首页
登录
职称英语
[originaltext] The computer virus is an outcome of the computer fast growth
[originaltext] The computer virus is an outcome of the computer fast growth
游客
2023-07-10
71
管理
问题
The computer virus is an outcome of the computer fast growth in the 1980s.(22)The cause of the term "computer virus" is the likeness between the biological virus and the evil program infected with computer.
The origin of this term came from an American science fiction written by Thomas Ryan, published in 1977. Human viruses invade a living cell and turn it into a factory for producing viruses. However, computer virus are small programs.(23)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 multi-user 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.(24)So-called benign viruses might simply display a message, like the one that infected IBM’s main computer system last Christmas with a season’s greeting.(25)Bad viruses are designed to damage the system. The attack is to wipe out data, to delete flies, or to format the hard disk.
选项
A、They invade the computer and make it a place for producing viruses.
B、They spread throughout the whole system by 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:http://tihaiku.com/zcyy/2824179.html
相关试题推荐
[originaltext]Weatherscientistscallhurricanesbynamestomakeclearwhi
[originaltext]Weatherscientistscallhurricanesbynamestomakeclearwhi
[originaltext]Einsteinhadagreateffectonscienceandhistory.AnAmeric
[originaltext]W:Hello.Thisistheemergency911operator.M:Help.Help.Plea
[originaltext]W:Hello.Thisistheemergency911operator.M:Help.Help.Plea
[originaltext]W:Hello.Thisistheemergency911operator.M:Help.Help.Plea
[originaltext]Tengraduatestudentswhohaveservedasteachingassistants
[originaltext]Tengraduatestudentswhohaveservedasteachingassistants
[originaltext]M:WouldyoulikeacopyofprofessorHenry’sarticle?W:Thanks,
[originaltext]M:WouldyoulikeacopyofprofessorHenry’sarticle?W:Thanks,
随机试题
To:LeonardEllisFrom:DonnaHayesDate:February9Subject:EgyptianOdyssey
Whenwilltherescueresume?[originaltext]RescueworkersillFrancesayane
CivilservantisnowthehottestwordinChina,andthousandsofpeopleare
装饰放线时,我们通常使用规格为()m卷尺。A.2 B.3 C.15 D.
下列有关物质转运的叙述,此项符合题干要求的是().A.一种氨基酸只能有一种RN
《变电评价管理规定第55分册辅助设施检修策略》:火灾报警控制器无法与门禁等辅助设
下表为2008年我国对日本、俄罗斯两国的出口、进口额(单位:亿美元)及其增长速度
2018年,全国卫生人员总数达1230.0万人,比上年增加55.1万人。从
为全面客观地掌握贫困对象的经济状况,精准确定扶贫对象,某地基层单位成立了6个扶贫
(2016年真题)在工作分析的结果形成阶段,工作分析人员要将获得的信息送交审查确
最新回复
(
0
)