ITPEC FE Morning April 2022 Question 42
ITPEC FE Morning April 2022 — Question 42 of 80
ISO/IEC 27000 Security Properties — match definitions to authenticity and reliability.
Four properties defined in ISO/IEC 27000:
- •I — Reliability: consistent intended behavior and results
- •II — Authenticity: an entity is what it claims to be
- •III — Availability: accessible and usable on demand by authorized entity
- •IV — Confidentiality: information not disclosed to unauthorized individuals
Answer: (b) — Authenticity = II, Reliability = I
Why not others:
- (a) Authenticity = I, Reliability = III — swaps reliability with availability
- (c) Authenticity = II, Reliability = IV — assigns confidentiality as reliability
- (d) Authenticity = IV, Reliability = I — assigns confidentiality as authenticity
Key rule: Authenticity = "you are who you claim to be"; Reliability = "consistent expected behavior." Don't confuse Availability (III) or Confidentiality (IV) with these.
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