Which of the following description is wrong about the VPNv4 address?

• A.By default, the PE does not perform vpn-target filtering on the received VPNv4 routes.
• B.Before the local PE advertises the VPNv4 route learned from the site directly connected to itself to other PEs, it sets the Target attribute for these routes and advertises it as a BGP extended community attribute along with the route.
• C.When BGP advertises reachable and unreachable VPNv4 routes, it carries the RD attribute.
• D.The VPNv4 address has a total of 12 bytes, including an 8-word route identifier RD (Route Distinguisher) and a 4-byte IPv4 address prefix.

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Which of the following advanced features does BGP EVPN support?

• A.VRRP over VXLAN
• B.Multi-live gateway
• C.VXLAN Qos
• D.ARP broadcast suppression

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BGP can only automatically aggregate routes originating from Incomplete.

• A.True
• B.False

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In the intranet MPLS BGP VPNF network, when a packet enters the public network for forwarding, it will be encapsulated with two layers of MPLS labels. The following description of the two-layer label, which is wrong?

• A.The egress PE uses the inner label when determining which egress CE the message should be sent to.
• B.The private network label is carried and distributed when the route is delivered by MP-BGP. The public network label is distributed by the LDP protocol.
• C.MPLS BGP VPN uses two layers of labels: public network labels (also known as outer labels) and private network labels (also known as inner labels).
• D.By default, the router assigns the same label value to all VPNv4 routes destined for the peer PE.

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The OSPFv3 protocol is a separately developed protocol. It differs from OSPFv2 in that OSPFv3 is based on links rather than network segments. Which of the following statement is wrong?

• A.All OSPFv3 interfaces use the Link-local address as the destination address of the packet except the virtual link.
• B.The routing information obtained by the OSPFv3 router from the neighbor uses the link-local address of the neighbor as the next hop of the forwarded packet.
• C.The two routers connected to the link can establish neighbor relationships even if their IPv6 address prefixes are different.
• D.The two routers connected to the link can establish neighbor relationships even if no unicast IPv6 address is configured.

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