DVA-C02受験資料更新版、DVA-C02技術試験

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Amazon DVA-C02試験は、AWS Compute、AWS Storage、AWS Databases、AWS Security、AWS Management Tools、およびAWS Application Integrationなど、AWSサービスに関連するさまざまなトピックをカバーしています。この試験は、これらのサービスの知識と理解、および安全でスケーラブルで高可用性なソリューションを設計および実装する能力を試験するために設計されています。この試験はまた、AWS上のアプリケーションのトラブルシューティングと最適化の能力、およびAWSサービスとツールを使用して展開と管理プロセスを自動化および効率化する能力を試験するためにも設計されています。クラウドコンピューティングでキャリアを追求したい人や、AWSのスキルと知識を向上させたい人にとって、Amazon DVA-C02試験は優れた選択肢です。

Amazon DVA-C02試験は、Amazon Web Services（AWS）が提供するAWS Certified Developer-Associate認定試験です。AWSベースのアプリケーションの開発と維持の経験を持つ個人を対象としています。この試験は、AWSのサービスやツールを使用してクラウドベースのアプリケーションを設計、開発、展開する能力を受験者が持っているかどうかを検証します。この認定は、AWS開発者としてのキャリアを進め、クラウドベースのアプリケーションを構築することに熟練することを望む人々を対象としています。

>> DVA-C02受験資料更新版 <<

DVA-C02技術試験 & DVA-C02日本語版

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Amazon DVA-C02認定試験は、Amazon Web Services（AWS）プラットフォームでアプリケーションの開発と維持に関する専門知識を実証したい個人向けに設計されています。この認定試験は、AWSサービスを使用したアプリケーションの開発と維持に少なくとも1年の経験がある候補者を対象としています。 DVA-C02試験は、2018年にリリースされた以前のDVA-C01試験の更新バージョンです。新しい試験には、AWS Lambda、AWS Elastic BeanStalk、AWS Dynamodbなどの最新のAWSサービスとテクノロジーをカバーする更新コンテンツが含まれています。

Amazon AWS Certified Developer - Associate 認定 DVA-C02 試験問題 (Q851-Q856):

質問 # 851
A developer has created an AWS Lambda function that makes queries to an Amazon Aurora MySQL DB instance. When the developer performs a test the OB instance shows an error for too many connections.
Which solution will meet these requirements with the LEAST operational effort?

A. Create a proxy in Amazon RDS Proxy Query the proxy instead of the DB instance.
B. Create a read replica for the DB instance Query the replica DB instance instead of the primary DB instance.
C. Migrate the data lo an Amazon DynamoDB database.
D. Configure the Amazon Aurora MySQL DB instance tor Multi-AZ deployment.

正解：A

解説：
This solution will meet the requirements by using Amazon RDS Proxy, which is a fully managed, highly available database proxy for Amazon RDS that makes applications more scalable, more resilient to database failures, and more secure. The developer can create a proxy in Amazon RDS Proxy, which sits between the application and the DB instance and handles connection management, pooling, and routing. The developer can query the proxy instead of the DB instance, which reduces the number of open connections to the DB instance and avoids errors for too many connections. Option A is not optimal because it will create a read replica for the DB instance, which may not solve the problem of too many connections as read replicas also have connection limits and may incur additional costs. Option B is not optimal because it will migrate the data to an Amazon DynamoDB database, which may introduce additional complexity and overhead for migrating and accessing data from a different database service. Option C is not optimal because it will configure the Amazon Aurora MySQL DB instance for Multi-AZ deployment, which may improve availability and durability of the DB instance but not reduce the number of connections.

質問 # 852
A company builds a web application that allows employees to submit an employee survey after business travel events. The web application sends a notification to an Amazon SNS topic. A third- party application is subscribed to the SNS topic.
The company has instructed employees to not add the employee IDs to survey responses to protect personal information. However, during an audit of the survey data, the company notices that some employees have added employee IDs to the survey responses.
The company wants to prevent employees from adding employee IDs to the survey responses.
Which solution will meet this requirement with LEAST development effort?

A. Configure a data protection policy for the SNS topic. Use SNS managed data identifiers to deny notifications that include employee IDs.
B. Create an AWS Lambda function. Subscribe the function to the SNS topic. Configure the Lambda function to use regular expressions to identify the employee IDs and to remove the IDs from the SNS notifications.
C. Configure a data protection policy for the SNS topic. Configure the policy to use regular expressions to identify employee IDs and to deny processing when regular expressions match on an ID.
D. Update the application code to submit the survey to an Amazon S3 bucket. Use Amazon Macie to scan the S3 bucket to identify and remove the employee IDs. Configure S3 bucket notifications to send only processed records to the SNS topic.

正解：A

解説：
Using SNS managed data identifiers with data protection policies allows detection and blocking of sensitive data patterns like employee IDs automatically with minimal development effort, directly integrated with SNS. This prevents sensitive data from being sent in notifications without needing custom code.

質問 # 853
A developer is using an AWS account to build an application that stores files in an Amazon S3 bucket. Files must be encrypted at rest by AWS KMS keys. A second AWS account must have access to read files from the bucket.
The developer wants to minimize operational overhead for the application. Which combination of solutions will meet these requirements? (Choose two.)

A. Use a customer managed key to encrypt the files. Create a key policy that grants kms: Decrypt permissions to the second AWS account.
B. Create a gateway endpoint for the S3 bucket. Modify the endpoint policy to grant s3:GetObject permissions to the second AWS account.
C. Use an AWS managed key to encrypt the files. Create a key policy that grants kms:Decrypt permissions to the second AWS account.
D. Create a bucket policy for the S3 bucket that grants s3:GetObject permissions to the second AWS account.
E. Create a service control policy (SCP) that grants s3:GetObject permissions to the second AWS account.

正解：A、D

質問 # 854
A company has an Amazon API Gateway REST API that integrates with an AWS Lambda function. The API
' s development stage references a development alias of the Lambda function named " dev " . A developer needs to make a production alias of the Lambda function named " prod " available through the API. Which solution meets these requirements?

A. Deploy the API to a new stage named production. Configure the stage to include a stage variable that points to the " prod " Lambda function alias.
B. Create a new method on the API. Name the method production. Configure an integration request on the API ' s development stage that points to the " prod " Lambda function alias.
C. Deploy the API to a new stage named production. Configure an integration request on the API ' s production stage that points to the " prod " Lambda function alias.
D. Create a new method on the API. Name the method production. Configure the method to include a stage variable that points to the " prod " Lambda function alias.

正解：A

解説：
API Gateway Stage Variables allow you to dynamically point to different backends based on the stage. You can configure the Lambda integration to use a variable (e.g., ${stageVariables.lambdaAlias} ) instead of a static ARN. By deploying to a new " production " stage and setting the stage variable lambdaAlias to " prod "
, the production stage will invoke the production version of the function while the dev stage continues to use " dev " .

質問 # 855
A company uses AWS CloudFormation to deploy an application that includes an Amazon API Gateway REST API integrated with AWS Lambda and Amazon DynamoDB. The application has three stages:
development, testing, and production, each with its own DynamoDB table.
The company wants to deploy a new production release and route 20% of traffic to the new version while keeping 80% of traffic on the existing production version. The solution must minimize the number of errors that any single customer experiences.
Which approach should the developer take?

A. Deploy incremental portions of the changes to production in multiple steps.
B. Configure canary deployment settings for the production API stage and route 20% of traffic to the canary.
C. Deploy an Application Load Balancer in front of the API Gateway stages and weight traffic.
D. Use Amazon Route 53 weighted routing between the production and testing stages.

正解：B

解説：
Amazon API Gateway supports canary deployments, which are designed specifically for controlled production rollouts. Canary deployments allow a developer to direct a configurable percentage of traffic to a new deployment while the remainder continues to use the existing deployment.
AWS documentation states that canary releases help minimize customer impact by exposing only a subset of users to potential issues. Because the routing is request-based, individual users are less likely to encounter inconsistent behavior across multiple requests.
Route 53 weighted routing (Option B) operates at the DNS level and can result in users being routed unpredictably due to DNS caching. An Application Load Balancer (Option C) is not supported as a direct frontend for API Gateway stages and adds unnecessary complexity. Option A lacks traffic control guarantees.
Therefore, configuring a canary deployment on the production stage is the AWS-recommended and lowest- risk approach.

質問 # 856
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