Which of the following allows lower level domains to access resources in a separate Public Key Infrastructure?

A.
Trust Model

B.
Recovery Agent

C.
Public Key

D.
Private Key

Explanation:
In a bridge trust model allows lower level domains to access resources in a separate PKI through the root CA.
A trust Model is collection of rules that informs application on how to decide the legitimacy of a Digital
Certificate.
In a bridge trust model, a peer-to-peer relationship exists among the root CAs. The root CAs can communicate
with one another, allowing cross certification. This arrangement allows a certification process to be established
between organizations or departments.
Each intermediate CA trusts only the CAs above and below it, but the CA structure can be expanded without
creating additional layers of CAs.