- A
Attach an IAM policy to the API Gateway role for cache access.
Why wrong: Incorrect: No additional IAM needed for API Gateway caching.
- B
Modify the Lambda function to store responses in ElastiCache.
Why wrong: Incorrect: API Gateway manages the cache, not Lambda.
- C
Enable API caching in the stage settings.
Correct: This turns on caching for the stage.
- D
Set a cache time-to-live (TTL) value.
Correct: TTL controls how long data is cached.
- E
Specify a cache cluster size (e.g., 0.5 GB).
Correct: You must allocate cache memory.
Question 1,075 of 1,616
Enabling API Gateway Caching for a Stage
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 company is using Amazon API Gateway to expose a REST API. The API is integrated with an AWS Lambda function. The developer wants to implement caching to improve performance. Which THREE steps are necessary to enable caching for a specific stage? (Choose THREE.)
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 API caching in the stage settings.
Option C is correct because API Gateway provides built-in caching at the stage level, which can be enabled directly in the stage settings without modifying the Lambda function or adding external services. This caching reduces the number of calls made to the backend Lambda function by serving cached responses for identical requests, improving performance and reducing latency.
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.
- ✗
Attach an IAM policy to the API Gateway role for cache access.
Why it's wrong here
Incorrect: No additional IAM needed for API Gateway caching.
- ✗
Modify the Lambda function to store responses in ElastiCache.
Why it's wrong here
Incorrect: API Gateway manages the cache, not Lambda.
- ✓
Enable API caching in the stage settings.
Why this is correct
Correct: This turns on caching for the stage.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Set a cache time-to-live (TTL) value.
Why this is correct
Correct: TTL controls how long data is cached.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Specify a cache cluster size (e.g., 0.5 GB).
Why this is correct
Correct: You must allocate cache memory.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think caching requires modifying the Lambda function (Option B) or adding IAM policies (Option A), when in fact API Gateway's stage-level caching is a simple toggle with configurable cluster size and TTL, and no backend changes are needed.
Detailed technical explanation
How to think about this question
API Gateway caching uses a dedicated, managed cache cluster that is automatically provisioned when caching is enabled for a stage. The cache key is based on the request parameters, headers, and stage variables, and the time-to-live (TTL) defaults to 300 seconds but can be set from 0 to 3600 seconds. In a real-world scenario, enabling caching with a 0.5 GB cluster can dramatically reduce Lambda invocation costs and latency for read-heavy APIs, but careful TTL tuning is required to avoid serving stale data for frequently updated resources.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Development with AWS Services — study guide chapter
Learn the concepts, then practise the questions
- →
Development with AWS Services practice questions
Targeted practice on this topic area only
- →
All DVA-C02 questions
1,616 questions across all exam domains
- →
AWS Certified Developer Associate DVA-C02 study guide
Full concept coverage aligned to exam objectives
- →
DVA-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related DVA-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Development with AWS Services practice questions
Practise DVA-C02 questions linked to Development with AWS Services.
Security practice questions
Practise DVA-C02 questions linked to Security.
Deployment practice questions
Practise DVA-C02 questions linked to Deployment.
Troubleshooting and Optimization practice questions
Practise DVA-C02 questions linked to Troubleshooting and Optimization.
DVA-C02 fundamentals practice questions
Practise DVA-C02 questions linked to DVA-C02 fundamentals.
DVA-C02 scenario practice questions
Practise DVA-C02 questions linked to DVA-C02 scenario.
DVA-C02 troubleshooting practice questions
Practise DVA-C02 questions linked to DVA-C02 troubleshooting.
Practice this exam
Start a free DVA-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
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 API caching in the stage settings. — Option C is correct because API Gateway provides built-in caching at the stage level, which can be enabled directly in the stage settings without modifying the Lambda function or adding external services. This caching reduces the number of calls made to the backend Lambda function by serving cached responses for identical requests, improving performance and reducing latency.
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
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More DVA-C02 practice questions
- A developer is troubleshooting an AWS Lambda function that is triggered by an S3 event. The function occasionally fails…
- A developer needs to call AWS APIs from application code running on EC2. Which credential source should the AWS SDK use…
- A developer needs to allow an IAM user in a different AWS account to assume a role in the developer's account. The role…
- A developer needs to grant an IAM role in Account B read-only access to objects in an S3 bucket in Account A. The bucket…
- An API Gateway HTTP API should allow access only to users authenticated by an external OIDC provider. Which authorizer t…
- A developer needs to allow an EC2 instance to read from a DynamoDB table. Which is the best practice to grant permission…
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.