Which of the following cryptographic system services ensures that information will not be (ISC)2 CISSP-ISSAP Exam disclosed to any unauthorized person on a local network?

The correct answer is D. Confidentiality. Confidentiality is the cryptographic service specifically designed to prevent unauthorized disclosure of information - it ensures that only intended recipients can read data, typically through encryption mechanisms like AES or RSA on a local network. Why the distractors are…

Security Architecture Modeling

Question

Options

AAuthentication
BNon-repudiation
CIntegrity
DConfidentiality

How the community answered

(64 responses)

A
9% (6)
B
2% (1)
C
3% (2)
D
86% (55)

Explanation

Confidentiality is the cryptographic service specifically designed to prevent unauthorized disclosure of information - it ensures that only intended recipients can read data, typically through encryption mechanisms like AES or RSA on a local network.

Why the distractors are wrong:

A. Authentication verifies who someone is (e.g., passwords, certificates), but does not prevent unauthorized parties from reading data once they have access.
B. Non-repudiation ensures a sender cannot deny having sent a message (via digital signatures), addressing accountability rather than secrecy.
C. Integrity ensures data has not been altered in transit (e.g., via hashing), but does not prevent unauthorized viewing of that data.

Memory tip: Use the CIA triad - Confidentiality, Integrity, Availability. Any question about preventing unauthorized disclosure or access maps directly to the C. If the question mentions "reading," "seeing," or "disclosure," think Confidentiality.

Topics

#Cryptographic Services#Confidentiality#Data Protection#Encryption

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