DVA-C02 LATEST LEARNING MATERIAL, DVA-C02 LATEST TEST PDF

DVA-C02 Latest Learning Material, DVA-C02 Latest Test Pdf

DVA-C02 Latest Learning Material, DVA-C02 Latest Test Pdf

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Free PDF First-grade Amazon DVA-C02 - AWS Certified Developer - Associate Latest Learning Material

At PDFVCE, we strive hard to offer a comprehensive AWS Certified Developer - Associate (DVA-C02) exam questions preparation material bundle pack. The product available at PDFVCE includes Amazon DVA-C02 Real Dumps pdf and mock tests (desktop and web-based). Practice exams give an experience of taking the AWS Certified Developer - Associate (DVA-C02) actual exam.

Amazon AWS Certified Developer - Associate Sample Questions (Q27-Q32):

NEW QUESTION # 27
A company has a website that is developed in PHP and is launched using AWS Elastic Beanstalk. There is a new version of the website that needs to be deployed in the Elastic Beanstalk environment. The company cannot tolerate having the website offline if an update fails. Deployments must have minimal impact and rollback as soon as possible.

  • A. All at once
  • B. Rolling
  • C. Immutable
  • D. Snapshots

Answer: C

Explanation:
The Immutable deployment method is the best choice when a company requires minimal downtime and automatic rollback in case of a failure. Here's why:
* In Immutable deployments, a new set of instances is launched with the updated version. These instances are tested and validated before they replace the old instances. This ensures zero downtime and immediate rollback if the deployment fails.
* All at once (A) causes downtime because the update replaces all instances simultaneously.
* Rolling deployments (B) update a few instances at a time, but if a failure occurs midway, downtime or partial unavailability can happen.
* Snapshots (C) are not a deployment strategy in Elastic Beanstalk.


NEW QUESTION # 28
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.

  • A. Use provisioned capacity mode for the DynamoDB table, and assign sufficient capacity units.
    Configure the Lambda function to retry requests with exponential backoff.
  • B. Update the REST API to invoke the Lambda function asynchronously.
  • C. Configure a usage plan for the REST API.
  • D. Update the REST API to send requests on an Amazon SQS queue. Configure the Lambda function to process requests from the queue.

Answer: A

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 # 29
A developer is working on an ecommerce website. The developer wants to review server logs without logging in to each of the application servers individually. The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available.
How can the developer update the application to meet these requirements with MINIMUM changes?

  • A. Scale down the application to one larger EC2 instance where only one instance is recording logs.
  • B. Set up centralized logging by using Amazon OpenSearch Service, Logstash, and OpenSearch Dashboards.
  • C. Rewrite the application to be cloud native and to run on AWS Lambda, where the logs can be reviewed in Amazon CloudWatch.
  • D. Install the unified Amazon CloudWatch agent on the EC2 instances. Configure the agent to push the application logs to CloudWatch.

Answer: D

Explanation:
Option D is the best option because it requires minimum changes and leverages the existing infrastructure.


NEW QUESTION # 30
A company processes incoming documents from an Amazon S3 bucket. Users upload documents to an S3 bucket using a web user interface. Upon receiving files in S3, an AWS Lambda function is invoked to process the files, but the Lambda function times out intermittently.
If the Lambda function is configured with the default settings, what will happen to the S3 event when there is a timeout exception?

  • A. The S3 event is sent to the default Dead Letter Queue.
  • B. The S3 event is discarded after the event is retried twice.
  • C. The S3 event is processed until it is successful.
  • D. Notification of a failed S3 event is sent as an email through Amazon SNS.

Answer: B


NEW QUESTION # 31
A company notices that credentials that the company uses to connect to an external software as a service (SaaS) vendor are stored in a configuration file as plaintext.
The developer needs to secure the API credentials and enforce automatic credentials rotation on a quarterly basis.
Which solution will meet these requirements MOST securely?

  • A. Store the credentials in AWS Systems Manager Parameter Store and enable rotation. Retrieve the credentials when users make API calls to the SaaS vendor.
  • B. Retrieve temporary credentials from AWS Security Token Service (AWS STS) every 15 minutes. Use the temporary credentials when users make API calls to the SaaS vendor.
  • C. Use AWS Key Management Service (AWS KMS) to encrypt the configuration file. Decrypt the configuration file when users make API calls to the SaaS vendor. Enable rotation.
  • D. Store the credentials in AWS Secrets Manager and enable rotation. Configure the API to have Secrets Manager access.

Answer: D

Explanation:
Store the credentials in AWS Secrets Manager and enable rotation. Configure the API to have Secrets Manager access. This is correct. This solution will meet the requirements most securely, because it uses a service that is designed to store and manage secrets such as API credentials. AWS Secrets Manager helps you protect access to your applications, services, and IT resources by enabling you to rotate, manage, and retrieve secrets throughout their lifecycle1. You can store secrets such as passwords, database strings, API keys, and license codes as encrypted values2. You can also configure automatic rotation of your secrets on a schedule that you specify3. You can use the AWS SDK or CLI to retrieve secrets from Secrets Manager when you need them4. This way, you can avoid storing credentials in plaintext files or hardcoding them in your code.
The blue/green method creates a new environment with a new set of instances and deploys the new version to them. Then, it swaps the URLs between the old and new environments. This method maintains full capacity and avoids service interruption, but it also increases the cost of additional resources significantly, because it duplicates the entire environment.


NEW QUESTION # 32
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