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、They invade the computer and make it a place for manufacturing. B、They spread throughout the whole system by quickly copying t
A、They invade the computer and make it a place for manufacturing. B、They spread throughout the whole system by quickly copying t
admin
2015-02-09
66
问题
The computer virus is an outcome of the computer overgrowth in the 1980s. The cause of the term "computer virus" is the likeness between the biological virus and the evil program infected with computers. The origin of this term came from an American science fiction "The Adolescence of P-l" written by Thomas J. Ryan, published in 1977. Human viruses invade a living cell and turn it into a factory for manufacturing viruses. However, computer viruses are small programs. 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 multiuser 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. So called "benign" or the harmless viruses might simply display a message, like the one that infected IBM’s main computer system last Christmas with a season’s greeting. Malignant or the harmful viruses are designed to damage the system. The attack is to wipe out data, to delete files, or to format the hard disk.
Questions 22 to 25 are based on the passage you have just heard.
22. How did the name of "computer virus" come into being?
23. What is the way that the computer viruses infect the computer system?
24. What is a "benign" virus?
25. What can a "malignant" virus do to your computer?
选项
A、They invade the computer and make it a place for manufacturing.
B、They spread throughout the whole system by quickly copying themselves.
C、They infect the hard disc and the whole system.
D、They spread viruses inside the computer system.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/WKq7777K
0
大学英语四级
相关试题推荐
PreparingforMoreExpensiveDegreesinEnglandA)Balancingatightbudgetisoneofthemostdifficultaspectsofbeingastude
PreparingforMoreExpensiveDegreesinEnglandA)Balancingatightbudgetisoneofthemostdifficultaspectsofbeingastude
Forthispart,youareallowed30minutestowriteashortessay.Youshouldstartyouressaywithabriefdescriptionofthepi
Acidrain,whichisaformofairpollution,currentlybecomesasubjectofgreatdebatebecauseofwidespreadenvironmentaldam
Becauseofsatellitelinkswhichnowenablebroadcastnewsorganizationstooriginateliveprogrammingfromanypartoftheglob
A、Amovie.B、Alecture.C、Aplay.D、Aspeech.C
Competitionamongsmartphonemakersisheatingupatretail,inadvertisingand,increasingly,inthecourtroomashandsetand
A、Heisworkinghardnowtoearnmoney.B、Heisgoingtodropoutofschoolforever.C、HeisJane’sbestfriendandtellsherev
Heredity(遗传)isnottheonlythingthatinfluencesourcolour.Whereandhowweliveafterwearebornisimportanttoo.Forinst
A、Hehasanotherclassat4:30.B、Hehastogoforapart-timejob.C、Heneedstimetoprepareforit.D、Hehastoattendameet
随机试题
高强螺栓施工中,摩擦面的处理方法有( )。
在“四个全面”战略布局中居于引领地位的是()
触诊腹水的病人腹腔内有无肿物,最好用()
SLE的治疗原则是什么?
患儿,男,6岁。突发咳喘哮鸣气促,喉间痰鸣,咳痰清稀色白,形寒无汗,面色青灰,张口抬肩。舌苔薄白或白腻,脉浮滑。治疗首选方剂是
在航空运输中,需要由承运人签发商务事故记录的情况有()
生产规模较大、业务较多的企业可以采用的账务处理程序有()账务处理程序。
最有利于儿童成长的依恋类型是()。
SomeofmyfondestmemoriesarewhenI’veputtogetheralargegroupoffriendsanddidnothingbut______.
A、Thereisstillhonesty.B、Thereisnohonesty.C、Honestyisnotimportant.D、Noneoftheabove.AWhatisthespeaker’sattitud
最新回复
(
0
)