- A
Set the TTL (time-to-live) for the /products GET method to a non-zero value.
Why wrong: TTL is set after caching is enabled, not the enabling step.
- B
Enable caching on the /products GET method and specify cache key parameters.
This configures caching specifically for that method.
- C
Flush the API cache to start fresh.
Why wrong: Flushing is for clearing existing cache, not enabling.
- D
Enable caching on the API stage and set the 'Cache Status' to 'AVAILABLE'.
Why wrong: Enabling caching on the stage alone does not cache individual methods unless configured.
Question 583 of 1,616
API Gateway Per-Method Caching
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. 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 building a REST API using API Gateway and Lambda. The API must support multiple HTTP methods and use a custom domain name with an SSL certificate. The developer wants to enable caching for the /products GET endpoint to reduce latency. Which step is essential to enable caching for this specific endpoint?
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
✓
Enable caching on the /products GET method and specify cache key parameters.
Option B is correct because enabling caching on a specific method (e.g., /products GET) in API Gateway allows you to configure cache key parameters, which control how the cache key is generated based on request parameters. This is essential for per-endpoint caching, as it ensures that only responses for the /products GET endpoint are cached, reducing latency for that specific method without affecting other endpoints.
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.
- ✗
Set the TTL (time-to-live) for the /products GET method to a non-zero value.
Why it's wrong here
TTL is set after caching is enabled, not the enabling step.
- ✓
Enable caching on the /products GET method and specify cache key parameters.
Why this is correct
This configures caching specifically for that method.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Flush the API cache to start fresh.
Why it's wrong here
Flushing is for clearing existing cache, not enabling.
- ✗
Enable caching on the API stage and set the 'Cache Status' to 'AVAILABLE'.
Why it's wrong here
Enabling caching on the stage alone does not cache individual methods unless configured.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse enabling caching at the stage level (which caches all methods) with enabling it on a specific method, and they overlook the requirement to specify cache key parameters for per-endpoint control.
Detailed technical explanation
How to think about this question
Under the hood, API Gateway caching works by storing responses in a dedicated cache cluster per stage. When you enable caching on a specific method, you can define cache key parameters (e.g., query strings, headers) that determine uniqueness; the cache key is a hash of these parameters plus the method and path. In a real-world scenario, if you have a /products GET endpoint with pagination via ?page=1, you would set the 'page' query parameter as a cache key parameter to avoid serving stale or incorrect paginated results.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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: Enable caching on the /products GET method and specify cache key parameters. — Option B is correct because enabling caching on a specific method (e.g., /products GET) in API Gateway allows you to configure cache key parameters, which control how the cache key is generated based on request parameters. This is essential for per-endpoint caching, as it ensures that only responses for the /products GET endpoint are cached, reducing latency for that specific method without affecting other endpoints.
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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