Which of the following elements is NOT included in a Public Key Infrastructure (PKI)?

A.
Timestamping

B.
Repository

C.
Certificate revocation

D.
Internet Key Exchange (IKE)

Explanation:
Internet Key Exchange (IKE) is not included in a Public Key Infrastructure (PKI). IKE is a key management
protocol used in IPSec.
A PKI may be made up of the following entities and functions:
Certification authority
Registration authority
Certificate repository
Certificate revocation system
Key backup and recovery system
Automatic key update
Management of key histories
Timestamping
Client-side software
Incorrect Answers:
A: Timestamping is included in a Public Key Infrastructure (PKI).
B: Repository (certificate repository) is included in a Public Key Infrastructure (PKI).
C: Certificate revocation is included in a Public Key Infrastructure (PKI).

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, p. 839