ZeroDay Labs offers a CISSP practice engine that mirrors the official Computerized Adaptive Testing format used by (ISC)². 100–150 items per full session, adaptive difficulty, full domain weighting, and per-question explanations.
ZeroDay Labs — cybersecurity certification training. Adaptive practice exams for CompTIA Security+ (SY0-701) and (ISC)² CISSP. Free plan, no credit card required.