The Internet is an open system, and most information is available to everyone. It is very important to add ______ to existing system for protecting the secret information.A．web pagesB．modemC．securityD．NetworkA．B．C．D．
The Internet is an open system, and most information is available to everyone. It is very important to add ______ to existing system for protecting the secret information.
A．web pages
B．modem
C．security
D．Network
A．
B．
C．
D．
相关考题：
Which of the following words has gone through the semantic change of subjectification? A.cornB.gossipC.maidD.very
DOS的英文表示是()。 A、Disk、Operating、SystemB、Daily、Operating、SystemC、Disk、Open、SystemD、Date、Open、System
这个c＋＋程序中char city[20]; 的作用是什么 ? #includefstream#includeiostreamusingnamespacestd;intmain(){fstreaminout;inout.open("city.txt",ios::out);inout"Dallas""""tonghua""""长春""";inout.close();inout.open("city.txt",ios::app|ios::out);inout"罗马""""巴黎""";inout.close();charcity[20];inout.open("city.txt",ios::in);while(!inout.eof()){inoutcity;coutcity"";}inout.close();system("PAUSE");return0;}
ToaddaTTYTerminaltoSerialport1,whichofthefollowingsetofoptionsshouldbechosen?() A.ttyrs232AsynchronousTerminalthensa1Available01-S2StandardI/OSerialPortB.ttyrs422AsynchronousTerminalthensa1Available01-S2StandardI/OSerialPortC.ttyrs232AsynchronousTerminalthensa0Available01-S1StandardI/OSerialPortD.ttyrs422AsynchronousTerminalthensa0Available01-S1StandardI/OSerialPort
YouhaveaDNSserverthatrunsWindowsServer2003ServicePack2(SP2).YouenableDNSdebugloggingbyusingthedefaultsettings.Youcreateaprimaryzonenamedcontoso.com.YouneedtoviewalltheDNSresponsesthattheDNSserverhassent.Whatshouldyoudo?（）A.FromEventViewer,opentheapplicationlog.B.FromEventViewer,opentheDNSserverlog.C.Open%systemroot%\system32\dns\dns.log.D.Open%systemroot%\system32\dns\contoso.com.dns.
Which of the following statements is NOT considered a characteristic of farming in the late 18th and early 19th centuries?（）AUse of artificial fertilizer.BIntroduction of new agricultural machinery.CThe'Open-field'system.DA system of crop rotation.
18、在Google搜索引擎中，检索“Information-System-Management”表示的意思是：A．表示专业术语检索，此时的ISM三个大写字母被视为必须大写B．表示词组检索C．-表示AND，就是三个词语必须都出现D．-表示NOT，表示只能有Information，去掉System和Management
2、Internet 信息服务日志存放位置？A．%systemroot%\system32\logfiles\msftpsvc1\B．%systemroot%\system32\logfiles\w3svc1\C．%systemroot%\system32\config\SecEvent.EVTD．%systemroot%\system32\config\AppEvent.EVT