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最新的 AWS Certified Associate DVA-C02 免費考試真題 (Q24-Q29):

問題 #24
A developer is using AWS CloudFormation to deploy an AWS Lambda function. The developer needs to set the Lambda function's timeout value based on the environment parameter of the template. The template contains mappings of EnvironmentData for each environment's timeout value. The environment parameter and EnvironmentData mappings are as follows:
Environment parameter:

EnvironmentData mappings:

Which statement will meet these requirements?

答案：C

問題 #25
A developer created a web API that receives requests by using an internet-facing Application Load Balancer (ALB) with an HTTPS listener. The developer configures an Amazon Cognito user pool and wants to ensure that every request to the API is authenticated through Amazon Cognito.
What should the developer do to meet this requirement?

A. Create an Amazon API Gateway API. Configure all API methods to be forwarded to the ALB endpoint. Create an authorizer of the COGNITO_USER_POOLS type. Configure every API method to use that authorizer.
B. Add a listener rule to the listener to return a fixed response if the Authorization header is missing.
Set the fixed response to 401 Unauthorized.
C. Create a new target group that includes an AWS Lambda function target that validates the Authorization header by using Amazon Cognito. Associate the target group with the listener.
D. Create an authentication action for the listener rules of the ALSet the rule action type to authenticate-cognito. Set the OnUnauthenticatedRequest field to "deny."

答案：D

問題 #26
A company launched an online portal to announce a new product that the company will release in 6 months. The portal requests that users enter an email address to receive communications about the product. The company needs to create a REST API that will store the email addresses in Amazon DynamoDB.
A developer has created an AWS Lambda function that can store the email addresses. The developer will deploy the Lambda function by using the AWS Serverless Application Model (AWS SAM). The developer must provide access to the Lambda function over HTTP.
Which solutions will meet these requirements with the LEAST additional configuration? (Select TWO.)

A. Expose the Lambda function by using a Network Load Balancer.
B. Expose the Lambda function by using AWS Global Accelerator
C. Expose the Lambda function by using a Gateway Load Balancer.
D. Expose the Lambda function by using function URLs.
E. Expose the Lambda function by using Amazon API Gateway.

答案：D,E

問題 #27
A team of developers is creating an application that writes data to Amazon S3. Part of the application needs to programmatically append data to an existing file that is in Amazon S3. Which solution will meet this requirement?

A. Use an UploadPart API call. Include the new data, the location of the existing object, and an integer value that indicates the line to begin appending the new data.
B. Use a SelectObjectContent API call. Include the new data, the Amazon Resource Name (ARN) of the S3 bucket, and the key for the location of the existing object.
C. Use a PutObject API call. Include the new data, the location of the existing object, and an integer value that indicates the line to begin appending the new data.
D. Download the contents of the existing file. Concatenate the contents of the existing file and the new data. Upload the updated file to the existing bucket and the key for the location of the existing object.

答案：D

解題說明：
Amazon S3 objects are immutable - you cannot append in place. To add data to an existing object, your application must first retrieve (download) the current file, concatenate the new content, and then perform a PutObject (or multipart upload) to overwrite the object with the combined data. This approach ensures the file in S3 always reflects the appended content.

問題 #28
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?

A. Option B
B. Option A
C. Option C
D. Option D

答案：B

問題 #29
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