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The DVA-C02 exam consists of 65 multiple-choice and multiple-response questions that must be completed in 130 minutes. DVA-C02 exam fee is $150, and candidates must score at least 720 out of 1000 to pass. DVA-C02 exam is available in English, Japanese, Korean, and Simplified Chinese, and can be taken either in-person at a testing center or remotely through online proctoring. AWS Certified Developer - Associate certification is valid for three years, after which the candidate must recertify to maintain their status as an AWS Certified Developer - Associate.
Amazon DVA-C02 Exam consists of 65 multiple-choice and multiple-response questions that must be completed within 130 minutes. DVA-C02 exam fee is $150, and it can be taken online or at a testing center. Candidates who successfully pass the exam will receive the AWS Certified Developer - Associate certification, which is valid for three years. They will also be listed in the AWS Certified Developer - Associate directory and have access to exclusive AWS certification events and resources.
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To prepare for the DVA-C02 Exam, candidates should have hands-on experience working with AWS services and should be familiar with AWS best practices. They should also have a good understanding of programming languages such as Java, Python, and Ruby, as well as database technologies such as MySQL and Oracle. Candidates can prepare for the exam by taking online courses, attending AWS training sessions, and practicing with sample questions and scenarios.
NEW QUESTION # 506
A company hosts a client-side web application for one of its subsidiaries on Amazon S3. The web application can be accessed through Amazon CloudFront from https://www.example.com. After a successful rollout, the company wants to host three more client-side web applications for its remaining subsidiaries on three separate S3 buckets. To achieve this goal, a developer moves all the common JavaScript files and web fonts to a central S3 bucket that serves the web applications. However, during testing, the developer notices that the browser blocks the JavaScript files and web fonts.
What should the developer do to prevent the browser from blocking the JavaScript files and web fonts?
Answer: B
Explanation:
This is a frequent trouble. Web applications cannot access the resources in other domains by default, except some exceptions. You must configure CORS on the resources to be accessed.
https://docs.aws.amazon.com/AmazonS3/latest/userguide/cors.html
NEW QUESTION # 507
A company has an online web application that includes a product catalog. The catalog is stored in an Amazon S3 bucket that is named DOC-EXAMPLE-BUCKET. The application must be able to list the objects in the S3 bucket and must be able to download objects through an 1AM policy.
Which policy allows MINIMUM access to meet these requirements?
Answer: D
NEW QUESTION # 508
A developer maintains a serverless application that uses an Amazon API Gateway REST API to invoke an AWS Lambda function by using a non-proxy integration. The Lambda function returns data, which is stored in Amazon DynamoDB.
Several application users begin to receive intermittent errors from the API. The developer examines Amazon CloudWatch Logs for the Lambda function and discovers several ProvisionedThroughputExceededException errors.
The developer needs to resolve the errors and ensure that the errors do not reoccur.
Answer: B
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* Option A: Provisioned Capacity with Exponential Backoff:
* Using provisioned capacity ensures sufficient throughput for the DynamoDB table.
* Configuring the Lambda function to implement exponential backoff retries reduces the chance of exceeding capacity during peak usage.
* This combination addresses the root cause (ProvisionedThroughputExceededException) and prevents errors without overprovisioning.
* Why Other Options Are Incorrect:
* Option B:Using SQS adds unnecessary latency and complexity. The issue lies in DynamoDB throughput, not request management.
* Option C:A usage plan for the API does not address throughput issues in DynamoDB.
* Option D:Invoking the Lambda function asynchronously does not resolve the DynamoDB capacity issue and might lead to delayed processing.
NEW QUESTION # 509
A company has a web application that is hosted on Amazon EC2 instances The EC2 instances are configured to stream logs to Amazon CloudWatch Logs The company needs to receive an Amazon Simple Notification Service (Amazon SNS) notification when the number of application error messages exceeds a defined threshold within a 5-minute period Which solution will meet these requirements?
Answer: D
Explanation:
* CloudWatch for Log Analysis: CloudWatch is the best fit here because logs are already centralized.
Here's the process:
* Metric Filter: Create a metric filter on the CloudWatch Logs log group. Design a pattern to specifically identify application error messages.
* Custom Metric: This filter generates a new custom CloudWatch metric (e.g., ApplicationErrors).
This metric tracks the error count.
* CloudWatch Alarm: Create an alarm on the ApplicationErrors metric. Configure the alarm with your desired threshold and a 5-minute evaluation period.
* SNS Action: Set the alarm to trigger an SNS notification when it enters the alarm state.
References:
* CloudWatch Metric Filters: https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs
/MonitoringLogData.html
* CloudWatch Alarms: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring
/AlarmThatSendsEmail.html
NEW QUESTION # 510
A developer at a company needs to create a small application that makes the same API call once each day at a designated time. The company does not have infrastructure in the AWS Cloud yet, but the company wants to implement this functionality on AWS.
Which solution meets these requirements in the MOST operationally efficient manner?
Answer: A
Explanation:
Explanation
The correct answer is C. Use an AWS Lambda function that is invoked by an Amazon EventBridge scheduled event.
C: Use an AWS Lambda function that is invoked by an Amazon EventBridge scheduled event. This is correct.
AWS Lambda is a serverless compute service that lets you run code without provisioning or managing servers.
Lambda runs your code on a high-availability compute infrastructure and performs all of the administration of the compute resources, including server and operating system maintenance, capacity provisioning and automatic scaling, and logging1. Amazon EventBridge is a serverless event bus service that enables you to connect your applications with data from a variety of sources2. EventBridge can create rules that run on a schedule, either at regular intervals or at specific times and dates, and invoke targets such as Lambda functions3. This solution meets the requirements of creating a small application that makes the same API call once each day at a designated time, without requiring any infrastructure in the AWS Cloud or any operational overhead.
A: Use a Kubernetes cron job that runs on Amazon Elastic Kubernetes Service (Amazon EKS). This is incorrect. Amazon EKS is a fully managed Kubernetes service that allows you to run containerized applications on AWS4. Kubernetes cron jobs are tasks that run periodically on a given schedule5. This solution could meet the functional requirements of creating a small application that makes the same API call once each day at a designated time, but it would not be the most operationally efficient manner. The company would need to provision and manage an EKS cluster, which would incur additional costs and complexity.
B: Use an Amazon Linux crontab scheduled job that runs on Amazon EC2. This is incorrect. Amazon EC2 is a web service that provides secure, resizable compute capacity in the cloud6. Crontab is a Linux utility that allows you to schedule commands or scripts to run automatically at a specified time or date7. This solution could meet the functional requirements of creating a small application that makes the same API call once each day at a designated time, but it would not be the most operationally efficient manner. The company would need to provision and manage an EC2 instance, which would incur additional costs and complexity.
D: Use an AWS Batch job that is submitted to an AWS Batch job queue. This is incorrect. AWS Batch enables you to run batch computing workloads on the AWS Cloud8. Batch jobs are units of work that can be submitted to job queues, where they are executed in parallel or sequentially on compute environments9. This solution could meet the functional requirements of creating a small application that makes the same API call once each day at a designated time, but it would not be the most operationally efficient manner. The company would need to configure and manage an AWS Batch environment, which would incur additional costs and complexity.
References:
1: What is AWS Lambda? - AWS Lambda
2: What is Amazon EventBridge? - Amazon EventBridge
3: Creating an Amazon EventBridge rule that runs on a schedule - Amazon EventBridge
4: What is Amazon EKS? - Amazon EKS
5: CronJob - Kubernetes
6: What is Amazon EC2? - Amazon EC2
7: Crontab in Linux with 20 Useful Examples to Schedule Jobs - Tecmint
8: What is AWS Batch? - AWS Batch
9: Jobs - AWS Batch
NEW QUESTION # 511
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