Which of the following are the advantages of VLAN aggregation?

• A.Reduce the waste of IP addresses
• B.Increase the amount of available VLANs
• C.Implement the isolation of broadcast domains between Sub-VLANs
• D.Increase the flexibility of addressing

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As shown in the figure, which of the following options can satisfy two routers to establish an ISIS neighbor relationship?

• A.ISIS with two routersProcess IDs must be the same.
• B.One of the two routers can be a Level-1-2 type, and the other can be a Leve1-1 type.
• C.Both routers are Level-1type.
• D.Both routers remain the default type.

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Which of the following descriptions about BGP load sharing is wrong?

• A.IBGP routes and EBGP routes to the same destination on the public network can form load balancing.
• B.If the destination network segment is the same, load balancing can be formed between BGP routes from different sources.
• C.If BGP load balancing is implemented, pee needs to be configured when the local device advertises routes to the IBGP peer grouprnext-hop-local command only Change the next hop address to own address.
• D.ASs that form load-balancing equal-cost routes. The -Path property must be different.

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Assuming that the neighbor relationship between BGP routers has been established successfully, the configuration on R1 is as shown in the figure. Which router is the route entry 10.10.10.0/24 advertised by R1 delivered to the farthest?

• A.R4
• B.R3
• C.R2
• D.R1

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The RSTP protocol provides a variety of protection functions. For example, when the edge port is configured in the protection state, the processing method after the edge port receives the BPDU message is:

• A.Directly discard the BPDUs
• B.Close the port
• C.Obtain relevant information after parsing the BPD service
• D.Forward BPDUs as required

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