nerdexam
Amazon

DVA-C02 · Question #270

A developer is building a serverless application that runs on AWS. The developer wants to create an accelerated development workflow that deploys incremental changes to AWS for testing. The developer

The correct answer is A. Use the AWS Serverless Application Model (AWS SAM) to build the application. Use the sam. The AWS SAM CLI sam sync command synchronizes local code and infrastructure changes incrementally to AWS, enabling rapid iterative testing without redeploying the entire application stack on every commit.

Submitted by parkjh· Mar 5, 2026Development with AWS Services

Question

A developer is building a serverless application that runs on AWS. The developer wants to create an accelerated development workflow that deploys incremental changes to AWS for testing. The developer wants to deploy the incremental changes but does not want to fully deploy the entire application to AWS for every code commit. What should the developer do to meet these requirements?

Options

  • AUse the AWS Serverless Application Model (AWS SAM) to build the application. Use the sam
  • BUse the AWS Serverless Application Model (AWS SAM) to build the application. Use the sam init
  • CUse the AWS Cloud Development Kit (AWS CDK) to build the application. Use the cdk synth
  • DUse the AWS Cloud Development Kit (AWS CDK) to build the application. Use the cdk bootstrap

How the community answered

(55 responses)
  • A
    78% (43)
  • B
    2% (1)
  • C
    7% (4)
  • D
    13% (7)

Why each option

The AWS SAM CLI `sam sync` command synchronizes local code and infrastructure changes incrementally to AWS, enabling rapid iterative testing without redeploying the entire application stack on every commit.

AUse the AWS Serverless Application Model (AWS SAM) to build the application. Use the samCorrect

The `sam sync` command (and its `--watch` mode) detects changes to Lambda function code and configuration, updating only the modified resources in the cloud. This provides a fast feedback loop for testing incremental changes without triggering a full CloudFormation deployment for each commit.

BUse the AWS Serverless Application Model (AWS SAM) to build the application. Use the sam init

The `sam init` command scaffolds a new SAM project from a template; it does not deploy or sync changes to AWS and is a one-time project initialization command.

CUse the AWS Cloud Development Kit (AWS CDK) to build the application. Use the cdk synth

The `cdk synth` command synthesizes a CloudFormation template from CDK code locally but does not deploy or incrementally synchronize any resources to AWS.

DUse the AWS Cloud Development Kit (AWS CDK) to build the application. Use the cdk bootstrap

The `cdk bootstrap` command provisions the CDK toolkit infrastructure (S3 bucket, IAM roles) required for CDK deployments in an account/region; it does not deploy application code or provide incremental updates.

Concept tested: AWS SAM CLI sam sync for incremental serverless deployments

Source: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/using-sam-cli-sync.html

Community Discussion

No community discussion yet for this question.

Sign up to join the discussion
Full DVA-C02 Practice