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Serverless Deployment Flashcards

7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Serverless Deployment flashcards as text

  1. Which AWS SAM CLI command packages a serverless application and uploads artifacts to S3 before deployment?

    Answer: sam package

    sam package bundles the application code and uploads artifacts to an S3 bucket, producing a packaged CloudFormation template.

  2. When deploying a Lambda function via CodeDeploy with a canary traffic-shifting strategy, which configuration routes 10% of traffic immediately and the rest after 5 minutes?

    Answer: Canary10Percent5Minutes

    Canary10Percent5Minutes shifts 10% of traffic to the new version immediately, then shifts the remaining 90% after 5 minutes.

  3. In an AWS SAM template, which resource type is used to define a serverless REST API backed by Lambda?

    Answer: AWS::Serverless::Api

    AWS::Serverless::Api is the SAM transform shorthand for creating an API Gateway REST API integrated with Lambda.

  4. A DevOps engineer needs Lambda to process S3 events only from a specific prefix. Where should this filter be configured?

    Answer: Lambda event source mapping notification filter

    S3 event notification filters on prefix/suffix are configured in the event source mapping or S3 bucket notification configuration, not in Lambda itself.

  5. Which feature of Lambda allows a DevOps team to keep a function pre-initialized to eliminate cold start latency?

    Answer: Provisioned concurrency

    Provisioned concurrency initializes a specified number of execution environments so they are ready to respond immediately without cold starts.

  6. During a blue/green Lambda deployment via AWS CodeDeploy, which hook runs automated tests BEFORE traffic is shifted to the new version?

    Answer: BeforeAllowTraffic

    The BeforeAllowTraffic hook executes a Lambda function to run validation tests before CodeDeploy shifts any production traffic to the new version.

  7. A SAM template defines a DynamoDB table with the StreamSpecification enabled. Which SAM event type connects the stream to a Lambda function?

    Answer: DynamoDB

    The DynamoDB event type in a SAM template creates a Lambda event source mapping that reads records from a DynamoDB Streams stream.