单项选择题
On what is the Martini control plane based?（）
A. IGP B. LDP C. BGP D. RSVP
多项选择题 Which two statements are correct regarding IS-IS?（）
多项选择题 Which two forwarding classes have bandwidth assigned when CoS is not explicitly configured inJUNOS software?（）
多项选择题 What are two reasons for using a virtual link in OSPF?（）
