单项选择题

A.hello timerB.BPDU timerC.Forward_delay timerD.Max_age……

If the root bridge fails， configuration BPDUs will no longer be sent. Which STP timer will have toexpire before the other switches can actively restore connectivity with topology change procedureof STP？（）

A.hello timer
B.BPDU timer
C.Forward_delay timer
D.Max_age timer
E.Dead timer
F.Wait timer

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热门试题

多项选择题Given the above diagram and assuming that STP is enabled on all switch devices， which twostatements are true？（）

A.DSW11willbe elected the root bridge
B.DSW12 will be elected the root bridge
C.ASW13 will be elected the root bridge
D.P3/1 will be elected the nondesignated port
E.P2/2 will be elected the nondesignated port
F.P3/2 will be elected the nondesignated port

问答题Refer to the output shown on switch SW1 below： Warning： Spantree port fast start should only be enabled on ports connected to a single host.Connecting hubs， concentrators， switches， bridges， etc. to a fast start port can cause temporaryspanning tree loops. Use with caution. Spantree ports 4 1-24 fast start enabled. What command could you enter to reproduce this output？

问答题Refer to the output shown on switch SW1 below： VLAN 1 bridge priority set to 8192. VLAN 1 bridge max aging time set to 20.VLAN 1 bridge hello time set to 2. VLAN 1 bridge forward delay set to 15. Switch is now the root switch for active VLAN 1. What command would you enter to reproduce this output？

单项选择题Exhibit： Assuming that VLAN 1 and VLAN 2 traffic is enabled on the above network， what effect will thefollowing command have when entered on port 0 2 on switch SWA？（） spanning-tree vlan 1 port-priority 16

A.VLAN 1 traffic will be blocked on Switch SWB port 1/1
B.VLAN 2 traffic will be blocked on Switch SWB port 1/1
C.VLAN 2 traffic will be blocked on Switch SWA port 0/2
D.VLAN 1 and 2 traffic will be blocked on Switch SWA port 0/1
E.VLAN 1 and 2 traffic will be blocked on Switch SWA port 0/2

多项选择题Refer to the exhibit. All network links are FastEthernet. Although there is complete connectivitythroughout the network， Front Line users have been complaining that they experience slowernetwork performance when accessing the server farm than the Reception office experiences.Based on the exhibit， which two statements are true？（）

A.Disabling the Spanning Tree Protocol would improve network performance
B.Changing the bridge priority of S1 to 36864 would improve network performance
C.Changing the bridge priority of S1 to 4096 would improve network performance
D.Changing the bridge priority of S3 to 4096 would improve network performance
E.Upgrading the link between S2 and S3 to Gigabit Ethernet would improve performance
F.Changing the bridge priority of S2 to 36864 would improve network performance