单项选择题
A.show ip ospf lsa database
B.show ip ospf link-state
C.show ip ospf neighbors
D.show ip ospf database
多项选择题 What two things will a router do when running a distance vector routing protocol? （）
单项选择题 Which command displays CPU utilization?（）
单项选择题 On corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?（）