Which of the following improves wireless performance by allowing only one wireless transmissionon the network at a time?()A. CSMA/CAB. CSMA/CDC. Wireless encryptionD. Wireless bonding

题目
Which of the following improves wireless performance by allowing only one wireless transmissionon the network at a time?()

A. CSMA/CA

B. CSMA/CD

C. Wireless encryption

D. Wireless bonding

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1.下面哪些英文含义表示具备为无线功能。()A.Wi-FiB.WlanC.WWWD.Wireless

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3.EDI最早应用的通信模式是( )。A．LANB．PTPC．WAND．WIRELESS

4.The most widely used LAN system is ______ which adopts a form. of access known as CSMA-CD．A．EthemetB．ATMC．FDDID．Wireless

更多“Which of the following improves wireless performance by allowing only one wireless transmissionon the network at a time?() ”相关问题

  • 第1题：

    Theintegratedservicesroutingarchitectureprovidestheperformance，availability，andreliabilityneededtoscalemission-criticalbusinessapplicationsinthemostdemandingenvironments.WhichstatementbestdescribesthebenefitsofCiscoIntegratedServicesRouters？（）

    A.ISRsprovidethreatdefenseagainstattacksfromhackersandvirusesthatcanoccurinthenetwork.

    B.ISRsprovidetheframeworktointegrateandextendwiredandwirelessnetworks

    C.ISRsprovideconcurrentsecurity，voice，data，wireless，andapplicationoptimizationservices.

    D.ISRSprovidethecommonfabric，functionality，andCLIacrossthenetwork.


    参考答案：C

  • 第2题：

    WhichoptiondescribesthedefaultrolesavailabletoRBAConCiscoNexusswitches?()

    A.admin，operator，network-admin，andnetwork-operator

    B.admin，read-only，network-admin，andnetwork-operator

    C.vdc-admin，vdc-operator，network-admin，andnetwork-operator

    D.vdc-admin，vdc-operator，network-admin，andnetwork-operator（forNexus7000）andnetwork-adminandnetwork-operator（forotherNexusswitches）

    E.adminandread-only


    参考答案：D

  • 第3题：

    网络层是电子商务的硬件基础设施，是信息传输系统，包括远程通信网（telecom）、有线电视网（cable TV）、无线通信网（wireless）等。


    正确

  • 第4题：

    TestKing has five regional offices that are located in different cities. The IT staff is evaluating WAN technologies to interconnect the regional offices to corporate headquarters. Each of the regional offices should be connected to the corporate headquarters in a hub and spoke arrangement using a packet-switched technology.Which of the following WAN technologies will fulfill these requirements?（）

    A. Frame Relay

    B. ISDN

    C. T1 leased lines

    D. Wireless


    参考答案：A

  • 第5题：

    In?project?net work?diagram,the?number?of?critical?path?is（）。

    A.none
    B.only?one
    C.only?two
    D.one?or?more

    答案：D
    解析：
    本题翻译：在项目网络工作图中，关键路径的数目是（）。
    A.没有B.只有一个C.只有两个D.一个或更多
    本题考查的是进度管理中的关键路径，正确选项为D一个或更多。
    在一个网络图中关键路径有一条或多条，关键路径是项目中时间最长的活动顺序，决定着可能的项目最短工期。

  • 第6题：

    21、网络层是电子商务的硬件基础设施，是信息传输系统，包括远程通信网（telecom）、有线电视网（cable TV）、无线通信网（wireless）等。


    远程通信网;有线电视网;无线通信网

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