A. a traffic engineered path
B. another name for a Frame Relay PVC
C. a bidirectional path through a network
D. a unidirectional path through a network
参考答案:D
A. a traffic engineered path
B. another name for a Frame Relay PVC
C. a bidirectional path through a network
D. a unidirectional path through a network
参考答案:D