Which of the following is BEST defined as a physical control?

Which of the following is BEST defined as a physical control?
A .  Monitoring of system activity
B .  Fencing
C .  Identification and authentication methods
D .  Logical access control mechanisms

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Answer: B

Explanation: Physical controls are items put into place to protect facility, personnel, and resources. Examples of physical controls are security guards, locks, fencing, and lighting.

The following answers are incorrect answers: Monitoring of system activity is considered to be administrative control. Identification and authentication methods are considered to be a technical control. Logical access control mechanisms is also considered to be a technical control.

Reference(s) used for this question:

Harris, Shon (2012-10-25). CISSP All-in-One Exam Guide, 6th Edition (Kindle Locations 12801282). McGraw-Hill. Kindle Edition.