Which of the following is a hardware-based security technology included in a computer?

A.
Symmetric key

B.
Asymmetric key

C.
Whole disk encryption

D.
Trusted platform module

Explanation:
Trusted Platform Module (TPM) is a hardware-based encryption solution that is embedded in the system’s motherboard and is enabled or disable in BIOS. It helps
with hash key generation and stores cryptographic keys, passwords, or certificates.
Incorrect Answers:
A, B: Symmetrical and Asymmetrical keys are used in hardware- or software-based cryptography.
C: Whole disk and device encryption encrypts the data on the device. This feature ensures that the data on the device cannot be accessed in a useable form
should the device be stolen. This encryption can be provided by a software or a hardware solution.

Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 418-419
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp 236,