According to this picture, what can we judge? (Multiple choice)

• A.The IS-IS interface type of the GE0/0/0 interface of R1 is Level-1-2
• B.IS-IS IPv6 is not enabled on GE0/0/1 of R1
• C.IS-IS IPv6 is enabled on GE0/0/0 of R1
• D.The IS-IS interface type of GE0/0/1 of R1 is Leve-1

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Network administrator A wants to check the neighbor status of BGP router R2. R2's BGP neighbor status information is shown in the figure. Please help network administrator A to obtain the following information: The AS where R2 is located is AS (). (Note: Only write numbers, do not add punctuation or spaces)

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When a fault occurs, the fault can be classified to reduce the scope of fault location. Which of the following is not an interface configuration fault?

• A.Inconsistent interface authentication
• B.The receiving and emitting power of both ends is inconsistent
• C.IP address conflict
• D.The duplex modes of the interfaces on both ends are inconsistent

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Which of the following will not cause the VRRP backup group to oscillate?

• A.The VRRP backup group preemption delay configuration on both ends is inconsistent
• B.Backup device interface packet loss
• C.The time interval of notification messages is too small
• D.The link that transmits VRRP notification packets flaps

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Network administrator A wants to use AS-Path Fiter to match routing entries with the BGP routing attribute AS_PATH [100 200 300]. Network administrator A sorts out the four configurations in the figure. Which of the following configurations can satisfy the network administrator A's requirement? (Multiple choice)

• A.Method B
• B.Method A
• C.Method D
• D.Method C

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