When troubleshooting the issue， you notice the election of a new root bridge with an unknown MAC address. Knowing that all access ports have the PortFast feature enabled， what would be the easiest way to resolve the issue without losing redundant links？（）

题目

When troubleshooting the issue， you notice the election of a new root bridge with an unknown MAC address. Knowing that all access ports have the PortFast feature enabled， what would be the easiest way to resolve the issue without losing redundant links？（）

  • A、Enable bpduguard globally.
  • B、Enable rootguard.
  • C、Enable loopguard.
  • D、Enable spanning tree.
  • E、Enable UDLD
相似考题

1.When troubleshooting an 802.11g network. Which of the following can interfere with the network?()A. 2.4 GHz cordless phoneB. 900 MHz cordless phoneC. Bluetooth headsetD. Bluetooth printer

2.When troubleshooting a Frame Relay connection, what is the first step when performing a loopback test?()A.Set the encapsulation of the interface to HDLCB.Place the CSU/DSU in local-loop modeC.Enable local-loop mode on the DCE Frame Relay routerD.Verify that the encapsulation is set to Frame Relay

3.When troubleshooting a Frame Relay connection, what is the first step when performing a loopback test?（）A、Set the encapsulation of the interface to HDLCB、Place the CSU/DSU in local-loop modeC、Enable local-loop mode on the DCE Frame Relay routerD、Verify that the encapsulation is set to Frame Relay

4.When an administrator is troubleshooting a system, which of the following describes the NEXT course of action if a change does not solve the problem?()A. Establish a new theory of probable cause.B. Reverse the change.C. Implement the next logical change.D. Perform a root cause analysis.

更多“When troubleshooting ”相关问题

  • 第1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

  • 第2题：

    Which of the following is unsafe for a technician to use when troubleshooting or repairing a CRT monitor?（）

    • A、Anti-static pad
    • B、Anti-static wrist strap
    • C、Rubber gloves
    • D、Multimeter

    正确答案:B

  • 第3题：

    A technician is troubleshooting a user’s problem; important Windows services are not starting. In which of the following locations should the technician check to investigate when these services started or stopped?（）

    • A、Com+.log
    • B、System Log
    • C、Security Log
    • D、Application Log

    正确答案:B

  • 第4题：

    Which of the following are the FIRST actions to take when an administrator is troubleshooting aserver?（）

    • A、Make one change at a time and test/confirm the change has resolved the problem.
    • B、Verify full system functionality.
    • C、Replicate the problem.
    • D、Determine if a common element is causing multiple problems.
    • E、Identify any changes to the server.

    正确答案:C,E

  • 第5题：

    单选题
    An administrator is troubleshooting wireless connectivity issues at a client’s office and discoversthat the machine loses connectivity when the wireless phone is being used. Which of the following WAPS should be installed to help resolve the issue?（）
    A

    802.1 1g

    B

    802.1X

    C

    802.11n

    D

    802.11b


    正确答案： D
    解析： 暂无解析

  • 第6题：

    多选题
    When you are troubleshooting duplex mismatches， which two errors are typically seen on the full- duplexend？（）
    A

    runts

    B

    FCS errors

    C

    interface resets

    D

    late collisions


    正确答案： C,A
    解析： 暂无解析

  • 第7题：

    单选题
    Which of the following is the FIRST step a technician should take when troubleshooting a device issue？（）
    A

    Gather information from the customer.

    B

    Isolate the problem on the device.

    C

    Read the service documentation for possible causes.

    D

    Check the parts life counters.


    正确答案： B
    解析： 暂无解析

  • 第8题：

    多选题
    Which of the following are the FIRST actions to take when an administrator is troubleshooting aserver?（）
    A

    Make one change at a time and test/confirm the change has resolved the problem.

    B

    Verify full system functionality.

    C

    Replicate the problem.

    D

    Determine if a common element is causing multiple problems.

    E

    Identify any changes to the server.


    正确答案： B,C
    解析： 暂无解析

  • 第9题：

    单选题
    Which of the following is the FIRST step when troubleshooting an issue？（）
    A

    Identify the problem.

    B

    Verify full system functionality.

    C

    Document all findings.

    D

    Establish a theory of probable cause.


    正确答案： A
    解析： 暂无解析

  • 第10题：

    多选题
    When you are troubleshooting duplex mismatches， which two errors are typically seen on the fullduplex end？（）
    A

    runts

    B

    FCS errors

    C

    interface resets

    D

    late collisions


    正确答案： B,C
    解析： 暂无解析

  • 第11题：

    When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?（）

    • A、show ip access-list
    • B、show access-list
    • C、list ip interface
    • D、show interface
    • E、show ip interface

    正确答案:E

  • 第12题：

    When an administrator is troubleshooting a system， which of the following describes the NEXT course of action if a change does not solve the problem？（）

    • A、 Establish a new theory of probable cause.
    • B、 Reverse the change.
    • C、 Implement the next logical change.
    • D、 Perform a root cause analysis.

    正确答案:B

  • 第13题：

    Which of the following is the LAST step an administrator should take when troubleshooting an issue？（）

    • A、 Identify changes to the system.
    • B、 Replicate the problem in the system.
    • C、 Verify full system functionality. 
    • D、 Implement the solution.

    正确答案:C

  • 第14题：

    When troubleshooting hardware issues with a server， which of the following is MOST likely to cause a problem in receiving vendor support？（）

    • A、 Third party cables
    • B、 Third party memory
    • C、 Signed drivers
    • D、 Server type

    正确答案:B

  • 第15题：

    单选题
    When an administrator is troubleshooting a system， which of the following describes the NEXT course of action if a change does not solve the problem？（）
    A

     Establish a new theory of probable cause.

    B

     Reverse the change.

    C

     Implement the next logical change.

    D

     Perform a root cause analysis.


    正确答案： C
    解析： 暂无解析

  • 第16题：

    单选题
    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
    解析： 暂无解析

  • 第17题：

    单选题
    Which of the following is the LAST step an administrator should take when troubleshooting an issue？（）
    A

     Identify changes to the system.

    B

     Replicate the problem in the system.

    C

     Verify full system functionality. 

    D

     Implement the solution.


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    Which of the following should be done FIRST when troubleshooting a problem？（）
    A

    Test the theory to determine the cause

    B

    Perform a root cause analysis

    C

    Establish a plan of action

    D

    Document outcomes


    正确答案： B
    解析： 暂无解析

  • 第19题：

    多选题
    When troubleshooting duplex mismatches， which two are errors that are typically seen on the half duplexend？（）
    A

    excessive collisions

    B

    FCS errors

    C

    runts

    D

    late collisions


    正确答案： D,A
    解析： 暂无解析

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