Your ARPA has two guard zones．What is the purpose of the inner guard zone ________．A.Alert the watch officer that a vessel is approaching the preset CPA limitB.Warn of small targets that are initially detected closer than the outer guard zoneC.Guard again

题目

Your ARPA has two guard zones．What is the purpose of the inner guard zone ________．

A.Alert the watch officer that a vessel is approaching the preset CPA limit

B.Warn of small targets that are initially detected closer than the outer guard zone

C.Guard against target loss during critical maneuvering situations

D.Sound an alarm for targets first detected within the zone

相似考题

1.The police warned people to be _________ for pickpockets during the Christmas rush.A.at guardB.on earsC.guard our attentionD.on guard

2.Which step should be taken，if possible，when the vessel must be abandoned because of a distress situation ________．A.Alert the Coast Guard by using the survival craft's portable INMARSAT unitB.Program the SART and EPIRB to transmit the vessel's location and situationC.Place the SART and EPIRB in the“ON”position and secure them to the survival craftD.No additional steps are needed as the SART and EPIRB will both automatically float free and operate properly

3.Your vessel is being assisted through an ice field in Thunder Bay by the Canadian Coast Guard icebreaker Alexander Henry．The starboard lookout reports that the icebreaker has run up the code flag N（November）．What action should you take ________．A.Reduce speedB.Stop your enginesC.Reverse your enginesD.Stop your vessel instantly

4.The security guard _____ two men who were yelling in the courtroom.[A] expelled[B] propelled[C] repelled[D] dispelled

更多“Your ARPA has two guard zones.What is the purpose of the inner guard zone ________.A.Alert ”相关问题

  • 第1题：

    The security guard_two men who were yelling in the courtroom.

    A.expelled
    B.propelled
    C.repelled
    D.dispelled

    答案：A
    解析：
    expel“赶走”。句意：警卫人员把在法庭上大声喊叫的两个男人赶了出去。四词皆含pel，该词根意为“推动，催逼”。B.propel“推进，推动”（=push forward），如：The ship is propelled by steam。C.repel“击退，排斥，拒绝”，如：repel the enemy击退敌人。[D]dispel“驱散（云、雾等）”。

  • 第2题：

    Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？（）

    • A、Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannot.
    • B、UDLD protects against STP failures caused by cabling problems that create one-way links.
    • C、Loop guard detects and protects against duplicate packets being received and transmitted on different ports.
    • D、UDLD protects against unidirectional cabling problems on copper and fiber media.
    • E、Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.

    正确答案:B,E

  • 第3题：

    What is the result of entering the command spanning-tree loopguard default？（）

    • A、The command enables both loop guard and root guard.
    • B、The command changes the status of loop guard from the default of disabled to enabled.
    • C、The command activates loop guard on point-to-multipoint links in the switched network.
    • D、The command will disable EtherChannel guard.

    正确答案:B

  • 第4题：

    Which two statements are true about BPDU port-guard and BPDU filtering？（）

    • A、BPDU port-guard can be enabled globally， whereas BPDU filtering must be enabled on a per-interface basis.
    • B、When globally enabled， BPDU port-guard and BPDU filtering apply only to PortFast enabled ports.
    • C、When globally enabled， BPDU port-guard and BPDU filtering apply only to trunking-enabled ports.
    • D、When a BPDU is received on a BPDU port-guard enabled port， the interface goes into the err-disabled state.
    • E、When a BPDU is received on a BPDU filtering enabled port， the interface goes into the err-disabled state.
    • F、When a BPDU is received on a BPDU filtering enabled port， the interface goes into the STP blocking state.

    正确答案:B,D

  • 第5题：

    What two features in Cisco switches help prevent Layer 2 loops？（）

    • A、UniDirectional Link Detection
    • B、Hot Standby Router Protocol
    • C、Virtual Router Redundancy Protocol
    • D、PortFast
    • E、root guard
    • F、loop guard

    正确答案:A,F

  • 第6题：

    单选题
    When using the ARPA in heavy rain，which action should you take? （）
    A

    Increase the radar gain to pick up weak echoes through the rain

    B

    Increase the STC setting to reduce close-in spurious signals

    C

    Navigate as though the effective range of the radar has been reduced

    D

    Increase the range of the inner and outer guard rings


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    Your ARPA has two guard zones.What is the purpose of the inner guard zone（）.
    A

    Alert the watch officer that a vessel is approaching the preset CPA limit

    B

    Warn of small targets that are initially detected closer than the outer guard zone

    C

    Guard against target loss during critical maneuvering situations

    D

    Sound an alarm for targets first detected within the zone


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the following is true according to the passage?
    A

    The man was a heavy smoker.

    B

    The man smiled to please the guard.

    C

    The guard set the man free with permission.

    D

    The man hadn’t thought the guard would set him free.


    正确答案： A
    解析：
    文章第二段倒数第三句提到“Suddenly, without another word, he unlocked my cell and silently led me out”警卫突然二话不说打开了牢门，悄悄地带他逃离监狱。由此可见，作者根本没有想到警卫会把自己放走。故选D。

  • 第9题：

    单选题
    Your ARPA has been tracking a target and has generated the targets course and speed.The radar did not receive a target echo on its last two scans due to the weather.What should you expect under these circumstances（）.
    A

    The ARPA will generate data as if the target was still being tracked by radar

    B

    The ARPA will give an audible and/or visual lost target alarm

    C

    The ARPA will generate data based on sea return echoes from the vicinity where the target was lost

    D

    The ARPA has lost all memory of the target and must recompute the target data


    正确答案： B
    解析： 暂无解析

  • 第10题：

    多选题
    Which of the following characteristics describe the Root Guard feature？（Choose all that apply.）（）
    A

    The port must be put into forwarding state manually after root-inconsistent state has beencorrected

    B

    A Root Guard port receiving superior BPDU goes into a root-inconsistent state

    C

    A Root Guard port receiving inferior BPDU goes into a root-inconsistent state

    D

    While the port is in a root-inconsistent state no user data is sent across that port

    E

    The port returns to a forwarding state if inferior BPDUs stop

    F

    It should be applied to all switch ports


    正确答案： C,B
    解析： 暂无解析

  • 第11题：

    单选题
    The network administrator has enabled BPDU guard on the LAN.  Why is an effective way to prevent an unauthorized rogue switch from altering the spanning-tree topology of this network？ （）
    A

    BPDU guard can be used to prevent invalid BPDUs from propagating throughout the network. 

    B

    BPDU guard can guarantee proper selection of the root bridge.

    C

    BPDU guard can be utilized to prevent the switch from transmitteing BPDUs and incorrectly altering the root bridge election.

    D

    BPDU guard can be utilized along with PortFast to shut down ports when a switch is connected to the port.

    E

    None of the other alternatives apply


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Coast Guard regulations require a shipboard Oil Pollution Emergency Plan to be reviewed（）.
    A

    annually

    B

    once every two years

    C

    once every four years

    D

    once every five years


    正确答案： D
    解析： 暂无解析

  • 第13题：

    Which of the following characteristics describe the BPDU Guard feature（）

    • A、ABPDU Guard port should only be configured on ports with PortFast enabled.
    • B、BPDU Guard and PortFast should not be enabled on the same port.
    • C、BPDU Guard is used to ensure that superior BPDUs are not received on a switch port.
    • D、ABPDU Guard port receiving a BPDU will go into err-disablestate.
    • E、ABPDU Guard port receiving a BPDU will be disabled.
    • F、BPDU Guard can be enabled on any switch port.

    正确答案:A,E

  • 第14题：

    The network administrator has enabled BPDU guard on the LAN.  Why is an effective way to prevent an unauthorized rogue switch from altering the spanning-tree topology of this network？ （）

    • A、BPDU guard can be used to prevent invalid BPDUs from propagating throughout the network. 
    • B、BPDU guard can guarantee proper selection of the root bridge.
    • C、BPDU guard can be utilized to prevent the switch from transmitteing BPDUs and incorrectly altering the root bridge election.
    • D、BPDU guard can be utilized along with PortFast to shut down ports when a switch is connected to the port.
    • E、None of the other alternatives apply

    正确答案:D

  • 第15题：

    Which of the following characteristics describe the Root Guard feature？（Choose all that apply.）（）

    • A、The port must be put into forwarding state manually after root-inconsistent state has beencorrected
    • B、A Root Guard port receiving superior BPDU goes into a root-inconsistent state
    • C、A Root Guard port receiving inferior BPDU goes into a root-inconsistent state
    • D、While the port is in a root-inconsistent state no user data is sent across that port
    • E、The port returns to a forwarding state if inferior BPDUs stop
    • F、It should be applied to all switch ports

    正确答案:B,D

  • 第16题：

    What is the purpose of the STP PortFast BPDU guard feature？ （）

    • A、enforce the placement of the root bridge in the network
    • B、ensure that a port is transitioned to a forwarding state quickly if a BPDU is received
    • C、enforce the borders of an STP domain
    • D、ensure that any BPDUs received are forwarded into the STP domain

    正确答案:C

  • 第17题：

    单选题
    What is the result of entering the command spanning-tree loopguard default？（）
    A

    The command enables both loop guard and root guard.

    B

    The command changes the status of loop guard from the default of disabled to enabled.

    C

    The command activates loop guard on point-to-multipoint links in the switched network.

    D

    The command will disable EtherChannel guard.


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    Which statement is true about loop guard？（）
    A

    Loop guard only operates on interfaces that are considered point-to-point by the spanning tree.

    B

    Loop guard only operates on root ports.

    C

    Loop guard only operates on designated ports.

    D

    Loop guard only operates on edge ports.


    正确答案： C
    解析： 暂无解析

  • 第19题：

    多选题
    Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？ （）
    A

    Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannot

    B

    UDLD protects against STP failures caused by cabling problems that create one-way links.

    C

    Loop guard detects and protects against duplicate packets being received and transmitted on different ports

    D

    UDLD protects against unidirectional cabling problems on copper and fiber media.

    E

    Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.


    正确答案： D,E
    解析： 暂无解析

  • 第20题：

    多选题
    What two features in Cisco switches help prevent Layer 2 loops？（）
    A

    UniDirectional Link Detection

    B

    Hot Standby Router Protocol

    C

    Virtual Router Redundancy Protocol

    D

    PortFast

    E

    root guard

    F

    loop guard


    正确答案： F,D
    解析： 暂无解析

  • 第21题：

    单选题
    Where would you find a list of the lifesaving equipment onboard your supply boat? （）
    A

    Ship's Articles

    B

    Muster List (Station Bill)

    C

    Certificate of Inspection

    D

    Coast Guard Regulations


    正确答案： C
    解析： 暂无解析

  • 第22题：

    多选题
    Which of the following characteristics describe the BPDU Guard feature（）
    A

    ABPDU Guard port should only be configured on ports with PortFast enabled.

    B

    BPDU Guard and PortFast should not be enabled on the same port.

    C

    BPDU Guard is used to ensure that superior BPDUs are not received on a switch port.

    D

    ABPDU Guard port receiving a BPDU will go into err-disablestate.

    E

    ABPDU Guard port receiving a BPDU will be disabled.

    F

    BPDU Guard can be enabled on any switch port.


    正确答案： A,B
    解析： 暂无解析

  • 第23题：

    单选题
    What will cause the ARPA to emit a visual alarm，audible alarm，or both?（）
    A

    An acquired target entering into a guard zone

    B

    A tracked target lost for one radar scan

    C

    A tracked target entering your preset CPA-TCPA limits

    D

    A target being initially detected within a guard zone


    正确答案： C
    解析： 暂无解析

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