- A
Create a VPC endpoint for API Gateway.
A VPC endpoint allows API Gateway to be accessed privately from within the VPC.
- B
Attach a resource policy to the API Gateway API that denies access unless the request originates from the VPC.
Resource policies can restrict access based on the source VPC.
- C
Use an API key that is only known within the VPC.
Why wrong: API keys are not tied to network origin.
- D
Configure the Lambda function to be VPC-enabled.
Why wrong: This allows Lambda to access resources in a VPC, but does not restrict API Gateway access.
- E
Create a VPC endpoint for Lambda.
Why wrong: Lambda does not have a VPC endpoint; API Gateway does.
Question 339 of 1,616
API Gateway Private REST API with VPC Endpoint
This DVA-C02 practice question tests your understanding of development with aws services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 using Amazon API Gateway to expose a Lambda function as a REST API. The API should only be accessible from a specific VPC. Which TWO steps are required to achieve this? (Choose TWO.)
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
✓
Create a VPC endpoint for API Gateway.
Option A is correct because creating a VPC endpoint for API Gateway (of type `execute-api`) allows API Gateway to be accessed privately from within a specific VPC without traversing the public internet. This endpoint uses AWS PrivateLink to provide a private IP address within the VPC, ensuring traffic stays within the AWS network.
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.
- ✓
Create a VPC endpoint for API Gateway.
Why this is correct
A VPC endpoint allows API Gateway to be accessed privately from within the VPC.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Attach a resource policy to the API Gateway API that denies access unless the request originates from the VPC.
Why this is correct
Resource policies can restrict access based on the source VPC.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use an API key that is only known within the VPC.
Why it's wrong here
API keys are not tied to network origin.
- ✗
Configure the Lambda function to be VPC-enabled.
Why it's wrong here
This allows Lambda to access resources in a VPC, but does not restrict API Gateway access.
- ✗
Create a VPC endpoint for Lambda.
Why it's wrong here
Lambda does not have a VPC endpoint; API Gateway does.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think enabling the Lambda function to be VPC-enabled (Option D) is sufficient to restrict API access, but this only affects the Lambda's outbound connectivity, not the inbound API Gateway endpoint.
Detailed technical explanation
How to think about this question
The VPC endpoint for API Gateway uses AWS PrivateLink, which creates an elastic network interface (ENI) in the VPC with a private IP address. The resource policy on the API Gateway API must use the `aws:SourceVpce` condition key to deny requests that do not originate from that specific VPC endpoint, ensuring that only traffic from the VPC is allowed. This combination provides both network-level and policy-level enforcement for private API access.
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.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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?
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a VPC endpoint for API Gateway. — Option A is correct because creating a VPC endpoint for API Gateway (of type `execute-api`) allows API Gateway to be accessed privately from within a specific VPC without traversing the public internet. This endpoint uses AWS PrivateLink to provide a private IP address within the VPC, ensuring traffic stays within the AWS network.
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.
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Last reviewed: Jul 4, 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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