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 can cause no damages at all. B、It can cause damages to the computer systems. C、It can copy your files in computers. D、It ca
A、It can cause no damages at all. B、It can cause damages to the computer systems. C、It can copy your files in computers. D、It ca
admin
2016-06-19
33
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 mes-sage, 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、It can cause no damages at all.
B、It can cause damages to the computer systems.
C、It can copy your files in computers.
D、It can format your hard drive.
答案
B
解析
细节题。文章在最后提到恶性病毒能够破坏电脑系统。
转载请注明原文地址:https://kaotiyun.com/show/2bY7777K
0
大学英语四级
相关试题推荐
Papermoneyisusedeverydaybutpeopledonotoftenthinkofmoneyasjustpaper.Thisisbecausepeopleagreethatithasval
WhenRobertoFelizcametotheUSAfromtheDominicanRepublic,heknewonlyafewwordsofEnglish.Educationsoonbecameanig
Manyoftoday’scollegestudentsaresufferingfromaformofshock.Lisaisagoodexampleofastudentinshock.Sheisanatt
SmallSchoolsRisingA)Thisyear’slistofthetop100highschoolsshowsthattoday,thosewithfewerstudentsareflourishing.
Thesedays,manylargecitybuildingsareequippedwiththeirownair-conditioningsystems.Thesesystemshelpkeepthebuilding
BankingonSpermA)Itcametohiminadream.OleSchouwasayoungDanishbusinessstudentwhenheawokeonemorningtwodecade
Weoftenpassonlittlebitsofinformationtoourchildren,notknowingiftheyaretrue,andonlybecausetheywere【B1】_______
A、Sayinggoodbyetoafriend.B、Buyingaticketforasportsevent.C、Payingabillatthebank.D、Payingaplanetrip.D女士说要帮男士
A、Plantsometreesoncampus.B、Organizeapicnic.C、Buildaparkinglot.D、Protectthenaturalbeautyoncampus.D
CigaretteLabels,WillTheyWork?A)TheFoodandDrugAdministration(FDA)—whichhaschosennineimagestobeplacedprominen
随机试题
下列物质中,既能与盐酸反应,又能与NaOH溶液反应的是()。
下列各项中,需要进行全面清查的是()
由股票的上涨家数和下降家数的比值,推断股票市场多空双方力量的对比,进而判断出股票市场的实际情况的是()
TheUnitedStates【56】alargepartoftheNorthAmericancontinent.ItsneighborsareCanada【57】thenorth,【58】Mexicotothesout
饮用水深度净化的目的是
一、背景某机电安装公司承担北方某城市小区供热管网工程施工,开工前,项目经理进行了全面的质量策划,并指令专业工程师编制质量控制程序。工程按期完工,由于建设单位配套设施尚不具备条件,虽已到供暖期,没能进行试运。由于寒潮突然袭击,使当地气温骤降,随后检
证券交易所总经理由理事会任免。()
在物业发生转让和继承后,新入住的继受人()作出承诺,业主公约即对其产生效力。
杜某死亡时,遗产由其母陈某、其妻李某和两个孩子杜甲、杜乙继承,当时李某已怀有身孕,为胎儿保留继承份额3万元。胎儿出生后1天后不幸夭折,这3万元应如何处理?()
一般来说,1岁的婴儿处在言语发展的()。
最新回复
(
0
)