The Int-Serv model provides users with end-to-end absolute QoS guarantees, but the reason for the lack of successful large-scale commercial use is.

The Int-Serv model provides users with end-to-end absolute QoS guarantees, but the reason for the lack of successful large-scale commercial use is.
A . Limited bandwidth reservation
B . Low forwarding efficiency
C . Poor scalability
D . Not conducive to traffic regulation

View Answer

Answer: C