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2. You need to setup a mechanism to put controls in place to notify you when you have a spike in Lambda concurrency. What should you do?
Answer
Correct Answer:
Deploy a CloudWatch alarm that notifies you when function metrics exceed your threshold. Create an AWS budget to monitor costs.
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3. What programming language does AWS Lambda support?
Answer
Correct Answer:
All of these answers
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4. What service deploys Lambdas regionally?
Answer
Correct Answer:
CloudFront
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5. What is the relationship between SAM template and CloudFormation template files?
Answer
Correct Answer:
SAM templates are a superset of CloudFormation templates. SAM templates include additional resource types.
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6. When can you change the execution role of a Lambda?
Answer
Correct Answer:
Anytime via configuration
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7. What is included in an exported Lambda deployment package?
Answer
Correct Answer:
Zip file of all related files
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8. To make Lambdas more testable, it is AWS best practice to separate which of these?
Answer
Correct Answer:
Lambda handler from core logic
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9. You need to set an S3 event trigger on your Lambda to respond when data is added to your bucket from another S3 bucket. Which event type do you configure?
Answer
Correct Answer:
PUT
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10. What can trigger a Lambda function execution?
Answer
Correct Answer:
An SNS topic
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11. Lambdas are monitored by default using which service?
Answer
Correct Answer:
CloudWatch
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12. What kind of packages can you use with Node.js for Lambdas?
Answer
Correct Answer:
NPM
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13. What action is needed before you can test a Lambda?
Answer
Correct Answer:
Configure a test event
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14. You are creating a Lambda to trigger on change to files in an S3 bucket. Where should you put the bucket name?
Answer
Correct Answer:
In a Lambda environment variable
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15. You need to use a Lambda to provide backend logic to your website. Which service do you use to make your Lambda available to your website?
Answer
Correct Answer:
API Gateway
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16. How are environment variables stored?
Answer
Correct Answer:
Key-value pairs
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17. Basic Lambda permissions include permissions for what?
Answer
Correct Answer:
Updating log groups
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18. What is AWS best practice for Lambda configuration?
Answer
Correct Answer:
Overprovision memory to run your functions faster and reduce your costs. Do not overprovision your function timeout settings.
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19. How do you stop a running Lambda that is stuck in a recursive loop?
Answer
Correct Answer:
Set the function concurrent execution limit to 0 while you update the code.
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20. Where is the disk space allocated for Lambda functions?
Answer
Correct Answer:
/tmp
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21. What is the fastest way to get started with Lambda?
Answer
Correct Answer:
Use a blueprint.
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22. How is the cost associated with Lambda function calculated?
Answer
Correct Answer:
Compute time
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23. You need to make your Lambda available to services in multiple VPCs. What do you do?
Answer
Correct Answer:
Configure all application VPCs to be peered.
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24. You are testing your stream-based application and the associated Lambda. AWS best practice advises you to test by varying what?
Answer
Correct Answer:
Batch and record sizes
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25. How are CloudWatch actions configured?
Answer
Correct Answer:
Manually
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26. Outbound connections from Lambdas must be _.
Answer
Correct Answer:
Both of these answers
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27. Which is an equivalent and valid tag for a pair of Lambdas?
Answer
Correct Answer:
Department:Sales,department:sales
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28. What are listed downstream resources based on?
Answer
Correct Answer:
The Lambda configuration
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29. How do you author a Lambda in a programming language that AWS does not support?
Answer
Correct Answer:
Create a Lambda layer with a custom runtime and reference the layer in your lambda
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30. What can AWS Amplify NOT do for a Lambda?
Answer
Correct Answer:
Be an event source
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31. What does Lambda logging include?
Answer
Correct Answer:
Logging streams
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32. You can restrict the scope of a user's permissions by specifying which two items in an IAM policy?
Answer
Correct Answer:
Resources and conditions
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33. How are computing resources allocated to Lambdas?
Answer
Correct Answer:
Proportionally
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34. What facilitates continuous delivery of Lambdas?
Answer
Correct Answer:
CodeDeploy
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35. You are performance-testing your Lambda to verify that you set the memory size adequately. Where do you verify the execution overhead?
Answer
Correct Answer:
Lambda logs.
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36. How can a developer provide Lambda code?
Answer
Correct Answer:
All of these answers
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37. In what style must you write Lambda code?
Answer
Correct Answer:
Stateless
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38. Lambdas allow for running of what other things?
Answer
Correct Answer:
All of these answers
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39. What may be provided for environment variables?
Answer
Correct Answer:
An AWS KMS key
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40. It is AWS best practice to enable Lambda logging by which of these methods.
Answer
Correct Answer:
Use Lambda metrics and CloudWatch alarms.
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41. What can you use to monitor function invocations?
Answer
Correct Answer:
CLoudTrail
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42. You need to build a continuous integration/deployment pipeline for a set of Lambdas. What should you do?
Answer
Correct Answer:
Create CloudFormation templates and deploy them using AWS CodePipeline.
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43. What adds tracing capabilities to a Lambda?
Answer
Correct Answer:
AWS X-Ray
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