Which statements about BGP route reflection are true? (Multiple Choice)

• A.After learning routes from an IBGP peer, an RR advertises these routes to all clients and non-clients.
• B.After learning routes from a client, an RR advertises these routes to all other clients and non-clients.
• C.IBGP peers must be fully connected in the absence of a route reflector (RR). The BGP route reflection mechanism is introduced to lower the requirement.
• D.After learning routes from a non-client, a route reflector (RR) advertises these routes to all clients.

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If the default route is not used in the local IP routing table, the default route-import command is used to advertise the default route to the BGP peer (group).

• A.False
• B.True

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The IPSG can be configured with a static binding table or used with DHCP-snooping to form a binding table.

• A.False
• B.True

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Which of the following description of the 8021s deployment features is correct?

• A.Each VLAN shares a spanning tree instance
• B.Multiple VLANs share a spanning tree instance
• C.Multiple bridges share a spanning tree instance
• D.All VLANs share a spanning tree instance

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Which of the following statement about IPSec VPN is true? (Multiple choice)

• A.two routers establish IPSec VPN through aggressive mode, then a minimum of interaction 4 packets between the two devices build tunnel
• B.Between two routers, an OSPF neighbor relationship can be established through an IPSec VPN tunnel, and intranet routes can be exchanged.
• C.Two routers establish an IPSec VPN through the master mode. Starting from the fifth packet (inclusive), the payload data is often encrypted.
• D.Savage mode can support NAT traversal, while main mode does not support NAT traversal

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