Alcatel-Lucent NRS II – IP/MPLS Services — Question 10

Which of the following statements about CIR of a queue is TRUE?

Answer options

• A. It may exceed PIR of the queue.
• B. It may be exceeded by the average servicing rate of the queue.
• C. It varies depending on the traffic characteristics.
• D. It is the rate at which packets are forwarded out of the queue.

Correct answer: D

Explanation

The correct answer, D, is accurate because the Committed Information Rate (CIR) is indeed defined as the rate at which packets are forwarded out of the queue. Options A and B are incorrect because CIR cannot exceed PIR, nor can it be surpassed by the servicing rate. Option C is misleading as CIR is generally a fixed value regardless of traffic characteristics.