Which is the last line of defense in a physical security sense? 

Answer options:

A. people
B. interior barriers
C. exterior barriers
D. perimeter barriers

A

"Ultimately, people are the last line of defense for your companys assets" (Pastore & Dulaney, 2006, p. 529). Pastore, M. and Dulaney,
E. (2006). CompTIA Security+ study guide: Exam SY0-101. Indianapolis, IN: Sybex.