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
67
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
Thepotentialofcomputersforincreasingthecontroloforganizationsorsocietyovertheirmembersandforinvadingtheprivac
What’stheman’sfirstreactiontowhatthewomandescribe?
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwithagun,butthemanwiththeportablecomputerinbus
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwithagun,butthemanwiththeportablecomputerinbus
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
Whatwillthemandotonight?
Whatwillthemandotonight?
Whatwillthemandotonight?
随机试题
如图标志的含义是什么?
易燃液体一旦发生火灾,要及时用水扑救。
A.四肢痉挛性瘫痪B.上肢下运动神经元瘫痪,下肢上运动神经元瘫痪C.双下肢上运动神经元瘫痪D.双下肢下运动神经元瘫痪E.马鞍状感觉障碍及二便困难高颈髓受累可见
A.碳酸钙B.焦磷酸钙C.二氧化硅D.不溶性偏磷酸钙E.焦磷酸钙和二氧化硅与氟化钠牙膏相容的摩擦剂是
下列属于知母的功效是
已知图4-22所示结构中的q,L,则固定端B处约束力的值为(设力偶逆时针转向为正)()。
锅炉中的阀门进行强度试验时,其压力应为公称压力的( )。
“备案号”栏:()。“随附单据”栏:()。
对“循环经济”解说有误的一项是()。根据原文所给的信息,下列推断有误的一项是()。
向老同学刘亮发一个E—mail,并将考生文件夹下的图片文件fengjing.JPg作为附件一起发出。具体要求如下:【收件人]Liuliang@163.corn【主题】美丽的风景【内容】刘亮,你好!最近我出去旅游,把当地的一张风景照寄给你,
最新回复
(
0
)