A、当链路层协议是Ethernet时,OSPF缺省认为网络类型是Broadcast B、当链路层协议是帧中继、X.25或ATM时,OSPF缺 C、没有一种链路层协议会被缺省的认为是Point-to-Multipoint类型。如果NBMA类型的网络不是全连通的,需要将网络类型手工改为Point-to-Multipoint D、当链路层协议是PPP时,OSPF缺省认为网络类型是Point-to-Point
A、point-to-point,point-to-multipoint B、broadcast,point-to-multipoint C、point-to-multipoint,broadcast D、point-to-point,broadcast
A、Point-to-point B、Nonbroadcast(NBMA) C、Point-to-multipoint D、Point-to-multipoint nonbroadcast