what is the purpose of classification？

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The purpose of classification isQ......

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多项选择题

Which two of these steps are minimum requirements to configure OSPFv3 under IPv6？（）

A.Configure a routing process using the command ipv6 router ospf [process-id].
B.Add the network statement for the interfaces on which OSPF will run.
C.Configure OSPF on the interface that it will run on.
D.Use the passive-interface command on the interfaces on which OSPF should not run.
E.Enable routing.

单项选择题

Two BGP peers connected through a routed firewall are unable to establish a peering relationship. What could be the most likely cause？（）

A.BGP peers must be Layer 2-adjacent.
B.EBGP multihop is not configured.
C.The firewall is not configured to allow IP protocol 89.
D.The firewall is not configured to allow UDP 179.

单项选择题

A network is composed of several VRFs. It is required that VRF users VRF_A and VRF_B be able to route to and from VRF_C，which hosts shared services. However，traffic must not be allowed to flow between VRF_A and VRF_B. How can this be accomplished？（）

A.route redistribution
B.import and export using route descriptors
C.import and export using route targets
D.Cisco MPLS Traffic Engineering