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多项选择题Which two statements are true about IS - IS?()

A、Interfaces have a default metric of 1.

B、Level 1 is intra - area and level 2 is interarea.

C、Level 1 routing is between an end system (ES) and IS while Level 2 routing is between an IS and IS.

D、Hosts send ISHs while routers send ESHs.

E、IS - IS is an open standard.

F、Metrics depend on interface speed.

  • B,E
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