单选题What is a drawback to using the IntServ model？（）ARSVP that signals QoS requests per individual flowBnot scalable to large implementationsCadmission control not supportedDuse of dynamic port numbers EUDP not supported
单选题
What is a drawback to using the IntServ model？（）
A
RSVP that signals QoS requests per individual flow
B
not scalable to large implementations
C
admission control not supported
D
use of dynamic port numbers
E
UDP not supported
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