CCSP · Question #10
What does nonrepudiation mean?
The correct answer is D. Preventing any party that participates in a transaction from claiming that it did not. Nonrepudiation is a security principle that ensures a party cannot deny having performed an action or transaction, providing proof of origin or delivery.
Question
What does nonrepudiation mean?
Options
- AProhibiting certain parties from a private conversation
- BEnsuring that a transaction is completed before saving the results
- CEnsuring that someone cannot turn off auditing capabilities while performing a function
- DPreventing any party that participates in a transaction from claiming that it did not
How the community answered
(46 responses)- A4% (2)
- B2% (1)
- D93% (43)
Why each option
Nonrepudiation is a security principle that ensures a party cannot deny having performed an action or transaction, providing proof of origin or delivery.
Prohibiting certain parties from a private conversation relates to confidentiality and access control, not nonrepudiation.
Ensuring a transaction is completed before saving results relates to transactional integrity and atomicity, not specifically nonrepudiation.
Preventing someone from turning off auditing capabilities relates to audit control and integrity, which contributes to accountability, but nonrepudiation focuses on undeniable proof of action.
Nonrepudiation provides irrefutable proof of the origin and integrity of data or actions, ensuring that a sender cannot falsely deny having sent a message and a recipient cannot falsely deny having received a message. This is often achieved through digital signatures and robust logging.
Concept tested: Nonrepudiation principle
Source: https://learn.microsoft.com/en-us/azure/architecture/security/security-pillar#security-principles
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