Exam AWS Certified Developer Associate topic 1 question 70 discussion

I believe C is the right answer. The Developer needs to modify the CloudFormation template not the Lambda function. Therefore, Mappings can be used to make the log group name available to the application using Fn::FindInMap

I think D

Option D is correct - Passing the log group's ARN (or name) as an environment variable to the Lambda function ensures that the application can access it easily at runtime, making Option D the correct choice. Eliminating Option C because the Mappings section is used for static key-value pairs or configurations, not for dynamic resource names or ARNs.

B) Eliminated - User data is used for EC2 instances, not for AWS Lambda.

Option C (Use the CloudFormation template's Mappings section to specify the log group's name) is not suitable for dynamic runtime values like log group names. Mappings are typically used for static values like AMI IDs in different regions. herefore, T option D is the most appropriate solution for making the log group's name available to the application at runtime.

A solução que atenderá a esse requisito é D. Passe o nome de recurso da Amazon (ARN) do grupo de logs como uma variável de ambiente para a função Lambda. Ao fazer isso, o nome do grupo de logs estará disponível para o aplicativo em tempo de execução, e a função Lambda poderá acessar e escrever logs no grupo de logs especificado no Amazon CloudWatch Logs.

I go with D 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

The developer can pass the log group's Amazon Resource Name (ARN) as an environment variable to the Lambda function to meet this requirement. This is option D. By specifying the log group's ARN as an environment variable in the CloudFormation template, the developer can make the ARN available to the Lambda function at runtime. The function can then use the ARN to write logs to the specified log group in Amazon CloudWatch Logs. This approach allows the developer to easily specify the log group for the application and make its name available to the application at runtime without requiring changes to the function code. Options A, B, and C are not effective ways to make the name of the log group available to the application at runtime.

D. Pass the log group's Amazon Resource Name (ARN) as an environment variable to the Lambda function. By passing the log group's ARN as an environment variable to the Lambda function, the application will have access to the log group's name at runtime. The ARN contains the necessary information to uniquely identify the log group and can be used by the application to interact with CloudWatch Logs.

Pass the log group's Amazon Resource Name (ARN) as an environment variable to the Lambda function.

You don't know an ARN of a Clowdwatch log group as it is not created yet. So D is not correct. I believe it is C.

The solution that will meet the requirement of making the name of the log group available to the application at runtime is D. Pass the log group’s Amazon Resource Name (ARN) as an environment variable to the Lambda function. This allows the Lambda function to access the log group’s ARN at runtime and use it to write logs to Amazon CloudWatch Logs.

The answer is D. When deploying an application using AWS CloudFormation and writing logs to Amazon CloudWatch Logs, a log group can be created. In this scenario, the developer needs to modify the CloudFormation template to enable the application to use the log group's name at runtime. To do this, the Amazon resource name (ARN) of the log group should be passed to the Lambda function as an environment variable. The Lambda function can then reference the environment variable when the log group's name is required. Therefore, D is the correct answer. A is used to include one AWS CloudFormation stack in another when using the AWS::Include transform, and is not relevant in this scenario. B is used to pass data to an EC2 instance when running a script using the user data section of a CloudFormation template, and is not relevant in this scenario. C is used to specify mapping data for each region in a CloudFormation template's mapping section, and is not relevant in this scenario.

Should be C, Lambda environment variable should get called inside the code. Log group definition should be in the cfn level.

D https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-lambda-function-environment.html

I vote D - https://stackoverflow.com/questions/65325865/aws-how-to-pass-arn-from-cloud-formation-template-to-aws-lambda-function

I vote D - https://stackoverflow.com/questions/65325865/aws-how-to-pass-arn-from-cloud-formation-template-to-aws-lambda-function