A security administrator is responsible for ensuring that there are no unauthorized devices utilizing
the corporate network. During a routine scan, the security administrator discovers an unauthorized
device belonging to a user in the marketing department. The user is using an android phone in
order to browse websites. Which of the following device attributes was used to determine that the
device was unauthorized?

A.
An IMEI address

B.
A phone number

C.
A MAC address

D.
An asset ID