Task 1.4: Apply Programming Concepts DEA-C01 Practice Questions (Page 6)

Questions 26–30

1. 26application · medium

   A team deploys a Lambda function via AWS SAM that processes messages from an SQS queue. The function is CPU-bound and each invocation takes about 8 seconds. The team needs to increase throughput to handle a spike in messages. Which configuration change should the team make?

   • AIncrease the Lambda function's memory allocation from 512 MB to 1024 MB.
   • BIncrease the SQS queue's visibility timeout to 30 seconds.
   • CSet the Lambda function's reserved concurrency to 1 to prevent throttling.
   • DChange the Lambda function's timeout from 10 seconds to 15 seconds.
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2. 27expert · hard

   A team runs a Lambda function that processes messages from an SQS queue. The function is I/O-bound and each invocation takes about 2 seconds. The team needs to process 10,000 messages per minute. The function currently has a reserved concurrency of 100 and a memory of 512 MB. Which change should the team make to meet the throughput requirement?

   • AIncrease the memory to 1024 MB.
   • BUse a Lambda destination to send messages to another queue.
   • CDecrease the SQS visibility timeout to 10 seconds.
   • DIncrease the reserved concurrency to 500.
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4. 28foundation · easy

   A team of data engineers collaborates on a shared codebase for ETL jobs. Which practice is most important for tracking changes, enabling collaboration, and maintaining a history of modifications?

   • ALogging
   • BTesting
   • CVersion control
   • DMonitoring
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5. 29application · medium

   A data engineering team is building a serverless pipeline using AWS SAM. The pipeline includes a Lambda function that processes files and a DynamoDB table to store results. The team wants to deploy this pipeline automatically whenever code is pushed to the main branch. Which combination of actions should the team take?

   • ACreate a CloudFormation template that defines only the DynamoDB table, and use AWS AppSync to deploy the Lambda function.
   • BWrite a Bash script that uses the AWS CLI to create the Lambda function and DynamoDB table, and run it via a cron job.
   • CUse the AWS Management Console to create the Lambda function and DynamoDB table, then manually invoke the function after each code change.
   • DUse a SAM template to define the Lambda function and DynamoDB table, then use CodePipeline to build and deploy the template on code push.
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6. 30foundation · easy

   Which statement best describes distributed computing?

   • AA model where data is stored only on local disks
   • BA model where all processing happens on a single server
   • CA model where multiple computers work together to process data as a single system
   • DA model where a single powerful computer processes all data sequentially
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