Practice the real exam until passing is a fact, not a hope.
Timed, proctored simulations of AWS, CCNA, Kubernetes and 50+ other certifications — with explanations on every question, percentile-ranked results, and a mastery heatmap that shows instructors who's ready.
The readiness gap
Watching videos isn't practicing. The exam knows the difference.
Students feel ready because they finished the course. Then the clock, the format, and the pressure show up — and certification fees don't refund.
Failing costs real money
Certification sittings run $150–$400, with retake waiting periods on top. A student who walks in unmeasured is gambling the fee — and their confidence — on a feeling.
Instructors fly blind
Attendance and quiz averages say nothing about exam-day readiness. Without per-topic evidence, the weak spots surface for the first time on the score report.
Authoring eats the calendar
Writing one good exam question — stem, plausible distractors, explanation — takes real time. A full practice bank per certification is weeks of instructor work.
Real Exam Conditions
Timed. Proctored. Adaptive. Like the day that counts.
Full-length simulations with a countdown clock, a question navigator, flagging, and anti-cheat that notices tab switches, fullscreen exits, and suspiciously fast answers. When students sit the real exam, nothing about the pressure is new.
- Timed, full-length exam simulations
- Tab-switch, fullscreen, and copy/paste detection
- Auto-submit after repeated violations
Results That Teach
A score, a percentile, a certificate — and a study plan
Every attempt returns the score against the whole cohort ("you scored higher than 87% of test takers"), a completion certificate when they pass, per-question review with written explanations, and AI study recommendations aimed at the exact topics they missed.
- Percentile ranking against every attempt
- Explanations on every question, right or wrong
- Downloadable completion certificates
Cohort Mastery
See exactly who is ready — and who is about to fail
The mastery heatmap crosses every student with every subject: green where they're ready, red where they're not. Instructors stop guessing from attendance and start intervening on evidence, weeks before exam day.
- Student × category heatmap with accuracy per cell
- Cohort filters for each class or track
- Per-student report cards with violations and pace
Question Bank
A 500-question bank you curate — not retype
AI generates exam-style questions with distractors and explanations from your notes or documents; the scraper queues found questions for human review; and every question carries difficulty, section, and type. Authoring hours become review minutes.
- AI question generation with explanations built in
- MCQ, coding, and image question types
- Review queue keeps humans in control
Assignments
Catalog, cohorts, and due dates that run themselves
Assign exams to cohorts with due dates and students see exactly what's expected the moment they log in — assigned work first, then a 50-exam catalog across cloud, networking, security, and DevOps to practice beyond it.
- "Assigned to You" with cohort and due-date badges
- 50+ ready certification exams (AWS, CCNA, K8s, CEH…)
- Search and category filters across the catalog
Operations
The business side runs on the same screen
Enrollment, revenue, subscriptions, offline payments pending review, and every recent attempt — one admin view. Training programs run on it as a business, not a spreadsheet with a login page.
- Live attempt feed with pass/fail at a glance
- Revenue, subscriptions, and offline payment review
- Platform insights: completion and publish rates
The math
One failed sitting costs more than a year of practice.
Exam fees are $150–$400 a sitting. Add the retake wait, the second round of study leave, and a cohort's worth of instructor hours spent writing practice questions by hand.
Unmeasured prep
$150–400/retake
per student who walks in unready — plus weeks of instructor time hand- writing the practice material that might have prevented it.
- · Readiness: a feeling, tested on exam day
- · Weak spots: discovered on the score report
- · Question banks: weeks of authoring per cert
Nexa ExamSim
Measured
Every student's readiness is a number per topic, weeks before the fee is on the line — and the question bank generates and refreshes itself.
- · Readiness: percentile-ranked, per topic
- · Weak spots: on the heatmap, in time to fix
- · Question banks: AI-generated, human-reviewed
Bring your syllabus — watch it become a timed exam on the call.
Questions training teams ask before the demo
Can we use our own exam content?
Yes — author questions directly, generate them with AI from your own notes and documents, or import in bulk. Everything lands in the same bank with difficulty, sections, and explanations.
How does the anti-cheat work?
The exam runs fullscreen and records tab switches, fullscreen exits, copy/paste attempts, and suspiciously fast answers. Violations appear on the student's report card, and repeated violations auto-submit the attempt.
What do instructors see?
Cohort-level mastery heatmaps, per-student report cards with every attempt and violation, an exam-by-exam view of the funnel, and revenue/operations dashboards if you sell seats.
Does it handle payments?
Subscriptions with trials, card payments, and offline payments (bank transfer, cash, check) with an admin review queue — plus order history and invoices for every student.
Exam day should be a formality.
Make readiness measurable.
Your next cohort can practice under real conditions from week one — and you'll know who's ready before the fees are booked.
Prefer email first?