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多项选择题Which three characteristics apply to IS - IS but not to OSPF?()

A、uses a default IOS metric of 10 on each interface

B、uses an on - demand circuit to reduce the hello and LSA flooding across switched WAN li nks,such as ISDN

C、uses a DIS and a backup DIS to present the psuedo - node on the LAN

D、encapsulates PDUs directly into a data - link frame

E、uses stubby areas to improve network scalability

F、runs PRC (Partial Route Calculations) to calculate IP re achability information

  • A,D,F
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