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AWS · DVA-C02 · Developer – Associate
Write against AWS services, then ship and debug what you wrote.
Four domains, weighted 32 / 26 / 24 / 18. 65 questions in 130 minutes, 720 out of 1000 to pass. 15 of those 65 don't count toward your score, and nothing on screen tells you which.
- Questions weighted to the official domain split, so a mock matches the real mix
- Every item tagged to the domain and task it tests
- Readiness shown against 720, not as an invented percentage
Free practice across all four domains. No card required.
Last day to sit DVA-C02 is 1 December 2026. DVA-C03 registration opens 27 October 2026.
DVA-C02Development with AWS ServicesMedium
A Lambda function creates a new DynamoDB SDK client inside the handler on every invocation. Under sustained traffic, every invocation carries the client initialization cost, not just the first.
Which change removes that cost from most invocations? Select one.
One choice only. Your earliest pick was dropped.
0 of 1 selected
An original item written against the AWS exam guide, last checked 15 September 2026. Not a real exam question.
Out of scope
AWS lists the job tasks this exam will not ask
1+ years developing and maintaining applications using AWS services. Out of scope: Designing architectures; Designing and creating CI/CD pipelines; Administering IAM users and groups; Administering servers and operating systems; Designing AWS networking infrastructure.
AI-assisted development (code generation, automated review, test generation, CI/CD, error analysis, optimisation, AI integration security) — stated as pretest, unscored
How it's scored
You can fail a whole domain and still pass
AWS uses a compensatory model: you need to pass the exam overall, not each section. Your score is scaled 100–1000 with 720 to pass.
Unanswered questions are scored as incorrect and there's no guessing penalty, so there is never a reason to leave one blank.
DVA-C02 · How AWS scales a score100–1,000 · 720 to pass
You answered
72%of the questions correctly
720
Your scaled score lands somewhere around690–750Could go either way
Now change nothing except which form you were given
Same answers. Harder form, higher scaled score — that's what scaling is for. It's also why nobody can tell you the percentage you need.
Positions here are illustrative. AWS publishes the 100–1,000 scale and the 720 pass mark, but not the conversion from raw answers — which is the point. When a number can't be known exactly, a range is the honest way to report it.
Question types
Two question types, and one of them is where exams are lost
Multiple choice
One correct answer, three distractors. The bulk of the exam.
Multiple response
Two or more correct out of five or more options. Select every correct response to get the mark.
The guide names two response types. Distractors are designed to be plausible — the option a candidate with incomplete knowledge would pick.
The loop
Practice, sit, review, repeat
Step 1 is free. Steps 2 to 4 need a subscription.
certs.acedify.com/dva-c02
Practice · untimed
MediumA Lambda function creates a new DynamoDB SDK client inside the handler on every invocation. Under sustained traffic, every invocation carries the client initialization cost, not just the first.
Which change removes that cost from most invocations?
Enable provisioned concurrency on the function's alias.
Move the client instantiation outside the handler, into the initialization code.
Increase the function timeout.
Package the SDK in a Lambda layer instead of the deployment bundle.
Initialization code runs once per execution environment. Warm invocations reuse the client rather than rebuilding it. Domain: Development with AWS Services.
Click a step to see it.
What you get back
Not a prediction. A distance from the line.
Your readiness is a range, because it's an inference from the questions you've answered rather than a result you've earned. For a certification the outcome is binary, so the only question that matters is whether the whole range sits above 720.
DVA-C02 · 4 mocks completed
Where you stand
Borderline
577–748
Pass mark 720
Your range crosses the pass mark. On today's evidence it's a coin flip.
Three states
Try the three states. We won't show you a percentage chance of passing — nobody can calculate one honestly without years of real outcomes to calibrate against.
We won't show you a percentage chance of passing. Nobody can calculate one honestly without years of real outcomes behind it.
What it actually tests
Four domains, and the weights aren't even
| Domain | Weight | What it covers |
|---|---|---|
| Development with AWS Services | 32% | The biggest block. Lambda, DynamoDB, API Gateway, SDKs, and how you write against them. |
| Security | 26% | Credentials, encryption, IAM roles for applications — not administering users and groups. |
| Deployment | 24% | Shipping versions. Traffic shifting, infrastructure as code, and what happens when a deploy fails. |
| Troubleshooting and Optimization | 18% | Traces, logs, and why a request is slow. The smallest domain, and the one people skip. |
AWS publishes these as exact figures rather than ranges, and they apply to scored content. Last checked against the exam guide on 15 September 2026.
Exam facts
Prices vary by region. Check AWS for yours.
- Exam
- DVA-C02
- Credential
- AWS Certified Developer – Associate
- Level
- Associate
- Length
- 130 minutes
- Questions
- 65 total, 50 scored
- Unscored questions
- 15
- Question types
- Multiple choice, multiple response
- Score range
- 100–1,000
- Pass mark
- 720
- Scoring model
- Compensatory — overall score only
- Domains
- 4
- Assumed experience
- 1+ years developing and maintaining applications using AWS services
Pricing
Practice free. Pay when you want to know where you stand.
Pro
- Timed mocks at exam length, weighted 32 / 26 / 24 / 18
- A scaled score against the 720 pass mark
- Domain-weighted readiness, and your range over time
- Everything on every exam, one subscription
One subscription covers AIF-C01, CLF-C02, SAA-C03, DVA-C02, the Microsoft certifications, the Claude certifications, TOEFL, IELTS and the SAT.
The exam fee is separate and goes to AWS. We're prep, not registration.
Start practising for freeFAQ
DVA-C02 questions
Find out which domain is keeping you under 720.
Free practice across all four domains, no card. The timed mocks and the readiness range are there when you want them.
Start practising for freeAlso available for AIF-C01, CLF-C02, SAA-C03, the Microsoft certifications and the Claude certifications on the same subscription.