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Amazon持ってきた製品があなたにふさわしくないと感じることはよくありますか？ Amazonラーニングガイドを使用することに決めた場合、問題に遭遇することは決してないことをお伝えしたいと思います。 私たちの教材は、あなたが期待できないDVA-C02高品質を持っています。 学習教材のガイダンスで経験を積むと、以前よりもDVA-C02時間を費やさず、明らかにAWS Certified Developer - Associate進歩を感じることができます。また、Amazonテストクイズは進歩に役立つことがわかります。
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Troubleshooting and Optimization | 18% | - Optimize applications by using AWS services and features
|
| Topic 2: Development with AWS Services | 32% | - Use data stores in application development
|
| Topic 3: Security | 26% | - Manage sensitive data in application code
|
| Topic 4: Deployment | 24% | - Deploy code by using AWS CI/CD services
|
人によって目標が違いますが、あなたにAmazon DVA-C02試験に順調に合格できるのは我々の共同の目標です。この目標の達成はあなたがIT技術領域へ行く更なる発展の一歩ですけど、我々社MogiExam存在するこそすべての意義です。だから、我々社は力の限りで弊社のAmazon DVA-C02試験資料を改善し、改革の変更に応じて更新します。あなたはいつまでも最新版の問題集を使用できるために、ご購入の一年間で無料の更新を提供します。
質問 # 613
A company built an online event platform For each event the company organizes quizzes and generates leaderboards that are based on the quiz scores. The company stores the leaderboard data in Amazon DynamoDB and retains the data for 30 days after an event is complete The company then uses a scheduled job to delete the old leaderboard data The DynamoDB table is configured with a fixed write capacity. During the months when many events occur, the DynamoDB write API requests are throttled when the scheduled delete job runs.
A developer must create a long-term solution that deletes the old leaderboard data and optimizes write throughput Which solution meets these requirements?
正解：B
解説：
DynamoDB TTL (Time-to-Live): A native feature that automatically deletes items after a specified expiration time.
Efficiency: Eliminates the need for scheduled deletion jobs, optimizing write throughput by avoiding potential throttling conflicts.
Seamless Integration: TTL works directly within DynamoDB, requiring minimal development overhead.
Reference:
DynamoDB TTL Documentation: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html
質問 # 614
A company wants to share information with a third party. The third party has an HTTP API endpoint that the company can use to share the information. The company has the required API key to access the HTTP API.
The company needs a way to manage the API key by using code. The integration of the API key with the application code cannot affect application performance.
Which solution will meet these requirements MOST securely?
正解：D
解説：
AWS Secrets Manager is a service that helps securely store, rotate, and manage secrets such as API keys, passwords, and tokens. The developer can store the API credentials in AWS Secrets Manager and retrieve them at runtime by using the AWS SDK. This solution will meet the requirements of security, code management, and performance. Storing the API credentials in a local code variable or an S3 object is not secure, as it exposes the credentials to unauthorized access or leakage. Storing the API credentials in a DynamoDB table is also not secure, as it requires additional encryption and access control measures.
Moreover, retrieving the credentials from S3 or DynamoDB may affect application performance due to network latency.
質問 # 615
A company is using AWS CioudFormation to deploy a two-tier application. The application will use Amazon RDS as its backend database. The company wants a solution that will randomly generate the database password during deployment. The solution also must automatically rotate the database password without requiring changes to the application.
What is the MOST operationally efficient solution that meets these requirements'?
正解：C
解説：
Explanation
This solution will meet the requirements by using AWS Secrets Manager, which is a service that helps protect secrets such as database credentials by encrypting them with AWS Key Management Service (AWS KMS) and enabling automatic rotation of secrets. The developer can use an AWS Secrets Manager resource in AWS CloudFormation template, which enables creating and managing secrets as part of a CloudFormation stack.
The developer can use an AWS::SecretsManager::Secret resource type to generate and rotate the password for accessing RDS database during deployment. The developer can also specify a RotationSchedule property for the secret resource, which defines how often to rotate the secret and which Lambda function to use for rotation logic. Option A is not optimal because it will use an AWS Lambda function as a CloudFormation custom resource, which may introduce additional complexity and overhead for creating and managing a custom resource and implementing rotation logic. Option B is not optimal because it will use an AWS Systems Manager Parameter Store resource with the SecureString data type, which does not support automatic rotation of secrets. Option C is not optimal because it will use a cron daemon on the application's host to generate and rotate the password, which may incur more costs and require more maintenance for running and securing a host.
References: [AWS Secrets Manager], [AWS::SecretsManager::Secret]
質問 # 616
A developer has built an application that inserts data into an Amazon DynamoDB table. The table is configured to use provisioned capacity. The application is deployed on a burstable nano Amazon EC2 instance. The application logs show that the application has been failing because of a ProvisionedThroughputExceededException error.
Which actions should the developer take to resolve this issue? (Choose two.)
正解：C、D
質問 # 617
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.
Which approach should the developer use to achieve this with minimal testing overhead?
正解：C
解説：
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.
質問 # 618
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