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
35
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
Disappointment,asuncomfortableandevenpainfulasitcanbeforus,isessentialandimportantonourjourneyofgrowth.Maki
Lessthan60%ofstudentsnowenteringfour-yearAmericancollegesarelikelytograduate.The【B1】______rateislowerthanfora
Lessthan60%ofstudentsnowenteringfour-yearAmericancollegesarelikelytograduate.The【B1】______rateislowerthanfora
A、Goandseeadoctor.B、Stopsmokingatonce.C、Takesomemedicine.D、Reducetheamountofsmoking.D
A、Sheisthirstyforpromotion.B、Shewantsamuchhighersalary.C、Sheistiredofherpresentwork.D、Shewantstosavetravel
A、Tostresstheroleofdirt.B、Tointroducethehistoryofdirt.C、Tocallattentiontothedangerofdirt.D、Topresentthech
Mostofuswouldshyawayfrommakingpurchasesinaforeigncountryifwedidn’tknowtheexchangerate.Yet,ifprivacyisthe
A、Thewomanislikelytodoapart-timejobtogetsomemoney.B、Themanisgoingtooffersomemoneytothewoman.C、Thewoman
A、Hehasmadealotofmoney.B、Hehaspromisedhissontobuyanewoneforhim.C、Itisalongdistancefromhishometothew
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,however,perfect.Driversexchangethegridlockthat
随机试题
体育教学过程是一个多目标、多层次、多形式的过程,其最显著特点除身体直接参与外,还有()。
计算机是由硬件和()两部分组成。
Onlyunderspecialcircumstances______totakemake-uptests.
读经纬网图和某地等高线地形图,回答问题。玲玲家的经纬度是___________。
用人情做出来的朋友只是暂时的,用人格吸引来的朋友才是_______的。所以,丰富自己比取悦他人更有力量。大多时候,我们的忙碌其实是_______的。我们把自己累得气喘吁吁,最终却无功而返。与其追逐远方,不如做好脚下的事。填入画横线部分最恰当的一项是:
A、 B、 C、 D、 D
[*]
子公司
Manyteachersbelievethattheresponsibilitiesforlearningliewiththestudent.【C1】______alongreadingassignmentisgiven,
Psychologiststellusthattherearefourbasicstagesthathumanbeingspassthroughwhentheyenterandliveinanewculture.
最新回复
(
0
)