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NEW QUESTION 41
A Developer has implemented a Lambda function that needs to add new customers to an RDS database that is expected to run hundreds of times per hour. The Lambda function is configured to use 512MB of RAM and is based on the following pseudo code:

After testing the Lambda function, the Developer notices that the Lambda execution time is much longer than expected. What should the Developer do to improve performance?

• A. Move the database connection and close statement out of the handler. Place the connection in the global space.
• B. Increase the size of the RDS database to allow for an increased number of database connections each hour.
• C. Increase the amount of RAM allocated to the Lambda function, which will increase the number of threads the Lambda can use.
• D. Replace RDS wit Amazon DynamoDB to implement control over the number of writes per second.

Answer: A

Explanation:
Explanation
Refer AWS documentation - Lambda Best Practices
Take advantage of Execution Context reuse to improve the performance of your function. Make sure any externalized configuration or dependencies that your code retrieves are stored and referenced locally after initial execution. Limit the re-initialization of variables/objects on every invocation. Instead use static initialization/constructor, global/static variables and singletons. Keep alive and reuse connections (HTTP, database, etc.) that were established during a previous invocation.

NEW QUESTION 42
A developer is creating a new application that will be accessed by users through an API created using Amazon API Gateway The users need to be authenticated by a third-party Security Assertion Markup Language (SAML) identity provider Once authenticated, users will need access to other AWS services such as Amazon S3 and Amazon DynamoDB
How can these requirements be met?

• A. Use Amazon Cognito Identity pools with a SAML identity provider as one of the authentication providers
• B. Use the AWS IAM service to provide the sign-up and sign-in functionality.
• C. Use Amazon CloudFront signed URLs to connect with the SAML identity provider
• D. Use an Amazon Cognito user pool with SAML as the resource server

Answer: A

NEW QUESTION 43
What are the MINIMUM properties required in the resources section of the AppSpace file for CodeDeploy to deploy the ECS service successfully?

• A. TaskDefinition, ContainerName, and PlartformVersion
• B. name, alias, currentversion, and targetversion
• C. name, Currentversion, NetworkConfiguration, and Platform Version
• D. TaskDefinitionContainerName, ContainerPort

Answer: B

NEW QUESTION 44
Which of the following are valid arguments for an SNS Publish request? Choose 3 answers

• A. TopicAm
• B. Subject
• C. Format
• D. Message
• E. Language
• F. Destination

Answer: A,B,D

Explanation:
Explanation
https://docs.aws.amazon.com/sns/latest/api/API_Publish.html
Message
MessageAttributes
MessageStructure
PhoneNumber
Subject
TargetArn
TopicArn

NEW QUESTION 45
A company has an application that uses Amazon Cognito user pools as an identity provider. The company must secure access to user records. The company I up multi-factor authentication (MFA). The company also wants to send a login activity notification by email every time a user logs in.
What is the MOST operationally efficient solution that meets this requirement?

• A. Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Create an Amazon CloudWatch Logs log subscription filter to invoke the function based on the login status.
• B. Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Add an Amazon API Gateway to invoke the function. Call the API from the client side when login confirmation is received.
• C. Configure Amazon Cognito to stream all logs to Amazon Kinesis Data Firehose. Create an AWS Lambda function to process the streamed logs and it send the email notification based on the login status of each user.
• D. Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Add an Amazon Cognito post authentication Lambda trigger for the function.

Answer: A

NEW QUESTION 46
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