YourCompanyupgradesitsnetworkto100Mbps.Youremovetheoldnetworkadapterandinstallanew10/100MbpsnetworkadapterintoaWindows2000Professionalcomputer.YouconfiguretheTCP/IPprotocolsettingstobethesameastheywereforthepreviouslyinstallednetworkadapter.
MCS－51串行口能实现多机通信的工作方式有（).
YouadministerCompany‘snetworkthatconsistsof20Windows2000Professionalcomputersconfiguredwithdefaultnetworkingsettings.CompanycannotforthemomentaffordapermanentInternetconnectionforthenetworksoyoudohaveasingledial-upaccounttoalocalInternetServiceProvider(ISP).AclientcomputernamedCompany1hasa56-Kbpsmodeminstalled.Youconfigureadial-upconnectiontotheISPonCompany1.YouwantallofthecomputerstobeabletoaccesstheInternetwhenWebresourcesarerequested.Whatshouldyoudo？（）
施工现场停止作业（)小时以上时，动力开关箱应上锁。
NB－IoT工作在（)模式下是最省电的？
