The correct description of configuring BGP4+ is that

• A.BGP4 configures the reflector, the role positioning of the reflector and the client needs to be consistent with the configuration of BGP4
• B.BGP4+ does not support route reflectors.
• C.BGP4+? Router-ID ? BGP4 ? Router-ID-??
• D.The next hop of a BGP4 route can use the Link-Local address.
• E.BGP4 specifies p

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

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

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The following statement about the Security Alliance SA in IPSec is wrong with ?

• A.IpSec peers must be at a two-way SA to establish an IPSec VPN connection to close
• B.Use the display ipsec command to view information such as the encryption method used with another IPSEC peer, the traffic of interest, and so on.
• C.IPSec only supports encrypting data using the pair encryption algorithm.
• D.SA is uniquely identified by a triple that includes the Security Parameter Inder ,Security Parameter Inder), the source IP address, and the Security Protocol Number (ASESP) used

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The Next Header field information exists only in the header of an IPv6 message and is used to indicate whether an extended header exists for IPv6

• A.False
• B.True

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The following statement about ISIS (IPv6) is correct?

• A.IS-IS works at the data link layer and only needs to add a new TLV to support IPv6
• B.To support the processing and computation of IPv6 routes, IS-IS has added NLPID to the 129TLV
• C.In order to support the processing and calculation of IPV6 routes, IS-IS has added TLV232, 236
• D.By default, IS-IS has the multi-topology feature turned on

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