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
40
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
A、Dressingpatternsofworkers.B、Man’sattitudetowardsdress.C、Theimportanceofclothing.D、Thestylesofclothing.C主旨大意题。短
A、Peopleshouldtakeinlessfatastheycan.B、Itisthereasonforpeople’sobesity.C、Itisuselessforpeople’shealth.D、It
A、Peopledeserveallthedisasters.B、Peopleshouldn’thavedeservedthedisasters.C、Peoplehavebeenreadyforthetornado.D、
Forthispart,youareallowed30minutestowriteashortessay.Youshouldstartyouressaywithabriefdescriptionofthepi
AuniquelaboratoryattheUniversityofChicagoisbusyonlyatnight.Itisadreamlaboratorywhereresearchersareatworks
Heredity(遗传)isnottheonlythingthatinfluencesourcolour.Whereandhowweliveafterwearebornisimportanttoo.Forinst
Heredity(遗传)isnottheonlythingthatinfluencesourcolour.Whereandhowweliveafterwearebornisimportanttoo.Forinst
A、BringhisIDcardtobuytheticket.B、GotoLosAngelesbytrain.C、Getaticketfromotherairlines.D、Buytheticketatthe
Lookingatthebasicbiologicalsystems,theworldisnotdoingverywell.Yeteconomicindicatorsshowtheworldis【B1】______.
随机试题
下列评论中其对象与玄言诗有关的是【】
PowerPoint使用模板可以为幻灯片设置统一的外观式样。()
阅读李白《行路难》(其一),然后回答。金樽清酒斗十千,玉盘珍羞直万钱。停杯投箸不能食,拔剑四顾心茫然。欲渡黄河冰塞川,将登太行雪满山。闲来垂钓碧溪上,忽复乘舟梦日边。行路难,行路难,多歧路,今安在?
商业银行开展代销证券投资基金属于商业银行的()。
下列各项中,不属于法律行为的有()。
合伙企业具有企业法人资格。()
在温泉堡这个村子的山峡中,每天清晨,似乎我都和这只松鼠有一个美丽的约会。其实只要站在这面坡地上细细观察,无论是在灌木丛中还是在低矮的橡树旁边,无论是在崖缝之间还是在茅草的掩映之下,都会发现一只又一只它的同伴。它们个个都非常机敏,跑起来十分迅捷。而我总是毫不
当前,从严治党的重中之重是()
设ab>0,f(x)在[a,b]上连续,在(a,b)内可导,证明:存在ε∈(a,b),使得
ADSL上行速率范围是
最新回复
(
0
)