单选题IEEE 802.1w is a Rapid Spanning Tree Protocol （RSTP） that can be seen as an evolution of the 802.1 standard. What are the port roles described by 802.1w？（）A root port，designated port，alternate port，backup port，and disabledB standby port，alternate port，

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单选题

IEEE 802.1w is a Rapid Spanning Tree Protocol （RSTP） that can be seen as an evolution of the 802.1 standard. What are the port roles described by 802.1w？（）

root port，designated port，alternate port，backup port，and disabled

standby port，alternate port，root port，and disabled

standby port，designated port，backup port，and disabled

root port，designated port，alternate port，and standby port

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相似问题和答案

第1题：

Which command enables RSTP on a switch?()

A. spanning-tree mode rapid-pvst

B. spanning-tree uplinkfast

C. spanning-tree backbonefast

D. spanning-tree mode mst

参考答案：A

第2题：

Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？（）

A、Designated Root Cost
B、bridge ID priority
C、max age
D、bridge ID MAC address
E、Designated Root Priority
F、forward delay

正确答案:B,D

第3题：

要在交换机上运行802.1w,可使用哪个命令来启用该协议?()

A.Switch(config)#spanning-tree mode rapid-pvst

B.Switch#spanning-tree mode rapid-pvst

C.Switch(config)#spanning-tree mode 802.1w

D.Switch#spanning-tree mode 802.1w

答案：A

第4题：

The Company network utilizes the Multiple-instance Spanning Tree protocol in its switched LAN. Which three statements about the MST protocol （IEEE 802.1S） are true？（）

A、 To verify the MST configuration， the show pending command can be used in MST configuration mode.
B、 When RSTP and MSTP are configured； UplinkFast and BackboneFast must also be enabled.
C、 All switches in the same MST region must have the same VLAN-to-instance mapping， but different configuration revision numbers.
D、 All switches in an MST region， except distribution layer switches， should have their priority lowered from the default value 32768.
E、 An MST region is a group of MST switches that appear as a single virtual bridge to adjacent CST and MST regions.
F、 Enabling MST with the "spanning-tree modemst" global configuration command also enables RSTP.

正确答案:A,E,F

第5题：

Which spanning Tree Protocol has been implemented on switch 2？（）

A、STP/IEEE 802.1D
B、MSTP/IEEE 802.1s
C、PVST+
D、PVRST
E、None of the other alternatives apply

正确答案:C

第6题：

Which command enables RSTP on aswitch?()

A.spanning-tree mode rapid-pvst

B.spanning-tree uplinkfast

C.spanning-tree backbonefast

D.spanning-tree mode mst

参考答案：A

第7题：

哪个命令可以在交换机启用RSTP？（）

A、 spanning-tree mode rapid-pvst
B、 spanning-tree uplinkfast
C、 spanning-tree backbonefast
D、 spanning-tree mode mst

正确答案:A

第8题：

Which four Cisco Spanning Tree Protocol enhancements are supported with rapid per－VLAN Spanning－Tree plus?()

A. PortFast

B. UplinkFast

C. loop guard

D. root guard

E. BPDU guard

F. BackboneFast

参考答案：A, C, D, E

第9题：

Which four Cisco priority Spanning Tree Protocol enhancements are supported with rapid per-VLAN Spanning Tree？（）

A、 PortFast
B、 UplinkFast
C、 loop guard
D、 root guard
E、 BPDU guard
F、 BackboneFast

正确答案:A,C,D,E

第10题：

What will occur when a nonedge switch port that is configured for Rapid Spanning Tree does not receive a BPDU from its neighbor for three consecutive hello time intervals？（）

A、RSTP information is automatically aged out.
B、The port sends a TCN to the root bridge.
C、The port moves to listening state.
D、The port becomes a normal spanning tree port.

正确答案:A

IEEE 802.1w is a Rapid Spanning Tree Protocol （RSTP） that ca

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