Which of the following overhead types does IS-IS support? (Multiple choice)

• A.wide
• B.Narrow-compatible
• C.Narrow
• D.compatible

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Which of the following description of the permanent multicast address is wrong?

• A.All hosts and routers in the network segment listen to 224.0.0.1
• B.All routers running the PIM protocol listen on 224.0.0.100
• C.All routers running OSPF protocol listen on 224.0.0.5
• D.All routers listen on 224.0.0.2

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What is the minimum total length of the address in IS-IS Byte?

• A.2
• B.20
• C.8
• D.16

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A local router runs IS-IS and its command output is shown in the following figure. Which of the following statements is true?

• A.The circuit level of S4/0/0 is Level-1.
• B.The cost of S4/0/0 is 20.
• C.S4/0/0 sends IIH packets at the interval of 30s.
• D.S4/0/0 supports IPv6.

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The default priority of the VRRP device in the backup group is:

• A.0
• B.100
• C.200
• D.150

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