A、NBMA不能广播,而point-to-multipoint可以 B、NBMA可以提供多点访问,而point-to-multipoint不可以 C、NBMA是基于帧中继协议的,而point-to-multipoint只用在PPP协议 D、NBMA要求网络是full-meshed,而point-to-multipoint不要求
A、增加链路带宽 B、实现链路负载分担 C、实现链路保护和备份 D、ML-PPP可以支持以太网和TDM业务,但不支持ATM业务
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、A generic Hello B、Point - to - point Level 1, point - to -point Level 2, LAN Level 1, LAN Level 2 C、Point - to - point Level 1, point - to - point Level 2, LAN D、Point - to - point, LAN Level 1, LAN Level 2
A、point-to-point,point-to-multipoint B、broadcast,point-to-multipoint C、point-to-multipoint,broadcast D、point-to-point,broadcast
A、A.Point p = new Point(); B、B.Line.Point p = new Line.Point(); C、C.The Point class cannot be instatiated at line 15. D、D.Line l = new Line() ; l.Point p = new l.Point();