Which of the following is the structure designed to verify and authenticate the identity of individuals within the
enterprise taking part in a data exchange?

A.
PKI

B.
single sign on

C.
biometrics

D.
SOA

Explanation:
A public key infrastructure (PKI) is a set of roles, policies, and procedures needed to create, manage, distribute,
use, store, and revoke digital certificates[1] and manage public-key encryption. The purpose of a PKI is to
facilitate the secure electronic transfer of information for a range of network activities such as e-commerce,
internet banking and confidential email.
https://en.wikipedia.org/wiki/Public_key_infrastructure