Hands-on AI/ML labs and realistic mock exams for every NVIDIA certification — from Generative AI LLMs to AI Infrastructure. Plus AWS, GCP, Azure, and more. Built by engineers who've earned them.
Written by engineers who hold every NVIDIA cert we cover. Question banks re-checked against the blueprint on Apr 19, 2026.
Rebuild the engine with --use_paged_kv_cache and re-run the bench. Goal: p99 < 150 ms & > 2,600 tok/s.
from preporato_labs import Lab lab = Lab("tune-trtllm-llama3") engine = build_engine(max_batch_size=64, use_paged_kv_cache=True) p50, p99, thr = bench(engine, qps=80, seconds=30)
lab.check(3)
“The labs are the only reason I passed NCA-GENL on my first try. Tuning TensorRT-LLM on a real GPU beat every lecture I’d watched.”
Andrew M. · ML Platform Engineer · NCA-GENL, Apr 2026
Questions, explanations, progress tracking, and real AI/ML labs — in one workspace.
Per-objective breakdown tells you — objectively — when to book the exam.
Mirror the real exam's format, difficulty, and blueprint coverage. Refreshed after every revision.
Which NVIDIA inference server supports in-flight batching for LLMs?
Plain-English explanations with official NVIDIA docs cited inline.
Flashcards for NCCL ops, TensorRT flags, CUDA streams — scheduled by the forgetting curve.
Our practice tests are designed to closely mirror the actual certification exams in terms of question format, difficulty level, and topic coverage. We regularly update our question banks based on the latest exam objectives and feedback from certified professionals.
Yes! Once you purchase a practice test, you have lifetime access to it. This includes all future updates and new questions we add to that exam. You can retake the tests as many times as you need.
Absolutely. Our dashboard provides comprehensive progress tracking including scores over time, performance by topic area, time spent studying, and comparison with other test-takers. You can easily identify weak areas and focus your study efforts.
Yes, every question comes with a detailed explanation of both the correct answer and why other options are incorrect. We also include references to official documentation and additional learning resources for deeper understanding.
We offer a 30-day money-back guarantee. If you're not satisfied with the quality of our practice tests, contact our support team within 30 days of purchase for a full refund, no questions asked.
Join thousands of IT professionals who passed their exams with our practice tests
No subscription required