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CISA · Question #172

Which of the following technologies is BEST suited to fulfill a business requirement for nonrepudiation of business-to-business transactions with external parties without the need for a mutually trust

The correct answer is B. Blockchain distributed ledger. Blockchain provides a decentralized, immutable ledger that records transactions transparently across multiple parties. This enables nonrepudiation because once a transaction is recorded on the blockchain, it cannot be altered or denied by any party involved. Additionally, blockch

Submitted by yousef_jo· Apr 18, 2026Protection of Information Assets

Question

Which of the following technologies is BEST suited to fulfill a business requirement for nonrepudiation of business-to-business transactions with external parties without the need for a mutually trusted entry?

Options

  • APublic key infrastructure (PKI)
  • BBlockchain distributed ledger
  • CArtificial intelligence (AI)
  • DCentralized ledger technology

How the community answered

(66 responses)
  • A
    11% (7)
  • B
    59% (39)
  • C
    26% (17)
  • D
    5% (3)

Explanation

Blockchain provides a decentralized, immutable ledger that records transactions transparently across multiple parties. This enables nonrepudiation because once a transaction is recorded on the blockchain, it cannot be altered or denied by any party involved. Additionally, blockchain does not require a central trusted authority, as the consensus mechanism ensures trust and verification across all participants. While PKI is also effective for nonrepudiation, it typically involves a trusted certificate authority. Blockchain, on the other hand, eliminates the need for such an intermediary, making it ideal for scenarios where mutual trust is not required.

Topics

#Nonrepudiation#Blockchain#Distributed Ledger Technology#Transaction Security

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