Which of the following parameters can be defined for the threshold value?

A.
Binary value.

B.
Hourly.

C.
Daily.

D.
Weekly.

E.
Monthly.

Explanation:
You would use a binary value to define the threshold value. This is the point at which an action should be performed because a predetermined value has been surpassed.
Incorrect
Answers:
B, C, D, E: The polling interval is the time that specifies when a device is to be polled for management information. Therefore, you can set that a device be polled Hourly, Daily, Weekly, Monthly, or every few minutes and so forth.
References:

Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 445-446.