DVA-C02 Development with AWS Services Practice Question
This DVA-C02 practice question tests your understanding of development with aws services. 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. A key principle to apply: lambda proxy integration passes the entire request to the Lambda function.. 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 building a serverless application using AWS Lambda and Amazon API Gateway. The API requires that the same Lambda function handle different HTTP methods (GET, POST, DELETE) for the same resource. The developer wants to minimize code and configuration. Which integration type should the developer use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Lambda proxy integration
Lambda proxy integration (option A) is correct because it automatically passes the entire HTTP request (method, headers, query parameters, path parameters) to the Lambda function as a single event object, allowing the same function to inspect the `httpMethod` field and branch logic for GET, POST, DELETE without any additional API Gateway mapping or transformation configuration. This minimizes both code (the function handles routing internally) and configuration (no need to define separate integration requests/responses per method).
Key principle: Lambda proxy integration passes the entire request to the Lambda function.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Lambda proxy integration
Why this is correct
With proxy integration, the whole request is passed to Lambda, allowing the function to handle multiple methods with minimal API Gateway setup.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Lambda proxy integration passes the entire request to the Lambda function.
✗
Lambda custom integration
Why it's wrong here
Custom integration requires mapping templates and more configuration to transform requests and responses.
✗
HTTP integration
Why it's wrong here
HTTP integration is for proxying to an HTTP endpoint, not directly to Lambda.
✗
Mock integration
Why it's wrong here
Mock integration is used for testing and returns a static response without invoking a backend.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'custom integration' (option B) with 'proxy integration' (option A), mistakenly thinking custom integration offers more flexibility when in fact it requires more configuration and does not automatically pass the full request context.
Detailed technical explanation
How to think about this question
Under the hood, Lambda proxy integration sends the entire API Gateway event as a JSON payload to the Lambda function, including `httpMethod`, `headers`, `queryStringParameters`, `pathParameters`, and `body`. The Lambda function must return a response in the exact format `{ statusCode, headers, body }` for API Gateway to interpret correctly. A real-world scenario is building a RESTful CRUD API where a single Lambda function inspects `event.httpMethod` to route to create, read, update, or delete logic, reducing the number of Lambda functions and simplifying deployment.
KKey Concepts to Remember
Lambda proxy integration passes the entire request to the Lambda function.
The Lambda function is responsible for parsing the HTTP method and request details.
It significantly reduces API Gateway configuration overhead for multi-method resources.
API Gateway acts as a thin proxy, forwarding all request context to Lambda.
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
Lambda proxy integration passes the entire request to the Lambda function.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Review lambda proxy integration passes the entire request to the Lambda function., then practise related DVA-C02 questions on the same topic to reinforce the concept.
Development with AWS Services — This question tests Development with AWS Services — Lambda proxy integration passes the entire request to the Lambda function..
What is the correct answer to this question?
The correct answer is: Lambda proxy integration — Lambda proxy integration (option A) is correct because it automatically passes the entire HTTP request (method, headers, query parameters, path parameters) to the Lambda function as a single event object, allowing the same function to inspect the `httpMethod` field and branch logic for GET, POST, DELETE without any additional API Gateway mapping or transformation configuration. This minimizes both code (the function handles routing internally) and configuration (no need to define separate integration requests/responses per method).
What should I do if I get this DVA-C02 question wrong?
Review lambda proxy integration passes the entire request to the Lambda function., then practise related DVA-C02 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Lambda proxy integration passes the entire request to the Lambda function.
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