A.The BID is made up of the bridge priority value（two bytes） and bridge MAC address （six bytes）.
B.The BID is made up of the bridge priority （four bits）， the system ID （12 bits）， and a bridge MAC address （48 bits）.
C.The BID is made up of the system ID （six bytes） and bridge priority value （two bytes）.
D.The system ID value is the VLAN ID （VID）.
E.The system ID value is a unique MAC address allocated from a pool of MAC addresses assigned to the switch or module.
F.The system ID value is a hex number used to measure the preference of a bridge in the spanning-tree algorithm.
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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.
A.HSRP
B.GLBP
C.VRRP
D.SLB
E.RPR
F.RPR+
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.
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
Given the above diagram and assuming that STP is enabled on all switch devices，
which two statements are true？（）
A.DSW11 will be 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.
最新試題
Refer to the exhibit. What command was issued on the Layer 3 switch Sw1 between Exhibit #1 and Exhibit #2？（）
Which option correctly identifies the Cisco IOS switching methods in descending order from the fastest method to the slowest method？（）
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？ （）
Which two statements about the various implementations of STP are true？（）
During routine maintenance， G1/0/1 on DS1 was shutdown. All other interface were up. DS2 became the active HSRP device for Vlan101 as desired. However， after G1/0/1 on DS1 was reactivated. DS1 did not become the active HSRP device as desired. What need to be done to make the group for Vlan101 function properly ？ （）
Refer to the exhibit. Which Virtual Router Redundancy Protocol （VRRP） statement is true about the roles of the master virtual router and the backup virtual router？（）
During routine maintenance， it became necessary to shutdown G1/0/1 on DS1 and DS2. All other interface were up. During this time， DS1 became the active device for Vlan104’s HSRP group. As related to Vlan104’s HSRP group. What can be done to make the group function properly ？ （）
Refer to the exhibit. LACP has been configured on Switch1 as shown. Which is the correct command set to configure LACP on Switch2？（）
Refer to the exhibit. On the basis of the output of the show spanning-tree inconsistentports command， which statement about interfaces FastEthernet 0/1 and FastEthernet 0/2 is true？（）
Refer to the exhibit. Which statement is true about the output？（）