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为进一步强化公司安全生产、文明施工管理,切实落实安全生产责任,防止重大安全事故发生,保障企业和员工的生命和财产安全manufacturersdrawingsboltfastenedinthecylinderandoutercylinder.Cylindercylinderinthedrainpipeinstallationandmeasuringcomponentleads.6.4.4.3bladecarrier,partitionsandlowerinstallationcheckthesealingringofthesealandsprings,whichshallconformtothetechnicalrequirementsmanufacturersdrawings.CylindergasketonthemountingbracketssupportingtheGroupassembled,thelugsshallbenoBurronthesurface,andotherdebris.Departmentsuiteinplacetomeasuresurfaceandinnercylindersurfaceheightdifference,comparedwiththeoriginalvaluesconfirmthelocation.6.4.4.4lowerbearingandthrustbearinginstallationcleanbearingandbearing,thrustbearingjoints,cleanthemwithathinlayerofturbineoil,andthenliftingittobits.6.4.4.5highandmiddlepressurecylinderoverittotheend(forhighpressurerotorandlowpressurechangeflangegasketwithoutconnectionunit)rotorsandrotorflangegasketconnectionandthereisnoconnection,sotherotorinplacecases,rotorsinplacemustbehighandmiddlepressurecylindertogetherwiththeChamberoverittotheend.Jackintheboxthatareinstalledonapush-pulldeviceofadjustingthehighandmediumpressurecylindertoendoverandaroundtosetupindicatorstomonitordata,generaldataaboutthedifferencemustnotexceed0.02mm.Topreventcylinderaboutoutofsyncoverthesituation,takethefollowingmeasures:a)overJackusesthesamepump,evenly.B)lefttosetupindicatorstomonitoroverquantity.TopreventthemovementovertheChamberwhentheplaten,atthetopofthefrontbearingplateinstalledtight,thenanchorbasenexttothecorresponding第1章计算机网络的基本概念一.填空(1)按照覆盖的地理范围,计算机网络可以分为______、______和______。【答案】:局域网、城域网、广域网(2)ISO/OSI参考模型将网络分为______层、______层、______层、______层、______层、______层和______层。【答案】:物理、数据链路、网络、传输、会话、表示、应用(3)建立计算机网络的主要目的是:________。【答案】:资源共享和在线通信二.单项选择(1)在TCP/IP体系结构中,与OSI参考模型的网络层对应的是:a)主机—网络层b)互联层c)传输层d)应用层【答案】:b(2)在OSI参考模型中,保证端-端的可靠性是在哪个层次上完成的?a)数据链路层b)网络层c)传输层d)会话层【答案】:c三.问答题计算机网络为什么采用层次化的体系结构?【要点提示】采用层次化体系结构的目的是将计算机网络这个庞大的、复杂的问题划分成若干较小的、简单的问题。通过“分而治之”,解决这些较小的、简单的问题,从而解决计算机网络这个大问题(可以举例加以说明)。第2章局域网的基本知识一.填空(1)最基本的网络拓扑结构有三种,他们是________、________和________。【答案】:总线型、环形、星形(2)以太网使用________介质访问控制方法,而FDDI则使用________介质访问控制方法。【答案】:CSMA/CD、令牌环二.单项选择(1)MAC地址通常存储在计算机的a)内存中b)网卡上c)硬盘上d)高速缓冲区【答案】:b(2)在以太网中,冲突a)是由于介质访问控制方法的错误使用造成的为进一步强化公司安全生产、文明施工管理,切实落实安全生产责任,防止重大安全事故发生,保障企业和员工的生命和财产安全manufacturersdrawingsboltfastenedinthecylinderandoutercylinder.Cylindercylinderinthedrainpipeinstallationandmeasuringcomponentleads.6.4.4.3bladecarrier,partitionsandlowerinstallationcheckthesealingringofthesealandsprings,whichshallconformtothetechnicalrequirementsmanufacturersdrawings.CylindergasketonthemountingbracketssupportingtheGroupassembled,thelugsshallbenoBurronthesurface,andotherdebris.Departmentsuiteinplacetomeasuresurfaceandinnercylindersurfaceheightdifference,comparedwiththeoriginalvaluesconfirmthelocation.6.4.4.4lowerbearingandthrustbearinginstallationcleanbearingandbearing,thrustbearingjoints,cleanthemwithathinlayerofturbineoil,andthenliftingittobits.6.4.4.5highandmiddlepressurecylinderoverittotheend(forhighpressurerotorandlowpressurechangeflangegasketwithoutconnectionunit)rotorsandrotorflangegasketconnectionandthereisnoconnection,sotherotorinplacecases,rotorsinplacemustbehighandmiddlepressurecylindertogetherwiththeChamberoverittotheend.Jackintheboxthatareinstalledonapush-pulldeviceofadjustingthehighandmediumpressurecylindertoendoverandaroundtosetupindicatorstomonitordata,generaldataaboutthedifferencemustnotexceed0.02mm.Topreventcylinderaboutoutofsyncoverthesituation,takethefollowingmeasures:a)overJackusesthesamepump,evenly.B)lefttosetupindicatorstomonitoroverquantity.TopreventthemovementovertheChamberwhentheplaten,atthetopofthefrontbearingplateinstalledtight,thenanchorbasenexttothecorresponding3-2b)是由于网络管理员的失误造成的c)是一种正常现象d)是一种不正常现象【答案】:c(3)下面关于以太网的描述哪个是正确的?a)数据是以广播方式发送的b)所有节点可以同时发送和接收数据c)两个节点相互通信时,第三个节点不检测总线上的信号d)网络中有一个控制中心,用于控制所有节点的发送和接收【答案】:a三.问答题请简述以太网和FDDI网的工作原理和数据传输过程。【要点提示】应主要阐述CSMA/CD和令牌环介质访问控制方法的工作原理,可以举例加以说明。第3章以太网组网技术一.填空(1)在将计算机与10BASE-T集线器进行连接时,UTP电缆的长度不能大于________米。在将计算机与100BASE-TX集线器进行连接时,UTP电缆的长度不能大于________米。【答案】:100、100(2)非屏蔽双绞线由________对导线组成,10BASE-T用其中的________对进行数据传输,100BASE-TX用其中的________对进行数据传输。【答案】:4、2、2二.单项选择(1)在以太网中,集线器的级联a)必须使用直通UTP电缆b)必须使用交叉UTP电缆c)必须使用同一种速率的集线器d)可以使用不同速率的集线器【答案】:c(2)下列哪种说法是正确的?a)集线器可以对接收到的信号进行放大b)集线器具有信息过滤功能c)集线器具有路径检测功能d)集线器具有交换功能【答案】:a三.实践题为进一步强化公司安全生产、文明施工管理,切实落实安全生产责任,防止重大安全事故发生,保障企业和员工的生命和财产安全manufacturersdrawingsboltfastenedinthecylinderandoutercylinder.Cylindercylinderinthedrainpipeinstallationandmeasuringcomponentleads.6.4.4.3bladecarrier,partitionsandlowerinstallationcheckthesealingringofthesealandsprings,whichshallconformtothetechnicalrequirementsmanufacturersdrawings.CylindergasketonthemountingbracketssupportingtheGroupassembled,thelugsshallbenoBurronthesurface,andotherdebris.Departmentsuiteinplacetomeasuresurfaceandinnercylindersurfaceheightdifference,comparedwiththeoriginalvaluesconfirmthelocation.6.4.4.4lowerbearingandthrustbearinginstallationcleanbearingandbearing,thrustbearingjoints,cleanthemwithathinlayerofturbineoil,andthenliftingittobi
本文标题:网络练习题参考答案
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