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 resembles the biological virus. B、It works the same way as the human virus. C、It influences the human as the biological vir
A、It resembles the biological virus. B、It works the same way as the human virus. C、It influences the human as the biological vir
admin
2015-02-09
39
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、It resembles the biological virus.
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/PKq7777K
0
大学英语四级
相关试题推荐
Therewasatimewhenanypersonalinformationthatwasgatheredaboutuswastypedonapieceofpaperand【B1】______inafilec
Academicqualifications’valueintheworkplaceisabigissueforstudents,policymakersandtaxpayers,especiallyastherisin
Forthispart,youareallowed30minutestowriteashortessayentitledPowerSupplyAllNightfollowingtheoutlinegivenbel
ThefloodofwomenintothejobmarketboostedeconomicgrowthandchangedU.S.societyinmanyways.Manyin-homejobsthatuse
Forthispart,youareallowed30minutestowriteashortessayentitledThePopularityofMicroblog.Youshouldwriteatleast
A、Attheairport.B、Inarestaurant.C、Inabookingoffice.D、Atthehotelreception.D女士说她没有找到男士的预订记录,男士解释说秘书称已经给他订好了房间,他在早上上飞机
A、HehastaughtSpanishforacoupleofyearsatalocalschool.B、HeworkedattheBrownstoneCompanyforseveralyears.C、Heo
A、Theapartmentisfarfromthecampus.B、Thetrafficisnotconvenient.C、Theapartmentislocatedinthecenterofthecity.D
A、Sendflowerstosomeoneinhospital.B、Deliverapackagetothehospital.C、Arrangesomeflowers.D、Talktoadoctor.A对话中男士说他
A、Becausetheywilldopart-timejobsduringtheweekend.B、Becausetheywilltakemorecoursesinanotherfield.C、Becausethey
随机试题
汽车发电机用来产生三相交流电的是()。
患者,女,27岁。3天前受凉后出现左侧面部板滞,额纹消失,眼裂变大,露睛流泪,鼻唇沟变浅,口角歪向右侧,舌淡,苔薄白,脉浮紧。其针灸治疗时,除主穴外,还应选用
女性,65岁。冠心病心绞痛史8年,无高血压史,夜间突发心前区疼痛8小时入院,入院时血压为150/90mmHg(20/12kPa),经心电图检查,诊断急性前壁心肌梗死第2日患者血压70/50mmHg,出冷汗、面色苍白,窦性心律,HR126次/分,双肺
理中丸主治不包括
我国某商业银行在某发达国家新设了一家分行,获准开办所有的金融业务。该发达国家有发达的金融市场,能够进行传统的交易和现代金融衍生产品交易。根据以上资料,回答下列问题:该分行为了通过风险转移来管理操作风险,可以采取的机制和手段是()。
资金成本是包括利息在内的花费在吸收负债上的一切开支,即________和________两种成本的总和。
下图表示某水域生态系统的食物网,下列分析正确的是()。
Mr.Smithisa______.Whichfilmisputonearlierthantheother?
Youthisnotatimeoflife;itisastateofmind;itisnotamatterofrosycheeks,redlipsandsuppleknees;itisamatter
Tobe【B1】______inthejobinterview,youshould【B2】______certainpersonaland【B3】______qualities.Youneedtocreateagood
最新回复
(
0
)