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

A.
people

B.
interior barriers

C.
exterior barriers

D.
perimeter barriers

Explanation:
In terms of physical security, people are the last line of defense for your company’s assets. If an intruder gets
past the perimeter barriers, then the external barriers and finally the internal barriers, there are no more
physical defenses remaining other than people in the facility.
Incorrect Answers:
B: Interior barriers are behind external barriers and perimeter barriers in terms of physical security. However,
internal barriers are not the last line of defense; people are. Therefore, this answer is incorrect.
C: Exterior barriers are between perimeter barriers and internal barriers in terms of physical security. Therefore,
they are not the last line of defense so this answer is incorrect.
D: Perimeter barriers are the first line of defense; not the last line of defense. Therefore, this answer is
incorrect.