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单项选择题

Examine the diagram. A network administrator has recent……

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

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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 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.

多项选择题WhichtwostatementsconcerningSTPstatechangesaretrue？（）

A.Upon bootup，a port transitions from blocking to forwarding because it assumes itself as root.
B.Upon bootup，a port transitions from blocking to listening because it assumes itself as root.
C.Upon bootup，a port transitions from listening to forwarding because it assumes itself as root.
D.If a forwarding port receives no BPDUs by the max_age time limit， it will transition to listening.
E.If a forwarding port receives an inferior BPDU， it will transition to listening.
F.If a blocked port receives no BPDUs by the max_age time limit， it will transition to listening.

多项选择题In a customer’s network， VLAN Trunking Protocol （VTP） is running with a domain named main1. VLANs 1，2，3，4，5，10，20 are active on the network. Suddenly the whole network goes down. No traffic is being passed on VLANs 2，3，4，5，10，20， however traffic passes on VLAN 1 and indicates all switches are operational. Right before the network problem occurred， a switch named TEST1 was added to the network.  What three configuration issues on TEST1 could be causing the network outage？（）

A.TEST1 is configured as a VTP server with a different domain name.
B.TEST1 is not configured to participate in VTP.
C.TEST1 is configured as a VTP server with the domain name main1.
D.TEST1 has a lower VTP configuration revision than the current VTP revision.
E.TEST1 has a higher VTP configuration revision than the current VTP revision.
F.TEST1 is configured with only VLAN1.

判断题- DS1（ Distribute switch 1） is the primary device for Vlan 101， 102， 105 - DS2 （ Distribute switch 2） is the primary device for Vlan 103 and 104

判断题VLAN Trunk Protocol （VTP） reduces administration in a switched network. When you configure a new VLAN on one VTP server， the VLAN is distributed through all switches in the domain. This reduces the need to configure the same VLAN everywhere. VTP is a Cisco-proprietary protocol that is available on most of the Cisco Catalyst series products. There is a Lab（about VTP） in the cisco CCNP BCMSN 642-812 exam.   Requirements：    These are your specifc tasks：  1. Configure the VTP information with the distribution layer switch as the VTP server  2. Configure the VTP information with the access layer switch as a VTP client  3. Configure VLANs on the distribution layer switch  4. Configure inter-VLAN routing on the distribution layer switch  5. Specific VLAN port assignments will be made as users are added to the access layer switches in the future.  6. All VLANs and VTP configurations are to completed in the global configuration To configure the switch Click on the host icon that is connected to the switch be way of a serial console cable.