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Most practice apps say "Incorrect — the answer is C" and move on. JT Exams shows you why every option is right or wrong, and lets you ask follow-ups like a real instructor is sitting next to you.
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Question you got wrong
Which of the following is the primary purpose of a DMZ in network security?
I picked 'hosts public-facing servers' but the answer says 'buffer zone between trust boundaries' — isn't that the same?
Servers in a DMZ do typically host public-facing services. But the question asks about the architectural purpose, not what lives inside it.
A DMZ creates a controlled buffer zone between your trusted internal network and an untrusted external network (the internet). Traffic from outside reaches the DMZ but can't directly reach internal systems — that's the security function.
Exam pattern: 'what lives in the DMZ' is implementation. 'Why the DMZ exists' is architecture. These questions are testing architectural understanding.
Can you give me a memory trick for remembering all the STP states in order?
Sure — the classic mnemonic is "Do Be Like Forwarding Data"...
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Try 4 Real DVA-C02 Questions
Actual exam-style questions spanning all 4 blueprint domains. Answer to reveal the explanation — and preview the AI Tutor.
A developer has an AWS Lambda function that processes messages from an Amazon SQS queue. The function is configured with a batch size of 10, reserved concurrency of 5, and a timeout of 5 minutes. The SQS queue has a large backlog, and CloudWatch metrics show high throttling (Throttles) for the Lambda function. The function is idempotent and can process up to 100 messages in a single invocation. What is the MOST effective way to increase throughput without increasing the reserved concurrency?
Select an answer to reveal the explanation and AI Tutor
A developer has an AWS Lambda function that needs to read objects from an S3 bucket in another account. The Lambda function's execution role includes an IAM policy that allows s3:GetObject on the bucket. The bucket owner has added a bucket policy that grants s3:GetObject to the Lambda execution role. However, the Lambda function receives Access Denied errors. The S3 bucket uses SSE-KMS for encryption. What is the most likely cause?
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A developer is using AWS CodeDeploy with a blue/green deployment strategy to update an application running on Amazon ECS with the Fargate launch type. After the new (green) task set is created and traffic is shifted to it, users immediately report errors when trying to write data. The developer discovers that the green task set is connecting to a different database than the blue task set. The database endpoints are configured in the ECS task definition. What is the simplest way to prevent this issue in future deployments?
Select an answer to reveal the explanation and AI Tutor
A developer deployed a new version of an AWS Lambda function that is part of a serverless application. The function uses an Amazon DynamoDB table as a data store. After deployment, the developer notices that the function's latency has increased significantly for some requests. CloudWatch traces show that the increase is due to DynamoDB throttle events. The function is configured with a reserved concurrency of 100 and the DynamoDB table has 5 read capacity units (RCUs) and 5 write capacity units (WCUs). What is the most effective way to reduce the throttling while maintaining application performance?
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Answer all 4 questions to see your domain score breakdown
Your Progress Dashboard
See exactly where to focus next
After ~50 questions, JT Exams knows your weak spots. The dashboard shows accuracy per domain, coverage progress, and automatically routes your next session toward the areas that need work.
- Colour-coded domain bars (weak → strong at a glance)
- Coverage % per domain so you know what you haven't touched
- Smart next-action card surfaced every session
DVA-C02 Progress
213 questions answered · 71% overall
Focus: Deployment (48%)
Adaptive routing is sending you more questions here →
Mock scores shown for illustration. Your actual dashboard builds from your first answered question.
AI-Powered Learning
The AI that teaches — not just tests
Most practice apps mark you right or wrong and move on. JT Exams explains the why behind every question, adapts to your weak domains, and lets you ask follow-up questions like you would a real instructor.
AI Tutor
After every question, ask the AI anything — plain-English explanations, analogies, deeper dives. Like having a Cisco instructor on call.
Why wrong answers are wrong
Every incorrect option gets its own explanation. Examiners write clever distractors — understanding the traps is what separates first-attempt passes.
Read Aloud
Listen to any question, option, or explanation hands-free. Study while commuting, walking, or away from a screen.
Adaptive Routing
The system tracks domain accuracy across every session and automatically sends more questions to your weak areas until you're balanced across the blueprint.
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Monthly
£9.99
per month
- All 300 questions
- Unlimited AI Tutor
- Full domain analytics
- Streak & XP
- Daily challenge
3-Month
£24.99
3 months · £8.33/mo
- All 300 questions
- Unlimited AI Tutor
- Full domain analytics
- Streak & XP
- Daily challenge
- Save 17% vs monthly
Annual
£79
per year · £6.58/mo
- All 300 questions
- Unlimited AI Tutor
- Full domain analytics
- Streak & XP
- Daily challenge
- Save 34% vs monthly
Feature
Free Trial
Pro Plans
Practice questions
50 free
All 300
Domain analytics
Overview only
Full breakdown
AI Tutor
5/day
Unlimited
Daily challenge
—
✓
Spaced repetition
—
✓
Streak & XP
—
✓
Study notes
—
✓
Leaderboard
—
✓
Why JT Exams
Traditional prep vs. adaptive learning
Practice question banks have existed for decades. Here's what's actually different.
What you need
Traditional prep
JT Exams
Know why you got it wrong
Right/Wrong only
Why each option is right or wrong
Study your weakest areas
You decide — or guess
Auto-routed to weak domains
Retain what you've learned
No repetition system
Spaced repetition built-in
Ask follow-up questions
No — static text
AI Tutor: unlimited follow-ups
Track domain-level gaps
Overall score only
Per-domain accuracy + progress
Build a study habit
Self-managed
Daily challenge + streak tracking
Know when you're ready
Guesswork
Exam-readiness score per domain
Why AWS Developer Associate?
Earn a recognized credential that validates your skills and opens new career opportunities.
Prep time: 2–4 months · Difficulty: Intermediate
Opens doors to
Streak Tracking
Build a daily study habit with streak protection
Community Q&A
In-app forum: ask about specific questions, see how others explained tricky concepts, share study strategies. No Discord or Reddit tab required.
Domain Analytics
See exactly which topics need more work
Leaderboard
Compete daily and track your relative progress
Exam Blueprint
What's on the DVA-C02 Exam
Official Amazon Web Services domain weights · 300 practice questions covering every topic
Sign up free to track your progress per domain
What Candidates Say
Passed on the first attempt.
The combination of adaptive routing and spaced repetition meant I wasn't just grinding questions — I was actually filling gaps. First attempt pass.
Alex R.
Certified · passed first attempt
The score card after each practice session showed exactly which domains needed more time. I stopped guessing what to study and started following the data.
Jordan P.
Certified · 3 months prep
Why Trust Our Questions?
Written by certified engineers. Verified against the blueprint.
Every question is written by Amazon Web Services-certified professionals who passed the DVA-C02 exam, then cross-referenced against the official exam blueprint to ensure accuracy and real-exam relevance.
Blueprint-aligned
Every question maps to an official DVA-C02 domain and objective. Nothing off-topic, nothing outdated. We track vendor exam updates and revise accordingly.
Written by practitioners
Questions are authored by Amazon Web Services-certified engineers with hands-on industry experience — not AI-generated or lifted from textbooks. Real scenarios, real distractors.
Kept current
When Amazon Web Services revises the exam, we update the question bank. The DVA-C02 content you practice against always reflects the live exam version.
FAQ
Frequently Asked Questions
How many questions are on the AWS Developer Associate DVA-C02 exam?
The DVA-C02 exam contains approximately 65–75 questions, including multiple choice, drag-and-drop, and scenario-based items. You have 130 minutes to complete the exam.
What is the passing score for the DVA-C02?
The passing score for the DVA-C02 is 720 out of 1000. Amazon Web Services uses a scaled scoring system, so the raw score is converted before being reported.
What topics does the DVA-C02 cover?
The DVA-C02 exam covers 4 domains: Development with AWS Services (null%), Security (null%), Deployment (null%), Troubleshooting and Optimization (null%). JT Exams includes practice questions for every domain, weighted to match the official blueprint.
How long does it take to prepare for the AWS Developer Associate?
Most candidates spend 2–4 months preparing for the DVA-C02, depending on their background and experience. JT Exams' domain analytics show you exactly where to focus so you're not wasting time on topics you already know.
How many practice questions does JT Exams have for DVA-C02?
JT Exams currently has 300 practice questions for the DVA-C02, covering all 4 exam domains. New questions are added regularly.
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What to study next
Related Certifications
Pass DVA-C02 on your first attempt.
Most candidates who practice at least 20 questions per day across all domains are exam-ready within 2–4 months. JT Exams tracks every domain so you never waste a study session.
Tip: Book your exam date before you feel ready — candidates with a deadline pass at twice the rate.
300 questions · All 4 domains · AI-powered explanations
300
Questions
4
Domains covered
2–4 months
Avg. prep time