Original scenarios
We write practice around public skills, real design constraints, and plausible technical decisions—not copied exam content.
WHY PREP WITH PROOF EXISTS
Practice should build understanding, not memorized answers.
Prep With Proof is an independent practice platform for Microsoft, NVIDIA and PyTorch certification learners. We focus on original scenarios, explanations for every answer option and a study report that helps you decide what to revise next.
Try 3 DP-800 questions free →
Evidence over authority
Source coverage is disclosed on each exam page. DP-800 includes Microsoft Learn evidence; imported banks may contain existing links or still need question-level source review. We do not treat importing a bank as a fresh verification.
Confidence is data
Correctness and confidence are measured separately. Wrong + sure is a different learning problem from wrong + guessing.
Corrections stay visible
Challenges are reviewed against current documentation. Weak evidence means flag, correct, or remove—not defend automatically.
Hamdy Mostafa
Prep With Proof is created by Hamdy Mostafa, an online instructor working on cloud, AI and IT certification learning materials. The site offers independent practice products, not official certification exams.
Our study journal discloses AI-assisted drafting, links provider facts to their sources and separates editorial study suggestions from official exam requirements. Have a question about an explanation or access? Contact us.
Source → scenario → independent check → publish.
- Map the item to the current public exam blueprint.
- Write an original scenario with enough context to test judgment.
- Verify the key claim against an official vendor page.
- Review every distractor so it is wrong for a specific reason.
- Recheck content when the blueprint or linked documentation changes.
This is our editorial review standard. Each exam page explains the current status of its bank and sources; a review policy is not a claim that all imported content has completed the same review.