/elasticbeanstalk/latest/platforms/platforms-supported.html
NEW QUESTION # 237
A Developer is trying to deploy a serverless application using AWS CodeDeploy. The application was updated and needs to be redeployed.
What file does the Developer need to update to push that change through CodeDeploy?
- A. ebextensions.config
- B. buildspec.yml
- C. dockerrun.aws.json
- D. appspec.yml
Answer: D
NEW QUESTION # 238
A developer has created a Node js web application on a local development machine. The developer wants to use AWS technology to host the website. The developer needs a solution that requires the least possible operational overhead and no code changes.
Which AWS service should the developer use to meet these requirements?
- A. AWS Lambda
- B. Amazon Elastic Kubernetes Service (Amazon EKS)
- C. AWS Elastic Beanstalk
- D. Amazon EC2
Answer: A
NEW QUESTION # 239
A developer must ensure that the IAM credentials used by an application in Amazon EC2 are not misused or compromised What should the developer use to keep user credentials secure?
- A. Command line options
- B. AWS credentials file
- C. Environment variables
- D. Instance profile credentials
Answer: D
NEW QUESTION # 240
A company s website runs on an Amazon EC2 instance and uses Auto Scale the environment during peak times Website users across the world are experiencing high to sea latency due to static content on the EC2 instance, even during non-peak hours.
Which combination of steps will resolve the latency issue? (Select TWO )
- A. Host the application code on AWS Lambda
- B. Double the Auto Scaling group's maximum number of servers.
- C. Create an Amazon CloudFront distribution to cache the static content
- D. Scale vertically by resizing the EC2 instances
- E. Store the application's static content in Amazon S3
Answer: D,E
NEW QUESTION # 241
A Developer created configuration specifications for an AWS Elastic Beanstalk application in a file named healthcheckurl.yaml in the .ebextensions/directory of their application source bundle. The file contains the
following:
After the application launches, the health check is not being run on the correct path, event though it is valid.
What can be done to correct this configuration file?
- A. Change the configuration section from options_settings to resources.
- B. Convert the file to JSON format.
- C. Rename the file to a .config extension.
- D. Change the namespace of the option settings to a cusom namespace.
Answer: A
Explanation:
Reference:
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/ebextensions.html
You can add AWS Elastic Beanstalk configuration files (.ebextensions) to your web application's source code to configure your environment and customize the AWS resources that it contains. Configuration files are YAML- or JSON-formatted documents with a .config file extension that you place in a folder named .ebextensions and deploy in your application source bundle. https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/ebextensions.html
NEW QUESTION # 242
A Development team has pushed out 10 applications running on several Amazon EC2 instances. The Operations team is asking for a graphical representation of one key performance metric for each application. These metrics should be available on one screen for easy monitoring.
Which steps should the Developer take to accomplish this using Amazon CloudWatch?
- A. Create a custom alarm with a unique metric name for each application.
- B. Create a custom event with a unique metric name for each application.
- C. Create a custom dimension with a unique metric name for each application.
- D. Create a custom namespace with a unique metric name for each application.
Answer: D
Explanation:
https://aws.amazon.com/premiumsupport/knowledge-center/cloudwatch-custom-metrics/
NEW QUESTION # 243
A developer is migrating a legacy monolithic application to AWS and wants to convert the application's internal processes to microservices The application's internal processes communicate through internal asynchronous messaging Occasionally, messages need to be reprocessed by multiple microservices How should the developer migrate the application's internal messaging to AWS to meet these requirements?
- A. Use Amazon Simple Queue Service (Amazon SQS) queues to communicate messages between the microservices
- B. Use Amazon API Gateway to provide WebSocket APIs between the microservices.
- C. Use Amazon Kinesis Data Streams to communicate messages between the microservices
- D. Use Amazon API Gateway to provide REST interfaces between the microservices
Answer: A
NEW QUESTION # 244
A developer is using Amazon S3 as the event source that invokes a Lambda function when new objects are created in the bucket The event source mapping Information Is stored in the bucket notification configuration The developer is working with different versions of the Lambda function, and has a constant need to update notification configuration so that Amazon S3 invokes the correct version What is the MOST efficient and effective way to achieve mapping Between the S3 event and Lambda?
- A. Use Lambda environment variables
- B. Use a different Lambda trigger
- C. Use Lambda tags.
- D. Use a Lambda alias
Answer: D
NEW QUESTION # 245
An organization is using Amazon CloudFront to ensure that its users experience low-latency access to its web application. The organization has identified a need to encrypt all traffic between users and CloudFront, and all traffic between CloudFront and the web application.
How can these requirements be met? (Choose two.)
- A. Use AWS KMS to encrypt traffic between CloudFront and the web application.
- B. Set the Origin's HTTP Port to 443.
- C. Set the Viewer Protocol Policy to "HTTPS Only" or "Redirect HTTP to HTTPS".
- D. Set the Origin Protocol Policy to "HTTPS Only".
- E. Enable the CloudFront option Restrict Viewer Access.
Answer: C,D
Explanation:
Explanation
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/using-https-viewers-to-cloudfront.html
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/using-https-cloudfront-to-custom-origi
NEW QUESTION # 246
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To prepare for the DVA-C01 exam, candidates are recommended to have at least one year of experience in developing and maintaining applications on AWS, as well as a strong understanding of programming languages such as Python, Java, and Node.js. Additionally, candidates should have a good understanding of AWS architecture and services, including AWS Elastic Beanstalk, AWS CloudFormation, and Amazon RDS.
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