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Amazon AWS Certified Developer - Associate Sample Questions (Q116-Q121):

NEW QUESTION # 116
A company is creating an application that processes csv files from Amazon S3 A developer has created an S3 bucket The developer has also created an AWS Lambda function to process the csv files from the S3 bucket Which combination of steps will invoke the Lambda function when a csv file is uploaded to Amazon S3?
(Select TWO.)

A. Create a new Lambda function to scan the S3 bucket for recently added S3 objects
B. Create an Amazon EventBridge rule Configure the rule with a pattern to match the S3 object created event
C. Add a trigger to the existing Lambda function. Set the trigger type to EventBridge Select the Amazon EventBridge rule.
D. Add S3 Lifecycle rules to invoke the existing Lambda function
E. Schedule an Amazon EventBridge rule to run a new Lambda function to scan the S3 bucket.

Answer: B,D

Explanation:
* Amazon EventBridge: A service that reacts to events from various AWS sources, including S3. Rules define which events trigger actions (like invoking Lambda functions).
* S3 Object Created Events: EventBridge can detect these, providing seamless integration for automated CSV processing.
* S3 Lifecycle Rules: Allow for actions based on object age or prefixes. These can directly trigger Lambda functions for file processing.

NEW QUESTION # 117
An application is using Amazon Cognito user pools and identity pools for secure access. A developer wants to integrate the user-specific file upload and download features in the application with Amazon S3. The developer must ensure that the files are saved and retrieved in a secure manner and that users can access only their own files. The file sizes range from 3 KB to 300 MB.
Which option will meet these requirements with the HIGHEST level of security?

A. Use Amazon API Gateway and an AWS Lambda function to upload and download files. Validate each request in the Lambda function before performing the requested operation.
B. Use S3 Event Notifications to validate the file upload and download requests and update the user interface (UI).
C. Save the details of the uploaded files in a separate Amazon DynamoDB table. Filter the list of files in the user interface (UI) by comparing the current user ID with the user ID associated with the file in the table.
D. Use an IAM policy within the Amazon Cognito identity prefix to restrict users to use their own folders in Amazon S3.

Answer: D

Explanation:
Explanation
https://docs.aws.amazon.com/cognito/latest/developerguide/amazon-cognito-integrating-user-pools-with-identit

NEW QUESTION # 118
A developer is creating a serverless application that uses an AWS Lambda function The developer will use AWS CloudFormation to deploy the application The application will write logs to Amazon CloudWatch Logs The developer has created a log group in a CloudFormation template for the application to use The developer needs to modify the CloudFormation template to make the name of the log group available to the application at runtime Which solution will meet this requirement?

A. Pass the log group's Amazon Resource Name (ARN) as an environment variable to the Lambda function
B. Use the AWS:lnclude transform in CloudFormation to provide the log group's name to the application
C. Pass the log group's name to the application in the user data section of the CloudFormation template.
D. Use the CloudFormation template's Mappings section to specify the log group's name for the application.

Answer: A

Explanation:
Explanation
FunctionName: MyLambdaFunction
Code:
S3Bucket: your-lambda-code-bucket
S3Key: lambda-code.zip
Runtime: nodejs14.x # Specify the desired runtime for your Lambda function Environment:
Variables:
LOG_GROUP_NAME: !Ref MyLogGroup
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-loggroup.html

NEW QUESTION # 119
A company is building a new application that runs on AWS and uses Amazon API Gateway to expose APIs. Teams of developers are working on separate components of the application in parallel. The company wants to publish an API without an integrated backend so that teams that depend on the application backend can continue the development work before the API backend development is complete.
Which solution will meet these requirements?

A. Create API Gateway resources and set the integration type value set to HTTP_PROXY. Add mapping templates and deploy the API. Create an AWS Lambda layer that returns various HTTP status codes. Associate the Lambda layer with the API deployment.
B. Create an EC2 application that returns mocked HTTP responses. Create API Gateway resources and set the integration type value to AWS. Create an API Gateway stage and deploy the API.
C. Create an AWS Lambda function that returns mocked responses and various HTTP status codes.
Create API Gateway resources and set the integration type value to AWS_PROXY. Deploy the API.
D. Create API Gateway resources and set the integration type value to MOCK. Configure the method integration request and integration response to associate a response with an HTTP status code. Create an API Gateway stage and deploy the API.

Answer: D

NEW QUESTION # 120
A developer is creating an AWS Lambda function that is invoked by messages to an Amazon Simple Notification Service (Amazon SNS) topic. The messages represent customer data updates from a customer relationship management (CRM) system The developer wants the Lambda function to process only the messages that pertain to email address changes. Additional subscribers to the SNS topic will process any other messages.
Which solution will meet these requirements in the LEAST development effort?

A. Subscribe an Amazon Simple Queue Service (Amazon SQS) queue to the SNS topic. Configure the SQS queue with a filter policy to allow only messages that are related to email address changes.
Connect the SQS queue to the Lambda function.
B. Configure the Lambda code to check the received message. If the message is not related to an email address change, configure the Lambda function to publish the message back to the SNS topic for the other subscribers to process.
C. Use Lambda event filtering to allow only messages that are related to email address changes to invoke the Lambda function.
D. Use an SNS filter policy on the Lambda function subscription to allow only messages that are related to email address changes to invoke the Lambda function.

Answer: D

NEW QUESTION # 121
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