多项选择题
A.PPP
B.FDDI
C.Frame Relay PVC
D.NBMA
E.Frame Relay SVC
多项选择题 Which three statements accurately describe layer 2 Ethernet switches?（）
多项选择题 Which two commands can be used to verify a trunk link configurationt status on a given cisco switch?（）
多项选择题 Which commands are required to properly configure a router to properly configure a router to run OSPF and to add network 192.168.16.0/24 to OSPF area 0?（）