生成树协议(Spanning Tree Protocol)的主要作用是什么?( )

G is a tree, then G's spanning tree has ( ) tree. A: 1 B: 0 C: 2 D: I'm not sure

Which two values are used by Spanning Tree Protocol to elect a root bridge? (Choose two.)

Catalyst 3500(Cisco IOS系统)中配置UplinkFast生成树可选功能的命令格式是——。 A: set spantree uplinkfast enable B: set spantree uplinkfast enable rate C: spanning—tree vlanroot primary D: spanning—tree uplinkfast·

Under which two circumstances should Spanning Tree Protocol be implemented？ （） A:  to ensure a loop-free topology B:  to protect against user-side loops C:  when a VLAN spans access layer switches D:  for the most deterministic and highly available network topology E:  because of the risk of lost connectivity without Spanning Tree Protocol

【CH04】下面哪个用来分隔广播域？ A: 生成树（Spanning Tree ，STP) B: IEEE802.1D C: 虚拟局域网（Virtual LAN） D: 上述答案都不对

将交换机的端口生成树成本设置为30,使用以下哪个命令 A: uijie(config) B: spanning-tree cost 30 C: uijie(config-if-fastethernet0/1) D: spanning-tree cost 30 E: uijie(config) F: spanning-tree priority 30 G: uijie(config-if-fastethernet0/1) H: spanning-tree path-cost 30

锐捷交换机缺省是关闭spanning-tree的，如果网络在物理上存在环路，则必须手工开启spanning-tree。（

__________ in Athens was considered sacred. A: Pine tree B: Olive tree C: Willow tree D: Cypress tree

启用生成树协议在 模式下执行命令spanning-tree enable