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
2016-06-24
29
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 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/anVd777K
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
TheGovernmenthasalmostdoubleditsspendingoncomputereducationinschools.Mr.WilliamShelton,juniorEducationMinister,
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
Belowisagraphshowingtheaveragenumberofhoursastudentspendsonthecomputerperweek.Lookatthegraphandwriteane
Whatwillthemandotonight?
Whatwillthemandotonight?
随机试题
某总体含有n个个体,现测得n个个体某定量指标的数值,即可求得总体均数值与总体标准差,计算总体标准差时,其自由度应该是
婴儿腹泻的饮食治疗,下述哪项不正确
A、足太阳膀胱经B、足阳明胃经C、足少阳胆经D、手少阳三焦经E、手太阳小肠经至目外眦,转入耳中的经脉是
假设人民法院于2007年9月10日受理某企业法人破产案件,12月10日作出破产宣告裁定。在破产企业清算时,下列选项中,管理人可依法行使撤销权的有();
()自安全生产标准化技术委员会或其他标委会收到新工作项目建议提案起,到新工作项目建议上报国务院止。
某市甲企业2014年年初占地面积为30000平方米;生产用房原值共计1000万元,账面已计提折旧100万元;拥有小汽车5辆,2014年有关资料如下:(1)原值为200万元的B厂房自本年年初因房屋大修导致连续停用5个月,6月恢复使用。(2
学生王明因不守纪律,又一次被带进办公室,当即受到班主任的训斥:“你又违反纪律了?我跟你说了多少次?你的脸皮实在太厚!你把你爸妈请来,当面说清楚,你到底准备怎么办?不然,从明天起,你就不要来上学了。”学生低着头离开了办公室。分析上面的例子,你认为要使王明同学
春秋时期,反对公布成文法的是()
下面正确使用动态数组的是
除了显式定义的构造函数外,类中还有可能包含编译器自动生成的构造函数,因此一个类所拥有的构造函数的至少有
最新回复
(
0
)