CMS专题

单选题The classic Spanning Tree Protocol (802.1 D 1998) uses which sequence of variables to determine thebest received BPDU?()A 1) lowest root bridge id,2) lowest sender bridge id,3) lowest port id,4) lowest root path costB 1) lowest root path cost,2) lowest

题目
单选题
The classic Spanning Tree Protocol (802.1 D 1998) uses which sequence of variables to determine thebest received BPDU?()
A

1) lowest root bridge id,2) lowest sender bridge id,3) lowest port id,4) lowest root path cost

B

1) lowest root path cost,2) lowest root bridge id,3) lowest sender bridge id,4) lowest sender port id

C

1) lowest root bridge id,2) lowest sender bridge id,3) lowest root path cost,4) lowest sender port id

D

1) lowest root bridge id,2) lowest root path cost,3) lowest sender bridge id,4) lowest sender port id

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相似问题和答案

第1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:

定义MSTP(Multiple Spanning Tree Protocol)的是()。

A.802.1d

B.802.1q

C.802.1w

D.802.1s


答案:D

第4题:

The classic Spanning Tree Protocol (802.1D 1998) uses which sequence of variables to determine the best received BPDU?()

  • A、 1) lowest root bridge id,2)lowest sender bridge id,3)lowest port id,4)lowest root path cost
  • B、 1) lowest root path cost,2)lowest root bridge id,3)lowest sender bridge id,4)lowest sender port id
  • C、 1) lowest root bridge id,2)lowest sender bridge id,3)lowest root path cost 4)owest sender port id
  • D、 1) lowest root bridge id,2)lowest root path cost,3)lowest sender bridge id,4)lowest sender port id

正确答案:D

第5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6题:

Which command enhances the 802.1D convergence time on ports that are connected to hosts?()

A. spanning-tree backbonefast

B. spanning-tree uplinkfast

C. spanning-tree portfast

D. spanning-tree cost512


参考答案:C

第7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8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9题:

Which of the following conditions guarantees that a broadcast storm cannot occur?()

  • A、a native VLAN mismatch on either side of an 802.1Q link
  • B、BPDU filter configured on a link to another switch
  • C、Spanning Tree Protocol enabled on both Layer 2 and multilayer switches
  • D、PortFast enabled on all access and trunk ports

正确答案:C

第10题:

pany uses MSTP within their switched LAN.  What is the main purpose of Multiple Instance  Spanning Tree Protocol (MSTP)?()

  • A、 To enhance Spanning Tree troubleshooting on multilayer switches
  • B、 To reduce the total number of spanning tree instances necessary for a particular topology 
  • C、 To provide faster convergence when topology changes occur in a switched network
  • D、 To provide protection for STP when a link is unidirectional and BPDUs are being sent but not  received
  • E、 None of the other alternatives apply

正确答案:B

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