- A
AWS::ApiGateway::DomainName
Why wrong: This is a lower-level CloudFormation resource. While it can be used, SAM provides a higher-level abstraction that is simpler.
- B
AWS::Serverless::Api
The AWS::Serverless::Api resource has a Domain property that allows you to specify a custom domain name, certificate ARN, and other settings. SAM handles the creation of the necessary DomainName and BasePathMapping resources automatically.
- C
AWS::ApiGateway::BasePathMapping
Why wrong: This resource maps a base path to a domain name, but you still need a DomainName resource. Using SAM's Domain property is more efficient.
- D
AWS::Route53::RecordSet
Why wrong: This creates a DNS record, which is often needed to point to the custom domain, but it does not create the API Gateway custom domain configuration itself.
DVA-C02 Deployment Practice Question
This DVA-C02 practice question tests your understanding of deployment. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A developer is deploying a serverless application using AWS SAM. The application includes an API Gateway REST API and a Lambda function. The developer wants to set up a custom domain name for the API in the production stage. Which resource should the developer define in the SAM template to achieve this with minimal effort?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
AWS::Serverless::Api
The AWS::Serverless::Api resource in an AWS SAM template provides a high-level abstraction that simplifies the configuration of API Gateway REST APIs, including the ability to set up a custom domain name via the Domain property. This approach requires minimal effort because SAM automatically creates the underlying AWS::ApiGateway::DomainName and AWS::ApiGateway::BasePathMapping resources, handles the TLS certificate association, and manages the stage deployment. Defining a raw AWS::ApiGateway::DomainName would require additional manual configuration for base path mapping and stage integration, making the Serverless::Api the most efficient choice.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS::ApiGateway::DomainName
Why it's wrong here
This is a lower-level CloudFormation resource. While it can be used, SAM provides a higher-level abstraction that is simpler.
- ✓
AWS::Serverless::Api
Why this is correct
The AWS::Serverless::Api resource has a Domain property that allows you to specify a custom domain name, certificate ARN, and other settings. SAM handles the creation of the necessary DomainName and BasePathMapping resources automatically.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS::ApiGateway::BasePathMapping
Why it's wrong here
This resource maps a base path to a domain name, but you still need a DomainName resource. Using SAM's Domain property is more efficient.
- ✗
AWS::Route53::RecordSet
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think they must define the low-level AWS::ApiGateway::DomainName resource directly, overlooking that AWS SAM's AWS::Serverless::Api provides a built-in Domain property that automates the entire custom domain setup with minimal code.
Detailed technical explanation
How to think about this question
Under the hood, the AWS::Serverless::Api resource's Domain property triggers SAM to generate an AWS::ApiGateway::DomainName with an edge-optimized or regional endpoint type, automatically referencing an AWS::ApiGateway::BasePathMapping to the stage. SAM also handles the TLS certificate validation by requiring a reference to an AWS::CertificateManager::Certificate ARN, ensuring HTTPS termination at the API Gateway edge. In a real-world scenario, if you need to support multiple base paths (e.g., /v1 and /v2) under the same custom domain, you would still need to define separate BasePathMapping resources manually, as SAM's Domain property only creates a single mapping to the root path.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS::Serverless::Api — The AWS::Serverless::Api resource in an AWS SAM template provides a high-level abstraction that simplifies the configuration of API Gateway REST APIs, including the ability to set up a custom domain name via the Domain property. This approach requires minimal effort because SAM automatically creates the underlying AWS::ApiGateway::DomainName and AWS::ApiGateway::BasePathMapping resources, handles the TLS certificate association, and manages the stage deployment. Defining a raw AWS::ApiGateway::DomainName would require additional manual configuration for base path mapping and stage integration, making the Serverless::Api the most efficient choice.
What should I do if I get this DVA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 11, 2026
This DVA-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DVA-C02 exam.
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