单项选择题
What is the encapsulation format of an MPLS Multicast VPN (MVPN) packer?()
A.IP unicast in IP unicast B.IP multicast in IP anycast C.IP anycast in IP anycast D.IP multicast in IP unicast E.IP multicast in IP multicast F.IP unicast in IP multicast
多项选择题 ForSONETringswitching,the50msswitchtime:Selectallthatapply?()
单项选择题 InMPLStrafficengineering,whichoneofthefollowingprotocolsisusedforPathSetup?()
单项选择题 WhatdoesFRTPstandfor?()