多项选择题
Based on the show spanning-tree vlan 200 output shown in the exhibit，
which two statements about the STP process for VLAN 200 are true？ （）
A.BPDUs will be sent out every two seconds.
B.The time spent in the listening state will be 30 seconds.
C.The time spent in the learning state will be 15 seconds.
D.The maximum length of time that the BPDU information will be saved is 30 seconds.
E.This switch is the root bridge for VLAN 200.
F.BPDUs will be sent out every 10 seconds.
相关考题
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单项选择题
Whichrouterredundancyprotocolcannotbeconfiguredforinterfacetracking？（）
A.HSRP
B.GLBP
C.VRRP
D.SLB
E.RPR
F.RPR+ -
多项选择题
WhichthreestatementsaboutSTPtimersaretrue？（）
A.STP timers values （hello， forward delay， max age） are included in each BPDU.
B.A switch is not concerned about its local configuration of the STP timers values. It will only consider the value of the STP timers contained in the BPDU it is receiving.
C.To successfully exchange BPDUs between two switches， their STP timers value （hello， forward delay， max age） must be the same.
D.If any STP timer value （hello， forward delay， max age） needs to be changed， it should at least be changed on the root bridge and backup root bridge.
E.On a switched network with a small network diameter， the STP hello timer can be tuned to a lower value to decrease the load on the switch CPU.
F.The root bridge passes the timer information in BPDUs to all routers in the Layer 3 configuration. -
单项选择题
Examine the diagram. A network administrator has recently installed the above switched network using 3550s and would like to control the selection of the root bridge. Which switch should theadministrator configure as the root bridge and which configuration command must theadministrator enter to accomplish this？（）
A.DSW11（config）# spanning-tree vlan 1 priority 4096
B.DSW12（config）# set spanning-tree priority 4096
C.ASW13（config）# spanning-tree vlan 1 priority 4096
D.DSW11（config）# set spanning-tree priority 4096
E.DSW12（config）# spanning-tree vlan 1 priority 4096
F.ASW13（config）# set spanning-tree priority 4096
