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
How did the name of "computer virus" come into being?
How did the name of "computer virus" come into being?
admin
2019-01-10
65
问题
How did the name of "computer virus" come into being?
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-\ 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 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. 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. There are several kinds of anti-virus software providing the services for prevent the virus from attacking your computer. So you should install the anti-virus software before your access to the Internet. It will be no use to install the software after you’ ve got infected.
选项
A、It is a virus that causes great damage.
B、It is a virus that once infected the IBM’ s computer system.
C、It is a virus that carries a Christmas greeting.
D、It is a virus that causes no harm to the computer systems.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/MsNd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Towhatstudentbodyofficedoesthemanwanttobeelected’?
What’stheman’sfirstreactiontowhatthewomandescribe?
What’stheman’sfirstreactiontowhatthewomandescribe?
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwithagun,butthemanwiththeportablecomputerinbus
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
Whatwillthemandotonight?
Whatwillthemandotonight?
Whatwillthemandotonight?
随机试题
A.仰卧位B.侧卧位C.俯卧位D.仰靠坐位E.俯伏坐位
茧唇主要的转移途径是乳岩主要的转移途径是
依据市区和近郊区非农业人口数量来划分城市规模,下列哪组数据是正确的?[2005年第80题][2006年第77题]
对监理工程师再教育的方式有()。
关于增值税的计税依据,下列说法正确的有()。
根据《汽车贷款管理办法》规定,汽车贷款利率按照()、结息办法由()。
①随着人口增加,土地兼并日益严重,盲目的滥垦导致了对生态环境的破坏,而且吏治的腐败一直存在,影响着水工功效的发挥,到清后期灾害又频繁起来②它对人类社会的影响既取决于自然系统的变异程度,又取决于人类社会对自然变异的综合承受能力③清初由于灾害频繁发生,政府
领导者在借助“外脑”时应防止什么问题?
法系是具有共性或共同历史传统的法律的总称,划分法系的考量依据有
Thetrafficpolicetoldthesurroundingpeoplethatthetruckdriver__________(对这起严重的交通事故负责任).
最新回复
(
0
)