You can use SNMP to collect important management information from servers and network devices. Which of the following concepts is used to determine when action should be taken?

A.
Threshold value

B.
Polling interval

C.
Internal polling

D.
External polling

Explanation:
Threshold value refers to the point when action should be taken because a value has dropped below a predetermined level.
Incorrect Answers:
B: The polling interval is the concept used to refer to when SNMP polls servers and network devices for important management information C: Internal polling is a type of polling that takes place internal to the network device being polled. An agent that is part of device is used.
D: External polling refers to a type of polling where a device is polled externally from another server or from an administrator’s computer.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 445-446.