Free PDF Questions For Amazon AWS-Certified-Developer-Associate Exam, 537QAs

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Page: 1 / 108
Total Questions: 537

Questions & Answers PDF

• Question 1

  

  A developer implemented a static website hosted in amazon s3 that makes web service requests in amazon api gateway and aws lambda. The site is showing an error that reads.''No 'access control-allow-origin'header' header is present on the requested resource. Origin 'null is therefore not allowed access ''What should the developer do to resolve this issue?

  • Enable cross-origin resource sharing (cors) on the s3 bucket
    
  • Enable cross-origin resource sharing (cors) for the method in api gateway
    
  • Add the access control-request-method header to the request
    
  • Add the access-control inquest headers header to the request
    

  Reveal Answer Answer: 1 Next Question

• Question 2

  

  A company is adding stored value for gift card) capability to its highly popular casual gaming website. Users need to be able to trade this value for other users' items on the platform. This would require both users' records be updated as a single transaction, or both users' records to be completely rolled back.Which AWS database options can provide the transactional capability required for this new feature? (Select TWO )

  • Amazon DynamoDB with operations made with the ConsistentRead parameter set to true
    
  • Amazon ElastiCache for Memcached with operations made within a transaction block
    
  • Amazon Aurora MySQL with operations made within a transaction block
    
  • Amazon DynamoDB with reads and writes made using Transact' operations
    
  • Amazon Redshift with operations made within a transaction block
    

  Reveal Answer Answer: 3,,4 Next Question

• Question 3

  

  A company has a legacy application that was migrated to a fleet of Amazon EC2 instances. The application stores data in a MySQL database that is currently installed on a single EC2 instance The company has decided to migrate the database from the EC2 instance to MySQL on Amazon RDS.What should the developer do to update the application to support data storage in Amazon RDS?

  • Update the database connection parameters in the application to point to the new RDS instance
    
  • Add a script to the EC2 instance that implements an AWS SDK for requesting database credentials.
    
  • Create a new EC2 instance with an IAM role that allows access to the new RDS database
    
  • Create an AWS Lambda function that will route traffic from the EC2 instance to the RDS database.
    

  Reveal Answer Answer: 1 Next Question

• Question 4

  

  A developer is refactoring a monolithic application. The application takes a POST request and performs several operations. Some of the operations are in parallel while others run sequentially. These operations have been refactored into individual AWS Lambda functions. The POST request will be processed by Amazon API Gateway.How should the developer invoke the Lambda functions in the same sequence using API Gateway*?

  • Use Amazon SQS to invoke the Lambda functions
    
  • Use an AWS Step Functions activity to run the Lambda functions
    
  • Use Amazon SNS to trigger the Lambda functions
    
  • Use an AWS Step Functions state machine to orchestrate the Lambda functions.
    

  Reveal Answer Answer: 1 Next Question

• Question 5

  

  A developer is setting up Amazon API Gateway for their company's products The API will be used by registered developers to query and update their environments. The company wants to limit the amount of requests end users can send for both cost and security reasons Management wants to offer registered developers the option of buying larger packages that allow for more requests.How can the developer accomplish this with the LEAST amount of overhead management?

  • Enable throttling for the API Gateway stage. Set a value for both the rate and burst capacity. If a registered user chooses a larger package, create a stage for them, adjust the values, and share the new URL with them.
    
  • Set up Amazon CloudWatch API logging in API Gateway Create a filter based on the user and requestTime fields and create an alarm on this filter Write an AWS Lambda function to analyze the values and requester information, and respond accordingly Set up the function as the target for the alarm If a registered user chooses a larger package, update the Lambda code with the values.
    
  • Enable Amazon CloudWatch metrics for the API Gateway stage Set up CloudWatch alarms based off the Count metric and the ApiName, Method, Resource, and Stage dimensions to alerts when request rates pass the threshold Set the alarm action to Deny If a registered user chooses a larger package create a user-specific alarm and adjust the values
    
  • Set up a default usage plan, specify values for the rate and burst capacity, and associate it with a stage, if a registered user chooses a larger package, create a custom plan with the appropriate values and associate the plan with the user
    

  Reveal Answer Answer: 4 Next Question

Page: 1 / 108
Total Questions: 537

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