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
2015-08-14
10
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 can cause no damages at all.
B、It can cause damages to the computer systems.
C、It can copy your files in computers.
D、It can format your hard drive.
答案
B
解析
转载请注明原文地址:https://jikaoti.com/ti/qFWsFFFM
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
What’stheman’sfirstreactiontowhatthewomandescribes?
TheGovernmenthasalmostdoubleditsspendingoncomputereducationinschools.Mr.WilliamShelton,juniorEducationMinister,
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
Thepotentialofcomputersforincreasingthecontroloforganizationsorsocietyovertheirmembersandforinvadingtheprivac
Thepotentialofcomputersforincreasingthecontroloforganizationsorsocietyovertheirmembersandforinvadingtheprivac
Thepotentialofcomputersforincreasingthecontroloforganizationsorsocietyovertheirmembersandforinvadingtheprivac
Whatwillthemandotonight?
Whatwillthemandotonight?
随机试题
孕激素的主要生理作用是保证受精卵的着床和维持妊娠。()
A.腺淋巴瘤B.阻塞性腮腺炎C.舍格伦综合征D.结核E.儿童复发性腮腺炎符合下列腮腺造影表现的病变是主导管扩张,边缘不整齐呈羽毛状,末梢导管弥漫,散在的点状扩张
多根牙的牙周膜附着面积最大的部位是
患者女性,35岁。干咳无痰,咽干鼻燥,伴恶寒发热、头痛无汗,苔薄白而干,宜选用
甲将房屋两间出租给乙,租期至1997年12月止。1994年3月甲将此两间房屋卖给丙。下列表述中正确的是()。
甲欠丙10000元到期无力偿还,乙替甲还款,并对甲说:“这10000元就算给你了。”甲称将来一定奉还。事后甲还了乙5000元。后二人交恶,乙要求甲偿还余款5000元,甲则以乙已送自己10000元为由要求乙退回5000元。下列哪种说法是正确的?
城市长条形自行车停车场宜分成15~20m长的段,每段应设一个出入口,其宽度为:[2004年第59题]
影响建设工程投资的是( )阶段。
根据《会计法》的规定,下列行为中,属于违法会计行为的有()。
侦查机关可以对()的人身进行检查。
最新回复
(
0
)