多项选择题
A.Layer 2 access link QoS design B.enterprise-to-service-provider mapping models C.Layer 3 link access QoS design D.service provider service level agreements E.Layer 2 link access load balancing
WhichdescriptionofBGPauthenticationistrue？（）A.MD5 has b...
单项选择题Which description of BGP authentication is true？（）
A.MD5 has been used by BGP to encrypt BGP update packets. B.BGP uses a message-digest algorithm to authenticate BGP peers C.A plain-text password authentication is an option of BGP authentication D.EBGP peers authentication is faster than IBGP peers authentication E.BGP uses public key and private key to authenticate BGP peers.
WhatisthetypicalmarkedDSCPvalueforavoicesignalingpacket...
单项选择题What is the typical marked DSCP value for a voice signaling packet in VoIP technology？（）
A.BE B.AF41 C.AF21 D.EF E.AF31
Whichthreestatementsabouttheroutetarget（RT）aretrue？（）A....
多项选择题Which three statements about the route target （RT） are true？ （）
A.The RT is a BGP extended community. B.The RT is an 8-byte field that is prefixed to an IPv4 address to make it a unique VPNv4 address. C.When a VPN route that is learned from a CE router is injected into BGP， one or more RTs are associated with it D.The distribution of VPN routing information is controlled through the use of VPN RTs E.When a VPN route that is learned from a CE router is injected into BGP， there is always one RT that is associated with it.
