单项选择题
A.All TCP traffic is marked discard eligible.
B.All UDP traffic is marked discard eligible and a BECN is sent.
C.All TCP traffic is marked discard eligible and a BECN is sent.
D.All traffic exceeding the CIR is marked discard eligible.
多项选择题 It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit.Which of the following processes are required to accomplish this task?（）
单项选择题 which command allows you to verify the encapsulation type (CISCO OR IETF) for a frame relay link?（）
多项选择题 What two statistics appear in show frame-relay map output?（）