首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、It is like the biological virus in certain degree. B、It works the same way as the human virus. C、It influences the human as th
A、It is like the biological virus in certain degree. B、It works the same way as the human virus. C、It influences the human as th
admin
2013-09-09
64
问题
The computer virus is an outcome of the computer fast growth in the 1980s.(22)The cause of the term "computer virus" is the likeness between the biological virus and the evil program infected with computer.
The origin of this term came from an American science fiction written by Thomas Ryan, published in 1977. Human viruses invade a living cell and turn it into a factory for producing viruses. However, computer virus are small programs.(23)They expand by attaching a copy of themselves to another program.
Once attached to the host Program, the viruses then look for other programs to "infect" . In this way, the virus can spread quickly throughout a hard disk or an entire organization when it infects a LAN or a multi-user system. The timing of the attack can be linked to a number of situations, including a certain time or date, the presence of a particular file, the security level of the user, and the number of times a file is used. Likewise, the mode of attack varies.(24)So-called benign viruses might simply display a message, like the one that infected IBM’s main computer system last Christmas with a season’s greeting.(25)Bad viruses are designed to damage the system. The attack is to wipe out data, to delete flies, or to format the hard disk.
选项
A、It is like the biological virus in certain degree.
B、It works the same way as the human virus.
C、It influences the human as the biological viruses do.
D、It spreads to people who use the infected computers.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/Wp07777K
0
大学英语四级
相关试题推荐
CartoonsinAmericaThenewfamilymovie"IceAge:TheMeltdown"iswrittenforlaughs.Butsomepeoplemightalsoseeitas
Todayscientistsknowsomethingaboutthecausesofearthquakes.Seismologistscanmeasurethesizeofseawaves.
Thegrizzled,tough-lookingcartooncharacterwarnedAmericansnottochangetheirfoodhabits.Accordingtothepassage,Ameri
A、Becauseshehasgotanappointment.B、Becauseshehastogotoschool.C、Becauseshehastowork.D、Becauseshewantstoeati
Theyboughtthelandwitha______tobuildanewofficeblock.
A、Watersupplyandincreasingpopulation.B、Waterusemanagementandagriculture.C、Waterredistributionandwildlifeprotection
A、Thewomanwillarriveatthestationintenminutes.B、Thewomanhasfifteenminutestogettothestation.C、Themanthinksh
A、InSeptember.B、InJuly.C、InAugust.D、InJune.DM:JohnCarroll’snewarticleiscomingoutinJune.W:Wewon’tbeableto
Itisquitecommonforacompanytorecruitnewemployees.Whenacompanyseekstofillavacantjob,itmayadvertisethe【C1】__
Choosingwhattodoinlifeisoneofthehardestdecisionsthatapersonhastomake.Somepeoplechoosetooearlyand【B1】_____
随机试题
安装文件系统的命令是_______。
皮肤明显干燥、弹性差见于
下列对项目建设总进度计划的作用叙述正确的有( )。
抓铲挖土机适用于开挖的土方是下列的()。
下列各项中符合现行教育费附加和地方教育附加规定的有()。
西安市的星海公司于2005年4月将其拥有的深圳市的一处办公用房卖给青岛市的华星公司,该办公用房的销售合同在烟台市签订,并已经预收了部分房款,则星海公司出售该办公用房申报营业税的地点为()。
已知小写字母a的ASCII码为97,大写字母A的ASCII码为65,以下程序的结果是______。main(){unsignedinta=32,b=66;printf("%c\n",a|b);}
InpartsofBrazil’spoornortheast,snakesandparrotsareonsalebytheroadsideforafewreais.InBrazil,aselsewherein
【B1】【B8】
JustasRomangladiatorsdrankthebloodoffoestogainstrength,modemOlympianshaveinfusedthebloodoftheirowntogaine
最新回复
(
0
)