If Organization A trusts Organization B and Organization B trusts Organization C, then Organization A trusts Organization C. Which of the following PKI concepts is
this describing?
A.
Transitive trust
B.
Public key trust
C.
Certificate authority trust
D.
Domain level trust
Explanation:
In transitive trusts, trust between a first party and a third party flows through a second party that is trusted by both the first party and the third party.
Incorrect Answers:
B: Public keys are part of Public Key Infrastructure (PKI) and are used together with private keys in an asymmetrical cryptography system.
C: A Certificate Authority (CA) is responsible for issuing, managing and maintaining certificates in a Public Key Infrastructure (PKI). The certificates are used as a
means of authentication. This, however, is not a trust model.
D: Domains exist within a single organization and represent the trust of entities within the domain. This trust is not extended to third parties.Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 251- 252, 332-333
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