# How can you increase the CPU resources for your Lambda? - [ ] `Increase the configured CPU value` - [ ] `Increase the configured timeout value` - [x] `Increase the configured memory value` - [ ] `Increase the configured concurrency value` # How can additional code or content be provided for your Lambda? - [ ] `blocks` - [x] `layers` - [ ] `aliases` - [ ] `handlers` # How can Step Functions call Lambdas? - [ ] `in sequence` - [x] `both of these answers` - [ ] `neither of these answers` - [ ] `in parallel` # Which AWS CLI command invokes a function? - [ ] `aws lambda invoke --function ReturnBucketName outputfile.txt` - [ ] `aws lambda execute --function-name ReturnBucketName outputfile.txt` - [x] `aws lambda invoke --function-name ReturnBucketName outputfile.txt` - [ ] `aws lambda execute --function ReturnBucketName outputfile.txt` # What adds tracing capabilities to a Lambda? - [ ] `AWS Trace` - [ ] `CloudStack` - [ ] `CloudTrail` - [x] `AWS X-Ray` # You need to build a continuous integration/deployment pipeline for a set of Lambdas. What should you do? - [ ] `Create configuration files and deploy them using AWS CodePipeline.` - [ ] `Create CloudFormation templates and deploy them using AWS CodeBuild` - [ ] `Create configuration file and deploy using AWS CodeBuild` - [x] `Create CloudFormation templates and deploy them using AWS CodePipeline.` # What can you use to monitor function invocations? - [ ] `API Gateway` - [ ] `S3` - [ ] `SAS` - [x] `CLoudTrail` # It is AWS best practice to enable Lambda logging by which of these methods. - [ ] `Use S3 metrics and CloudWatch alarms` - [ ] `Create custom metrics within your Lambda code.` - [ ] `Create custom metrics within your CloudWatch code.` - [x] `Use Lambda metrics and CloudWatch alarms.` # What may be provided for environment variables? - [ ] `an SSL certificate` - [ ] `a bitmask` - [x] `an AWS KMS key` - [ ] `an HTTP protocol ` # Lambdas allow for running of what other things? - [ ] `binaries.` - [x] `all of these answers` - [ ] `executables` - [ ] `Shell scripts` # In what style must you write Lambda code? - [ ] `MVC` - [ ] `virtual` - [x] `stateless` - [ ] `protocol` # How can a developer provide Lambda code? - [ ] `by uploading a .zip file` - [x] `all of these answers` - [ ] `by editing inline` - [ ] `from an S3 bucket` # You are performance-testing your Lambda to verify that you set the memory size adequately. Where do you verify the execution overhead? - [ ] `CLoudWatch logs` - [ ] `DynamoDB logs` - [ ] `S3 logs` - [x] `Lambda logs.` # What facilitates continuous delivery of Lambdas? - [ ] `CodeStack` - [ ] `ElasticStack` - [ ] `Mobile Hub` - [x] `CodeDeploy` # How are computing resources allocated to Lambdas? - [x] `proportionally` - [ ] `equally` - [ ] `periodically` - [ ] `daily` # You can restrict the scope of a user's permissions by specifying which two items in an IAM policy? - [ ] `resources and users` - [x] `resources and conditions` - [ ] `events and users` - [ ] `events and conditions` # What does Lambda logging include? - [x] `logging streams` - [ ] `rotating streams` - [ ] `logging events` - [ ] `advancing log groups` # What can AWS Amplify NOT do for a Lambda? - [ ] `create a Lambda` - [x] `be an event source` - [ ] `assign an IAM role` - [ ] `delete a Lambda` # How do you author a Lambda in a programming language that AWS does not support? - [ ] `Create a Lambda function with a custom runtime and reference the function in your Lambda` - [x] `Create a Lambda layer with a custom runtime and reference the layer in your lambda` - [ ] `You cannot use Lambda in this situation` - [ ] `Create a Lambda function with a custom runtime` # What are listed downstream resources based on? - [ ] `the execution policy` - [x] `the Lambda configuration` - [ ] `the Lambda nodes` - [ ] `the IAM user` # Which is an equivalent and valid tag for a pair of Lambdas? - [ ] `department:Sales,department:Sales` - [x] `department:Sales,department:sales` - [ ] `aws:demo;aws:demo` - [ ] `aws:demo;aws:DEMO` # Outbound connections from Lambdas must be `_`. - [ ] `neither of these answers` - [ ] `UDP/IP` - [ ] `TCP/IP` - [x] `both of these answers` # How are CloudWatch actions configured? - [ ] `automatically` - [ ] `none of these answers` - [x] `manually` - [ ] `ad hoc` # You are testing your stream-based application and the associated Lambda. AWS best practice advises you to test by varying what? - [ ] `stream and record sizes` - [ ] `stream and shard sizes` - [x] `batch and record sizes` - [ ] `batch and shard sizes` # You need to make your Lambda available to services in multiple VPCs. What do you do? - [ ] `Place each subnet in a VPC. Associate all subnets to your Lambda.` - [ ] `Place all subnets in a VPC. Associate all subnets to your Lambda.` - [ ] `Configure your Lambda to be available to multiple VPCs.` - [x] `Configure all application VPCs to be peered.` # How is the cost associated with Lambda function calculated? - [ ] `number of function calls` - [ ] `amount of code run` - [x] `compute time` - [ ] `amount of infrastructure used` # What is the fastest way to get started with Lambda? - [ ] `Author a Lambda from scratch.` - [x] `Use a blueprint.` - [ ] `Use a .zip deployment package.` - [ ] `Use the serverless app repository.` # Where is the disk space allocated for Lambda functions? - [x] `/tmp` - [ ] `/default` - [ ] `/temp` - [ ] `/ds` # How do you stop a running Lambda that is stuck in a recursive loop? - [ ] `Delete the function.` - [x] `Set the function concurrent execution limit to 0 while you update the code.` - [ ] `Reset the function.` - [ ] `Set the function concurrent execution limit to 100 while you update the code.` # What is AWS best practice for Lambda configuration? - [x] `Overprovision memory to run your functions faster and reduce your costs. Do not overprovision your function timeout settings.` - [ ] `Overprovision memory and your function timeout settings to run your functions faster and reduce your costs.` - [ ] `Do not overprovision memory. Overprovision your function timeout settings to run your functions faster and reduce costs.` - [ ] `Do not overprovision memory. Do not overprovision your function timeout settings to run your functions faster and reduce costs.` # Basic Lambda permissions include permissions for what? - [ ] `removing log groups` - [ ] `none of these answers` - [ ] `creating log groups` - [x] `updating log groups` # How are environment variables stored? - [ ] `DynamoDB tables` - [x] `key-value pairs` - [ ] `S3 buckets` - [ ] `none of these answers` # 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? - [ ] `S3` - [x] `API Gateway` - [ ] `X-Ray` - [ ] `DynamoDB` # You are creating a Lambda to trigger on change to files in an S3 bucket. Where should you put the bucket name? - [ ] `in the Lambda function code` - [x] `in a Lambda environment variable` - [ ] `in the Lambda tags` - [ ] `in another S3 bucket` # What action is needed before you can test a Lambda? - [ ] `Deploy the Lambda` - [ ] `Export the function` - [ ] `none of these answers` - [x] `Configure a test event` # What kind of packages can you use with Node.js for Lambdas? - [ ] `Fleece` - [x] `NPM` - [ ] `none of these answers` - [ ] `Pod` # Lambdas are monitored by default using which service? - [ ] `CloudTrail` - [x] `CloudWatch` - [ ] `CloudFormation` - [ ] `LogWatch` # What can trigger a Lambda function execution? - [ ] `a table definition` - [ ] `queue isolation` - [ ] `STS Write` - [x] `an SNS topic` # 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? - [ ] `POST` - [ ] `"All object create events"` - [x] `PUT` - [ ] `COPY` # To make Lambdas more testable, it is AWS best practice to separate which of these? - [ ] `Lambda configuration from logging code` - [ ] `Lambda handler from logging code` - [x] `Lambda handler from core logic` - [ ] `Lambda configuration from core logic` # What is included in an exported Lambda deployment package? - [ ] `YAML definition` - [ ] `CloudFormation stack configuration` - [ ] `SAML deployment stack` - [x] `Zip file of all related files` # When can you change the execution role of a Lambda? - [ ] `only at creation` - [ ] `only before deployment` - [ ] `never` - [x] `anytime via configuration` # What is the relationship between SAM template and CloudFormation template files? - [x] SAM templates are a superset of CloudFormation templates. SAM templates include additional resource types. - [ ] SAM templates have some overlap with CloudFormation templates. Both SAM and CloudFormation templates include resource types that are not in the other type of template. - [ ] CloudFormation templates are a superset of SAM templates. CloudFormation templates include additional resource types. - [ ] SAM templates are a different name for CloudFormation templates. Both template types include the same resource types. # What service deploys Lambdas regionally? - [ ] `EdgeCloud` - [ ] `CloudEdge` - [x] `CloudFront` - [ ] `CloudStack` # What programming language does AWS Lambda support? - [ ] `custom` - [x] `all of these answers` - [ ] `Java` - [ ] `Ruby` # 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? - [ ] Deploy a CloudTrail alarm that notifies you when function metrics exceed your threshold. Create an AWS budget to monitor costs. - [x] Deploy a CloudWatch alarm that notifies you when function metrics exceed your threshold. Create an AWS budget to monitor costs. - [ ] Deploy a CloudWatch alarm that notifies you when function metrics exceed your threshold. Create an AWS CostMonitor to monitor costs. - [ ] Deploy a CloudTrail alarm that notifies you when function metrics exceed your threshold. Create an AWS CostMonitor to monitor costs. # You want to minimize cold start time for your Lambda. What do you do? - [ ] Add extra code to check if the transient cache, or the /tmp directory, has the data that you stored. - [ ] Add extra code to check if the permanent cache, or the /cache directory, has the data that you stored. - [ ] Do nothing. AWS minimizes cols start time by default. - [ ] Create a warm-up Lambda that calls your Lambda every minute [Reference](https://aws.amazon.com/blogs/compute/new-for-aws-lambda-predictable-start-up-times-with-provisioned-concurrency/ # When is Lambda code stored encrypted? - [x] at rest - [ ] at runtime - [ ] at deployment - [ ] non of these answers [Reference](https://docs.aws.amazon.com/whitepapers/latest/security-overview-aws-lambda/lambda-functions-and-layers.html) # When you use a resource-based policy to give a service, resource, or account access to your function, how can you apply the scope of that permission?? - [ ] at the function levelat the function level - [ ] at the alias or function levelat the alias or function level - [ ] at the version, alias, or function levelat the version, alias, or function level - [ ] at the version or function level # Lambda can read events from which other AWS services? (ref-https://docs.aws.amazon.com/lambda/latest/dg/lambda-services.html) - [ ] Kinesis, S3, and SQS - [ ] Kinesis, S3, and SNS - [ ] Kinesis, DynamoDB, and SNS - [ ] Kinesis, DynamoDB, and SQS