多项选择题
A. It confines network instability to a single area of network.
B. It increases the routing overhead of the network
C. It supports VLSM
D. It routes between Autonomous Systems.
E. It allows extensive control of routing updates
F. None of the above
单项选择题 If the bandwidth of an OSPF interface is 64, what would be the calculated cost of the link?（）
多项选择题 What are the different characteristics of distance vector and link state routing protocols?（）
单项选择题 Under which network type circumstance would an OSPF router establish router adjacencies while not performing the DR/BDR election process?（）