ISP Study Guide 2026
Everything you need to pass the ISP exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
ISP exam key facts
- The open-book ISP exam has a total of 110 questions. Source
- Candidates have 150 minutes to complete the 110-question ISP exam. Source
- The ISP exam test fee is $275 for NCMS members and $400 for non-members, paid with the application. Source
- After failing the ISP exam, candidates may retest after a 30-day waiting period, with a maximum of four attempts within a 12-month period. Source
- The ISP certification must be recertified every three years. Source
📋 ISP Exam Format at a Glance
📚 ISP Topics to Study (44)
✍️ Sample ISP Questions & Answers
1. In an industrial security context, 'data at rest' refers to:
Data at rest encompasses all stored information that is not actively moving through a network or being processed.
2. What is a 'counterfeit part' in the context of supply chain security?
A counterfeit part is misrepresented as genuine or authorized, posing safety and security risks especially in critical industrial systems.
3. How do physical barriers contribute to facility protection?
Physical barriers, such as fences, walls, gates, and reinforced doors, create tangible obstacles to entry. They are specifically designed to delay, deter, or prevent unauthorized individuals from gaining access to a facility or specific secure zones within it. These barriers form a crucial first line of defense in a layered security strategy.
4. During a declared emergency at an industrial facility, mutual aid agreements with neighboring facilities and local agencies are MOST valuable because they:
Mutual aid agreements pre-authorize resource sharing—personnel, equipment, supplies—ensuring help is available quickly when the facility's own capacity is overwhelmed.
5. A contractor wants to submit clearance requests for new hires 'just in case' a future contract requires access. Is this allowed?
Contractors may request PCLs only for employees with a current, legitimate need to access classified information.
6. A contractor holding foreign government information (FGI) receives a request to share it with a third country. What is required?
FGI may not be released to a third country or third party without the prior consent of the originating government.
🎯 Free ISP Practice Tests
📖 ISP Guides & Articles
What Practice Test Geeks adds beyond an AI chat for ISP
An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length ISP mock exam — 150 questions in 180 minutes with a 75% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
- A fixed ISP question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
- Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
- A printable ISP cheat sheet you can print or save as a PDF.
- ISP flashcards built from the same question bank.
- Free ISP practice tests with the correct answer shown after each question.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- ncms-isp.org — Renewal, score validity, retake policy, test delivery, eligibility, fees, exam format, registration deadline, retake fee, test dates · verified Oct 2026