Whichtwostatementsaboutforwardingequivalenceclass(FEC)aretrue?()A.FECmightcorrespondtoadestinationIPsubnet,butitmightalsocorrespondtoanytrafficclassthat theedgeLSRconsiderssignificant.B.FECisagroupofIPpacketsthatisforwardedoveradifferentpath,butwiththesam

题目
Whichtwostatementsaboutforwardingequivalenceclass(FEC)aretrue?()

A.FECmightcorrespondtoadestinationIPsubnet,butitmightalsocorrespondtoanytrafficclassthat theedgeLSRconsiderssignificant.

B.FECisagroupofIPpacketsthatisforwardedoveradifferentpath,butwiththesameforwarding treatment.

C.FECisagroupofIPpacketsthatisforwardedoverthesamepath,andwiththesameforwarding treatment.

D.FECisagroupofIPpacketsthatisforwardedoveradifferentpath,butwiththedifferentforwarding treatment.

E.FECisagroupofIPpacketsthatisforwardedoverthesamepath,butwithadifferentforwarding treatment


相似考题
更多“Whichtwostatementsaboutforwardingequivalenceclass(FEC)aretrue?() ”相关问题
  • 第1题:

    WhichthreestatementsaboutLabel-SwitchedPaths(LSPs)aretrue?()

    A.LSPsarebidirectional.

    B.LSPsareunidirectional.

    C.LSPscanbesignaledbyCAC.

    D.LSPscanbeconfiguredexplicitly.

    E.LSPscanbeconfigureddynamically.


    参考答案:B, D, E

  • 第2题:

    WhichtwostatementsregardingtheWirelessLANSolutionEngine(WLSE)aretrue?()

    A.Tosupportfaultandpolicyreporting,theWLSErequiresaWirelessControlSystem(WCS).

    B.WhenWLSEdetectsanAPfailure,itautomaticallyincreasesthepowerandcellcoverageofnearbyAPs.

    C.WLSErequiresthe2700locationappliancetoofferlocationtracking.

    D.WLSEcanlocaterogueAPsandautomaticallyshutthemdown.

    E.WLSEconfigurationisdoneusingthecommandlineinterface(CLI)oraWEBbasedtemplate.


    参考答案:B, D

  • 第3题:

    WhichthreestatementsaboutMPLStrafficengineering(MPLSTE)aretrue?()

    A.MPLSTEsupportsadmissioncontrol

    B.MPLSTEtunneltrafficisalinkattributetocomputetheTEtunnelpath

    C.MPLSTEusesBGPextensiontoadvertiselinkattributes

    D.MPLSTEprovidesprotectioncapability

    E.MPLSTEusesRSVPtoestablishLSP


    参考答案:A, D, E

  • 第4题:

    WhichfourstatementsaboutanIPservicelevelagreement(SLA)aretrue?()

    A.SLAresponderknowstypeofoperation,theportused,andduration.

    B.SLAresponderinsertsinandouttimestampsinthepacketpayload.

    C.SLAsenderandresponderusetheIPSLAControlProtocoltocommunicatewitheachotherbefore

    D.SLAsenderandrespondercommunicationcanbeencrypted.

    E.SLAsenderandrespondercommunicationcanbeauthenticatedwithMD5.


    参考答案:A, B, C, E

  • 第5题:

    WhichtwostatementsaboutRPFchecksinMulticastSourceDiscoveryProtocol(MSDP)aretrue?()

    A.Itpreventsmessagelooping,SessionAdvertisement(SA)messagesmustbeRPFchecked

    B.RPFcheckshouldbedoneagainsttheroutetothesourceSofthecorrespondingPIM-SMdomain

    C.RPFcheckshouldbedoneagainsttheroutetotheRendez-vousPointofthecorrespondingPIM-SM domain,whichoriginatedtheSA

    D.RPFcheckingSessionAdvertisement(SA)messageswillcausemessagelooping


    参考答案:A, C

  • 第6题:

    关于FEC的说法,正确的有()。

    • A、支持FEC和不支持FEC功能的设备不能直接互通
    • B、FEC可分为带外FEC和带内FEC
    • C、AFEC与FEC也不能互通
    • D、AFEC比FEC更加降低系统对OSNR的要求

    正确答案:A,B,C,D

  • 第7题:

    FEC指()


    正确答案:前向纠错

  • 第8题:

    What is the role of Forwarding Equivalence Class (FEC) in MPLS?()

    • A、FEC determines how IP packets are forwarded in MPLS LSP.
    • B、FEC determines how to establish an LSP path.
    • C、FEC determines how a group of IP packets are mapped to an LSP.
    • D、FEC determines how MPLS labels are stacked in LSP.
    • E、None of above.

    正确答案:C

  • 第9题:

    FEC


    正确答案: 又叫向前纠错,是一种差错控制方法,接收端不但能发现错误,而且能确定二进制码元发生错误的位置,从而加以纠正。

  • 第10题:

    某LSR运行在DU的标签分配模式、有序的标签控制模式下,下列说法正确的是()。

    • A、该LSR收到了上游LSR针对某FEC的标签分配请求,且该LSR是该FEC的最下游设备时才可以为该FEC分配标签
    • B、该LSR收到了下游设备针对某FEC的label mapping消息时就可以为该FEC分配标签,无需等待上游的标签分配请求
    • C、该LSR是某FEC的最下游设备就可以为该FEC分配标签,无需等待上游的标签分配请求
    • D、该LSR只要收到上游设备针对某FEC的标签分配请求就可以为该FEC分配标签

    正确答案:B,C

  • 第11题:

    OTU10G板具有前向纠错FEC功能,若用在发送端应为()模式

    • A、FEC编码
    • B、FEC解码
    • C、FEC编解码

    正确答案:A

  • 第12题:

    下列哪些是100G关键技术()

    • A、PM-QPSK编码
    • B、接收机采用相干接收
    • C、FEC采用软判决FEC(SD-FEC)
    • D、相干接收采用高速电信号处理(DSP)技术

    正确答案:A,B,C,D

  • 第13题:

    下列哪些是100G关键技术()

    A.PM-QPSK编码

    B.接收机采用相干接收

    C.FEC采用软判决FEC(SD-FEC)

    D.相干接收采用高速电信号处理(DSP)技术


    参考答案:A, B, C, D

  • 第14题:

    WhichtwostatementsabouttheWLANSolutionEngine(WLSE)aretrue?()

    A.WLSEsupportscentralizedconfiguration.

    B.WLSEsupportsdistributedconfiguration.

    C.WLSEcanpickupstatisticsonadeviceevenifthedeviceisnotproperlyconfigured.

    D.WLSEcanbeusedtoupgradethefirmwareonAPsandbridges.

    E.WLSEmonitorsdevicefaultandperformanceconditionsbutcannotreportanypolicymisconfigurations


    参考答案:A, D

  • 第15题:

    Whichtwostatementsaboutthewirelesscontrolsystem(WCS)aretrue?()

    A.theCiscoWCSisdesignedtosupport1500CiscoWLANcontrollersandupto50APs

    B.theCiscoWCSrunsonadedicatednetworkdevicesuchastheCisco2700networkappliance

    C.theCiscoWCSrunsonvariouswindowsandLinuxplatforms

    D.theCiscoWCSscreendisplaysfourmainmenusheettabconsistingofMonitor,Configure,Security,andAlam

    E.theCiscoWCSusestheSNMPprotocoltocommunicatewiththecontrollers


    参考答案:C, E

  • 第16题:

    WhichtwostatementsaboutNTPversion4aretrue?()

    A.Itsupportsfastsynchronizationatstartingandbeforenetworkfailures

    B.Itsupportsautomaticserverdiscovery

    C.Itusesafixed-pointarithmetion

    D.Itsupportsthe"nanokernel"kernelimplementation

    E.ItdoesnotsupportPublic-KeyCryptography


    参考答案:B, D

  • 第17题:

    在MPLS中,FEC的角色是什么?()

    A.FEC决定IP数据包在LSP中如何转发

    B.FEC决定如何建立LSP路径

    C.FEC决定LSP如何与组对应

    D.FEC决定标签如何存储


    参考答案:C

  • 第18题:

    FEC技术可以等效提高信噪比,FEC可以提高()dB,EFEC可以提高()dB,AFEC可以提高()dB


    正确答案:3~5;7~9;5~7

  • 第19题:

    在MPLS中,FEC的角色是什么?()

    • A、FEC决定IP数据包在LSP中如何转发
    • B、FEC决定如何建立LSP路径
    • C、FEC决定LSP如何与组对应
    • D、FEC决定标签如何存储

    正确答案:C

  • 第20题:

    Which three are valid IPv6 interface addresses?()

    • A、FEC0:0:9000:0:9376:0:ABCD://EF12/128
    • B、FEC0:0:0:2000:10FF://9472:94FA:3490/128
    • C、FEC0:0:9500:0:59AB:BC12:94583:99CF/128
    • D、FEC0:FEC0:0:FEC0:1234:4321:7890:978/128
    • E、FEC0:0:9500:0:59AB:EEC12:ABCD://99CF/128

    正确答案:A,B,D

  • 第21题:

    Which two statements about forwarding equivalence class (FEC) are true?()

    • A、FEC might correspond to a destination IP subnet, but it might also correspond to any traffic class that the edge LSR considers significant.
    • B、FEC is a group of IP packets that is forwarded over a different path, but with the same forwarding treatment.
    • C、FEC is a group of IP packets that is forwarded over the same path, and with the same forwarding treatment.
    • D、FEC is a group of IP packets that is forwarded over a different path, but with the different forwarding treatment.
    • E、FEC is a group of IP packets that is forwarded over the same path, but with a different forwarding treatment

    正确答案:A,C

  • 第22题:

    编码增益是衡量前向纠错编码(FEC)纠错能力的参数。关于编码增益,以下说法错误的是()。

    • A、在保持误码率恒定条件下,采用纠错编码所节省的信噪比称为编码增益;
    • B、编码增益越大,说明FEC纠错能力越强;
    • C、带内FEC的编码增益比带外FEC的编码增益大;
    • D、AFEC的编码增益比FEC的编码增益大。

    正确答案:C

  • 第23题:

    OTU10G单板具有前向纠错(FEC)功能,若用在发送端应设置为()模式。

    • A、FEC编码
    • B、FEC解码
    • C、FEC编解码
    • D、FEC关闭

    正确答案:A