CISSP
Certified Information Systems Security Professional
An advanced credential covering security architecture, engineering, and management across eight domains. The most recognized cert for senior infosec roles worldwide.
- Exam length
- 180 min
- Pass score
- 700/1000 (scaled)
- Questions
- 100–150 (adaptive)
- Domains
- 8
Suggested prep: 8–16 weeks · Difficulty: Expert
Domain breakdown
Official weights from the (ISC)² exam outline. We track your mastery on each domain individually so you know where to focus.
Try a real CISSP question
Pulled straight from the free tier. Every question in the bank cites a public source you can verify.
A digitally signed audit log lets an organization prove that a specific user performed a transaction, and the user cannot credibly deny having done so. Which security concept does this primarily provide?
- AIntegrity
- BAccountability
- CNon-repudiation
- DAuthentication
Show answer and explanation
Correct answer
Non-repudiation
Non-repudiation assures that the originator of an action cannot later deny having performed it, which a verifiable digital signature on the audit log provides. Authentication only confirms who a user is at the time of access, integrity only shows that the log itself was not altered, and accountability is the broader goal of tracing actions to a person; none of those alone delivers the undeniable proof of a specific action that a digital signature does.
CISSP FAQ
How many questions are on the CISSP exam?
The (ISC)² CISSP exam has 100–150 (adaptive) questions and runs 180 minutes. A passing score is 700/1000 (scaled).
What domains does CISSP cover?
8 domains, per the official (ISC)² outline: Security and Risk Management (16%), Asset Security (10%), Security Architecture and Engineering (13%), Communication and Network Security (13%), Identity and Access Management (IAM) (13%), Security Assessment and Testing (12%), Security Operations (13%), Software Development Security (10%).
How long should I study for CISSP?
Typical prep time is 8–16 weeks, depending on your experience. TierOne's spaced-repetition queue is built for short daily sessions, so progress compounds even on a busy schedule.
Can I try CISSP practice questions for free?
Yes. The free tier includes 50 real CISSP practice questions with cited sources, the Question of the Day, and the AI tutor (5 explanations per day). No credit card required.
Is there a pass guarantee?
Yes. If you fail your CISSP exam after 30 or more days on Pro, send us your score report and choose 3 free months or a full refund.
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