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單項(xiàng)選擇題

Which command is used to display the collection of OSPF link states?（）

A. show ip ospf lsa database
B. show ip ospf link-state
C. show ip ospf neighbors
D. show ip ospf database

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單項(xiàng)選擇題

When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?（）

A. show ip access-list
B. show access-list
C. list ip interface
D. show interface
E. show ip interface

單項(xiàng)選擇題

Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?（）

A. the switch with the lowest MAC address
B. the switch with the higest MAC address
C. the switch witch the higest IP address
D. the switch with the lowest IP address