CompTIA Security+ Question D-28

In order to use a two-way trust model the security administrator MUST implement which of the following?

A. DAC
B. PKI
C. HTTPS
D. TPM

Answer: B

Explanation:
PKI is a high level concept. Within a PKI you use a trust model to set up trust between Certification Authorities (CAs). A public key infrastructure (PKI) is a set of hardware, software, people, policies, and procedures needed to create, manage, distribute, use, store, and revoke digital certificates.