If four routers run ISIS and have established an adjacency relationship, and the area code and router rank are marked as shown in the figure, what is the cost value of R4 reaching
10022/32?

• A.30
• B.10
• C.40
• D.20

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BGP can only automatically aggregate routes whose source is Incomplete.

• A.False
• B.True

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Which of the following configurations is the correct OSPFv3 route aggregation configuration:

• A.[Huawei] interface gigabitethernet 1/0/0 [Huawei-GigabitEthernet1/0/0]asbr-surmary fcO0-0:0:48 cost 20
• B.[Huawei]ospfv3 1 [Huawei-ospfv3-1]abr-surmary fcO0:0:0:48 cost 400
• C.(Huaweijospf3 1 Huawei-ospfv3-1Jarea 1 Huawei-ospfv3-1-area-0001]asbr-sumary fcO0:0:0: 48 cost 20 tag 100
• D.[Huawei]ospfv3 1 [Huawei-ospfv3-1J]area 1 [Huawel-ospfv3-1-area-0001]abr-summary fc00:0-0:48 cost 400
• E.[Huawei]ospfv3 1 [Huawei-ospfv3-1]asbr-surmary fcO0-0:0::48 3 cost 20 tag 100

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Link state information is isolated by default between different IS-IS processes on the same router.

• A.TRUE
• B.FALSE

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The following statement about the NSSA area is correct (multiple choice).

• A.The NSSA zone must automatically generate a default LSA to access the external network
• B.The NSSA zone generates a Category VII LSA to advertise external routing, and the FA address in the Category VII LSA acts to prevent loops
• C.In the NSSA area where the OSPF neighbor sends hello packets, the N position 0, E within the option field Position 1
• D.In the OSPF neighbor in the NSSA region sends hello packets, position 1 within the option field, position E

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