easyMultiple ChoiceObjective-mapped
ISC2 CC Practice Question: Which concept ensures that a user cannot deny…
Which concept ensures that a user cannot deny having performed a specific action?
⚠ Common exam trap
ISC2 often tests the confusion between non-repudiation and integrity, where candidates mistakenly think that ensuring data hasn't changed (integrity) also proves who changed it, but non-repudiation specifically requires a binding identity proof like a digital signature.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Non-repudiation
Non-repudiation ensures that a user cannot deny having performed a specific action, typically by using cryptographic mechanisms such as digital signatures or audit logs. In the context of the CC exam, this is most commonly achieved through public key infrastructure (PKI) where a private key signs an action, and the corresponding public key verifies the signature, providing irrefutable proof of origin. This prevents a user from later claiming they did not send a message or perform a transaction.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Non-repudiation
Why this is correct
Non-repudiation provides irrefutable evidence of an action, preventing denial.
- ✗
Availability
Why it's wrong here
Availability ensures systems are operational, not proof of actions.
- ✗
Integrity
Why it's wrong here
Integrity ensures data is unaltered, not proof of actions.
- ✗
Authorization
Why it's wrong here
Authorization grants permissions, but does not prevent denial of actions.
Go deeper
Related to this question
Learn chapter
Network Security Foundations
Key term
Audit
An audit is a systematic, independent review of IT systems, processes, and controls to verify compliance with policies, standards, and regulations.
Key term
Public Key Infrastructure
Public Key Infrastructure is a system of policies, roles, hardware, and software that manages digital certificates and public-key encryption to secure communications and verify identities online.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CC exam.