The Network Interface: Output Queue Length counter shows how many packets are waiting to be processed by the NIC. When is the NIC the bottleneck?

A.
When the average value is consistently greater than 2.

B.
When the average value is consistently less than 1.

C.
When the average value is consistently less than 2.

D.
None.

Explanation:
When the average value is consistently greater than 2, you have a NIC that is acting as the bottleneck.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 342-344, 408.