Blog - منصة قلم التعليمية

Michael Johnson Michael Johnson

0 دورة ملتحَق بها • 0 اكتملت الدورة

سيرة شخصية

Exam DVA-C02 Fees, Valid DVA-C02 Exam Format

With our motto "Sincerity and Quality", we will try our best to provide the big-league DVA-C02 exam questions for our valued customers like you. Our company emphasizes the interaction with customers on our DVA-C02 Study Guide. We not only attach great importance to the quality of AWS Certified Developer - Associate exam, but also take the construction of a better after-sale service on our DVA-C02 learning materials into account.

Amazon DVA-C02 (AWS Certified Developer - Associate) exam is a comprehensive certification that validates the skills and knowledge of developers in designing and deploying scalable, highly available, and fault-tolerant applications on AWS. DVA-C02 exam is intended for individuals who have experience in programming and working with AWS services, and it covers a wide range of topics such as AWS core services, security, and architecture best practices.

Amazon DVA-C02 (AWS Certified Developer - Associate) exam is a certification program that is designed to test the skills and knowledge of developers who are interested in building and maintaining applications using the Amazon Web Services (AWS) platform. DVA-C02 exam is intended for individuals who possess a strong understanding of AWS services and have hands-on experience developing and deploying applications on AWS.

>> Exam DVA-C02 Fees <<

Valid Amazon DVA-C02 Exam Format - DVA-C02 Testking Learning Materials

Our Amazon practice examinations provide a wonderful opportunity to pinpoint and overcome mistakes. By overcoming your mistakes before appearing in the real Amazon DVA-C02 test, you can avoid making mistakes in the actual DVA-C02 Exam. These DVA-C02 self-assessment exams show your results, helping you to improve your performance while tracking your progress.

The DVA-C02 certification exam evaluates a candidate's ability to design, develop, and deploy scalable and fault-tolerant applications on AWS. DVA-C02 exam covers a wide range of topics, including AWS compute, storage, database, networking, security, and developer tools. DVA-C02 Exam also tests the candidate's knowledge of AWS services such as AWS Lambda, AWS Elastic Beanstalk, AWS CodePipeline, AWS CloudFormation, and AWS CloudTrail.

Amazon AWS Certified Developer - Associate Sample Questions (Q184-Q189):

NEW QUESTION # 184
An application that is hosted on an Amazon EC2 instance needs access to files that are stored in an Amazon S3 bucket. The application lists the objects that are stored in the S3 bucket and displays a table to the user. During testing, a developer discovers that the application does not show any objects in the list.
What is the MOST secure way to resolve this issue?

A. Update the IAM instance profile that is attached to the EC2 instance to include the S3:ListBucket permission for the S3 bucket.
B. Update the S3 bucket policy by including the S3:ListBucket permission and by setting the Principal element to specify the account number of the EC2 instance.
C. Update the developer's user permissions to include the S3:ListBucket permission for the S3 bucket.
D. Update the IAM instance profile that is attached to the EC2 instance to include the S3:* permission for the S3 bucket.

Answer: A

NEW QUESTION # 185
A developer is creating an ecommerce workflow in an AWS Step Functions state machine that includes a HTTP Task state. The task passes shipping information and order details to an endpoint.
The developer needs to test the workflow to confirm that the HTTP headers and body are correct and that the responses meet expectations.

A. Use the data flow simulator to invoke only the HTTP Task. View the request and response data.
B. Change the log level of the state machine to ALL. Run the state machine.
C. Use the TestState API to invoke the state machine. Set the inspection level to DEBUG.
D. Use the TestState API to invoke only the HTTP Task. Set the inspection level to TRACE.

Answer: D

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:To confirm that the HTTP headers, body, and responses meet expectations, you need to test the specific HTTP Task state in isolation and inspect the details.
* Option A: TestState API with TRACE:
* The TestState API allows developers to test individual states in a state machine without executing the entire workflow.
* Setting the inspection level to TRACE provides detailed information about the HTTP request and response, including headers, body, and status codes.
* This option provides the precise and granular testing required to verify the HTTP Task functionality.
* Why Other Options Are Incorrect:
* Option B: The DEBUG inspection level provides less detailed information than TRACE and focuses on general debugging, not a detailed view of HTTP interactions.
* Option C: Step Functions does not have a "data flow simulator" to test individual tasks; this option is not valid.
* Option D: Changing the state machine's log level to ALL increases logging granularity for the entire state machine but does not allow isolated testing of a specific HTTP Task.
References:
* AWS Step Functions: Testing State Machines

NEW QUESTION # 186
A developer is managing an application that uploads user files to an Amazon S3 bucket named companybucket. The company wants to maintain copies of all the files uploaded by users for compliance purposes, while ensuring users still have access to the data through the application.
Which IAM permissions should be applied to users to ensure they can create but not remove files from the bucket?

A. {
"Version": "2012-10-17",
"Statement": [
{
"Sid": "statement1",
"Effect": "Allow",
"Action": ["s3:CreateBucket", "s3:GetBucketLocation"], "Resource": "arn:aws:s3:::companybucket"
}
]
}
B. {
"Version": "2012-10-17",
"Statement": [
{
"Sid": "statement1",
"Effect": "Allow",
"Action": ["s3:GetObject", "s3:PutObject"],
"Resource": ["arn:aws:s3:::companybucket"]
}
]
}
C. {
"Version": "2012-10-17",
"Statement": [
{
"Sid": "statement1",
"Effect": "Allow",
"Action": ["s3:GetObject", "s3:PutObject", "s3:DeleteObject"], "Resource":
["arn:aws:s3:::companybucket"]
}
]
}
D. {
"Version": "2012-10-17",
"Statement": [
{
"Sid": "statement1",
"Effect": "Allow",
"Action": ["s3:GetObject", "s3:PutObject", "s3:DeleteObject", "s3:PutObjectRetention"], "Resource":
"arn:aws:s3:::companybucket"
}
]
}

Answer: B

Explanation:
Users must be able to upload (PutObject) and read (GetObject) files but not delete them. Option D ensures users cannot delete files by omitting the s3:DeleteObject action while allowing s3:GetObject and s3:PutObject.

NEW QUESTION # 187
An ecommerce company is using an AWS Lambda function behind Amazon API Gateway as its application tier. To process orders during checkout, the application calls a POST API from the frontend. The POST API invokes the Lambda function asynchronously. In rare situations, the application has not processed orders. The Lambda application logs show no errors or failures.
What should a developer do to solve this problem?

A. Inspect the Lambda logs in Amazon CloudWatch for possible errors. Fix the errors.
B. Make sure that caching is disabled for the POST API in API Gateway.
C. Create and inspect the Lambda dead-letter queue. Troubleshoot the failed functions. Reprocess the events.
D. Inspect the frontend logs for API failures. Call the POST API manually by using the requests from the log file.

Answer: C

NEW QUESTION # 188
A developer runs an application that displays scores for sports games on Amazon EC2 instances. The application uses a Redis client to retrieve the scores from an Amazon ElastiCache (Redis OSS) cluster.
The developer observes increased latency during operations on the cache because of connection failures to the cluster. The developer needs to resolve the latency issues.

A. Deploy more nodes in the ElastiCache cluster. Update the Redis client to discover the new nodes.
B. Configure the Redis client in the application to persist connections to the cluster by implementing a connection pool.
C. Configure the Redis client to use an exponential backoff retry strategy to establish cache connections.
D. Store the scores in the application's memory. Perform bulk set operations on the scores that are stored in memory.

Answer: B

Explanation:
Comprehensive Detailed Explanation with all AWS References
* Why Option C is Correct:Implementing a connection pool in the Redis client reduces connection overhead and avoids frequent connection establishment, which helps to reduce latency and connection failures.
* Why Other Options are Incorrect:
* Option A: Exponential backoff retry strategies help with transient failures but do not resolve latency caused by frequent connection establishment.
* Option B: Storing scores in application memory adds complexity and risks inconsistency.
* Option D: Adding more nodes is unnecessary unless the cluster is under heavy load. Latency due to connection failures is better addressed at the application level.
* AWS Documentation References:
* Amazon ElastiCache Best Practices

NEW QUESTION # 189
......

Valid DVA-C02 Exam Format: https://www.examdiscuss.com/Amazon/exam/DVA-C02/