What is the name of the feature that is used by Metro Ethernet service customers to ensure that traffic sent from its routers doesn't extend beyond the contracted rate?

A) Policing
B) Traffic Controller
C) Shaping
D) Buffer Engine

C
Explanation: C) Traditionally, Metro Ethernet service providers will prevent customers from sending traffic at a rate higher than the contracted rate by implementing a traffic policer. To prevent their traffic from being dropped, Metro Ethernet customers can implement a traffic shaper at the connection point to the service provider to shape their traffic to fit the contracted rate.