Recent questions tagged aws-developer-associate-certifications-questions-answers

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Q: You have a VPC with a subnet that houses an AWS RDS instance. Your manager has asked you to start monitoring all modifications made to its data by applications. You decide to use a Lambda function to do this

asked Oct 13 in Apache Storm by DavidAnderson

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Q: But while doing so, you get a 412 error for PreconditionFailedException. What can you do to debug and resolve the error?

asked Oct 13 in AWS by DavidAnderson

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Q: You are advised to use AWS Lambda for your mobile backend deployment. How could this be achieved efficiently?

asked Oct 13 by DavidAnderson

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Q: What is the most secure and less-costly way to store this information?

asked Oct 13 in AWS by DavidAnderson

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Q: your customers complain that not all data is delivered to them. Which Lambda CloudWatch metric should you look at first to resolve this problem?

asked Oct 13 in AWS by DavidAnderson

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Q: You have many Lambda functions that read data from the AWS Kinesis stream. Your colleague informs you that our application has too many Lambda function invocations, increasing latency for your application.

asked Oct 13 in AWS by DavidAnderson

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Q: After debugging, you discover that the Lambda functions don't have permissions to access records from the DynamoDB table. How will you resolve this issue using more tighter and secure AWS Managed Policy?

asked Oct 13 in AWS by DavidAnderson

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Q: After 10 minutes, all traffic is shifted to your deployment. What deployment preference type will meet this requirement?

asked Oct 13 in AWS by DavidAnderson

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Q: You have a SAM template used to deploy a Lambda function, and you are now working to create a new version. Your manager has asked you to instantly switch traffic once you have built and tested your version.

asked Oct 13 in AWS by DavidAnderson

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Q: On querying DynamoDB, you realize all 500 user's information is saved successfully. But CloudWatch shows failed invocations for the second function. How will you address the bottleneck in the least possible time?

asked Oct 13 in AWS by DavidAnderson

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Q: Your lead has asked you to work on a new module in which you need to query a DynamoDB table with multiple Partition Key values at once and store the result in CSV format on S3

asked Oct 13 in AWS by DavidAnderson

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Q: You are working as a Senior Software Developer for a large pharmaceutical company.

asked Oct 9 in AWS by DavidAnderson

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Q: You are working on a new reporting feature for which you need to query a DynamoDB table, and the attributes you need to query upon are not set as Partition Key and Sort Key. What is the best way to solve this problem?

asked Oct 9 in AWS by DavidAnderson

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Q: You have been asked to design a serverless web application with DynamoDB as its database. The client wants to record each and every change in data in DynamoDB and store it individually as a file on S3.

asked Oct 9 in AWS by DavidAnderson

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Q: You have been asked to troubleshoot a serverless application that is occasionally throwing errors while storing payment transaction details. The application is using DynamoDB as its database.

asked Oct 9 in AWS by DavidAnderson

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Q: You have been hired as a Database administrator by a start-up. Your first task is to modify a DynamoDB table so that its data expires automatically after a certain period of time.

asked Oct 9 in AWS by DavidAnderson

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Q: Your manager has assigned you a task to write an API that will extract data from a DynamoDB table with 30 columns and more than 10,000 rows of open data. Not all the columns are relevant for your use-case.

asked Oct 9 in AWS by DavidAnderson

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Q: One of your clients has a web application hosted on-prem and has recently migrated its database service to DynamoDB. The application receives more than 1000 read requests per second compared to 200 write requests every second.

asked Oct 9 in AWS by DavidAnderson

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Q: How many RCUs does the application need to fulfill all the requests?

asked Oct 9 in AWS by DavidAnderson

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Q: You are developing a gaming application that needs to write 100 items every second. Each item is of 2KB containing session data and game data. How many WCUs do you need to provision for your table?

asked Oct 9 in AWS by DavidAnderson

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