A.The tunnel that is not configured with the policy-class command acts as the default
B.EXP selection is between multiple tunnels to the same destination
C.There is no requirement for IGP extensions
D.Tunnels are configured using the policy-class command and carry multiple EXP values
E.It supports VRF traffic， IP-to-MPLS switching， and MPLS-to-MPLS switching
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A.VPI 16
B.DLCI
C.VPI and VCI
D.circuit number
E.PVC and SVC
A.never takes place
B.periodically
C.during switchover
D.after switchover
E.before switchover
A.It prevents message looping， Session Advertisement （SA）messages must be RPF checked
B.RPF check should be done against the route to the source S of the corresponding PIM-SM domain
C.RPF check should be done against the route to the Rendez-vous Point of the corresponding PIM-SM domain，which originated the SA
D.RPF checking Session Advertisement （SA） messages will cause message looping
A.The VPNv6 address is a 96-bit route distinguisher and a 128-brt IPv6 address
B.The VPNv6 address is a 64-bit route distinguisher and a 128-bit IPv6 address
C.The VPNv6 address is a 64-brt route distinguisher and a 96-brt IPv6 address
D.The VPMv6 address is a 96-brt route distinguisher and a 96-bit IPv6 address
E.The VPNv6 address is a 128-bit route distinguisher and a 128-brt IPv6 address
A.NAP and NSP provide secure access to corporate gateways without managing end-to-end PVCs.NAP and NSP use Layer 3 routing，Layer 2 Forwarding，or Layer 2 Tunneling Protocol tunnels.Hence，they can scale their business models for selling wholesale service
B.The NSP can oversubscribe by deploying idle and session timeouts using an industry standard RADIUS server for each subscriber
C.Only a single session per CPE on one virtual channel （VC).The username and password are configured on the CPE， so all users behind the CPE for that particular VC can access only one set ofservices. Users cannot select different sets of services， although using multiple VCs and establishing different PPP session on different VCs is possible
D.If a single IP address is provided to the CPE， and NAT or PAT is implemented，certain applications such as IPTV，which embed IP information in the payload， well not work. Additionally，if an IP subnet feature is used，an IP address also has to be reserved for the CPE
E.PPPoA can use the features on the Cisco Service Selection Gateway （SSG）
最新試題
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