更多“单选题Which command enables RSTP on a switch?()A spanning-tree mode rapid-pvstB spanning-tree uplinkfastC spanning-tree backbonefastD spanning-tree mode mst”相关问题
  • 第1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2题:

    Which spanning-tree command would cause a PortFast-enabled interface to lose its PortFast-operational status and disable BPDU filtering if it receives BPDUs?()

    • A、spanning-tree guard root
    • B、spanning-tree portfast bpduguard default
    • C、spanning-tree bpduguard enable
    • D、spanning-tree bpdufilter enable
    • E、spanning-tree portfast bpdufilter default

    正确答案:E

  • 第3题:

    A port in a redundant topology is currently in the blocking state and is not receiving BPDUs. To ensure that this port does not erroneously transition to the forwarding state,  which command should be configured to satisfy the requirement?()

    • A、Switch(config)#spanning-tree loopguard default
    • B、Switch(config-if)#spanning-tree bdpufilter
    • C、Switch(config)#udld aggressive
    • D、Switch(config-if)#spanning-tree bpduguard

    正确答案:A

  • 第4题:

    hy you use Spanning-tree? Difference between PVST & MST.


    正确答案: We uses STP to privides path redundancy while preventing loops in layer 2 network environment.
    Difference between PVST and MSTP:
    PVST maintains a STP instance for each vlan,while MSTP maintain one instance for multiple vlans belong to the the same instance-vlan map.
    MSTP uses RSTP for more rapid convergence than PVST.

  • 第5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6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

    正确答案:A

  • 第7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

    正确答案:C

  • 第8题:

    单选题
    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


    正确答案: C
    解析: 暂无解析

  • 第9题:

    单选题
    Which of the following commands can be issued without interfering with the operation of loop guard?()
    A

    Switch(config-if)#spanning-tree guard root

    B

    Switch(config-if)#spanning-tree portfast

    C

    Switch(config-if)#switchport mode trunk

    D

    Switch(config-if)#switchport mode access


    正确答案: C
    解析: 暂无解析

  • 第10题:

    问答题
    hy you use Spanning-tree? Difference between PVST & MST.

    正确答案: We uses STP to privides path redundancy while preventing loops in layer 2 network environment.
    Difference between PVST and MSTP:
    PVST maintains a STP instance for each vlan,while MSTP maintain one instance for multiple vlans belong to the the same instance-vlan map.
    MSTP uses RSTP for more rapid convergence than PVST.
    解析: 暂无解析

  • 第11题:

    单选题
    Which term describes a spanning-tree network that has all switch ports in either the blocking or forwardingstate? ()
    A

    redundant

    B

    spanned

    C

    provisioned

    D

    converged


    正确答案: C
    解析: 暂无解析

  • 第12题:

    单选题
    A port in a redundant topology is currently in the blocking state and is not receiving BPDUs. To ensure that this port does not erroneously transition to the forwarding state,  which command should be configured to satisfy the requirement?()
    A

    Switch(config)#spanning-tree loopguard default

    B

    Switch(config-if)#spanning-tree bdpufilter

    C

    Switch(config)#udld aggressive

    D

    Switch(config-if)#spanning-tree bpduguard


    正确答案: B
    解析: 暂无解析

  • 第13题:

    Which of the following commands can be issued without interfering with the operation of loop guard?()

    • A、Switch(config-if)#spanning-tree guard root
    • B、Switch(config-if)#spanning-tree portfast
    • C、Switch(config-if)#switchport mode trunk
    • D、Switch(config-if)#switchport mode access

    正确答案:C

  • 第14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

    正确答案:A

  • 第15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16题:

    Which term describes a spanning-tree network that has all switch ports in either the blocking or forwardingstate? ()

    • A、redundant
    • B、spanned
    • C、provisioned
    • D、converged

    正确答案:D

  • 第17题:

    Which configuration is used to enable root guard?()

    • A、interface gig3/1  spanning-tree guard root
    • B、interface gig3/1  spanning-tree root guard
    • C、interface gig3/1  spanning-tree root-guard
    • D、interface gig3/1  spanning-tree root-guard default

    正确答案:A

  • 第18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

    正确答案:A,C,D,E

  • 第19题:

    In which Spanning-Tree states does a switch port learn MAC addresses?()

    • A、Blocking
    • B、Listening
    • C、Forwarding
    • D、Learning
    • E、Relaying

    正确答案:C,D

  • 第20题:

    单选题
    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


    正确答案: B
    解析: 暂无解析

  • 第21题:

    单选题
    Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state?()
    A

    redundant

    B

    spanned

    C

    provisioned

    D

    converged


    正确答案: D
    解析: 暂无解析

  • 第22题:

    单选题
    Which configuration is used to enable root guard?()
    A

    interface gig3/1  spanning-tree guard root

    B

    interface gig3/1  spanning-tree root guard

    C

    interface gig3/1  spanning-tree root-guard

    D

    interface gig3/1  spanning-tree root-guard default


    正确答案: A
    解析: 暂无解析

  • 第23题:

    多选题
    In which Spanning-Tree states does a switch port learn MAC addresses?()
    A

    Blocking

    B

    Listening

    C

    Forwarding

    D

    Learning

    E

    Relaying


    正确答案: C,A
    解析: 暂无解析

  • 第24题:

    单选题
    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
    解析: 暂无解析