单项选择题

An IS-IS router is adjacent to and passing traffic with a neighbor. You perform a show is interface detail command and notice that for some interfaces you have a circuit type of 3. Which IS-IS level（s） is enabled on these interfaces？（）

A.Level 1 only
B.Level 2 only
C.Level 1 and Level 2
D.Level 3 only

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单项选择题

Which of the following multicast mode does Auto-RP require？（）

A.Link-mode
B.Dense mode
C.Sparse mode
D.Sparse-dense mode

多项选择题

Which two are default preference values for both internal and external IS-IS Level 2 routes on a Juniper Networks router？（）

A.10
B.15
C.18
D.150
E.160
F.165

多项选择题

What are commands that can be used to configure MBGP for multicast？（）

A.Under the BGP group， configure family inet any
B.Use the set protocol MBGP command to enable MBGP
C.Under the BGP group， configure family inet multicast
D.Use the set rib-group command to copy the multicast routes into inet.1