计算机病毒主要破坏数据的什么1、美国第一台电子数字计算机诞生于_____. A．1936年 B．1946年 C．1952

由已知条件可得第一轮被传染的计算机数目为10台
所以第五轮被传染的数目为10*20*20*20*20=1600000台

楼上的都把答案回答出来了~我就来打打酱油、坐坐俯卧撑,随便大概的说下...下列关于计算机病毒的说法中,正确的是（A）A.计算机病毒通常是一段可运行的程序B.反病毒软件可清除所有病毒C.加装防病毒卡的微机不会感染病...

Abstract: the computer virus exists in our daily life, to people's production and living and entertainment activities has far-reaching influence. Based on computer virus as the research object, this paper will with the introduction of the computer virus is divided into the origin, characteristics, the present situation, the prevention and control of several aspects, such as research to collect materials through the network analysis of virus and computer security.
Key words: computer virus; A computer virus; Characteristics of computer virus; The present situation of the computer virus; A computer virus prevention and control; A computer virus crime
望采纳,祝心想事成
谢谢

c

Dear Jack,
How is everything going in England? I know it is hard for you to get accustomed to such a new environment,but I trust that you can make it bravely and successfully! I have been abroad before so would you like some suggestions from me?
First of all, we should befamiliar with the local customs and life, and we need respect their customs andtraditions. If you have anything confusing, you may speak up to your British friends,I believe they will help you understand.
Secondly, there should be plenty of American students whom you may turn to for help as well as communicate and go out with. Whynot?
Additionally, please try to do more outdoor activities. The more sports you do the healthier and happier you will become, trust me on that ! Andfinally, I suggest you pay attention to the manners while you make friends or communicate with the local. Just to do as the Romans do when in Rome.
Wish youhave a wonderful time in England!
Yours,
Lihua
请采纳答案,支持我一下.

A.反病毒软件可以查、杀任何种类的病毒x0dB.计算机病毒是一种被破坏了的程序x0dC.反病毒软件必须随着出现而升级,提高查、杀病毒的功能x0dD.感染过计算机病毒的计算机具有对该病毒的免疫性

B

the answer is B

可触发型：是指病毒在某些条件成熟的情况下（如：时间日期、用户运行了某个程序等等）可以自动触发,击活病毒.

A错,计算机病毒不是软件.
B错,计算机病毒具有潜伏性,容易在一些文件潜伏下来；
C对；
D错,现在的病毒多是认为的制作的,用来寄宿在我们的文件中,升级对它们无效.

我认为是真命题
这个是定义来源 《中华人民共和国计算机信息系统安全保护条例》
计算机病毒不是天然存在的，是某些人利用计算机软件和硬件所固有的脆弱性编制的一组指令集或程序代码。它能通过某种途径潜伏在计算机的存储介质（或程序）里，当达到某种条件时即被激活，通过修改其他程序的方法将自己的精确拷贝或者可能演化的形式放入其他程序中，从而感染其他程序，对计算机资源进行破坏。

ABD

Along with networking swift development, people to computer virus already no longer strange, has after specially experienced virus and so on CIH, great virus and shock-wave, causes computer's application to spread to society's each domain, the computer virus technique of manufacture also changes with each new day. The computer virus may seep to information society's each domain, has brought the huge destruction and the latent threat for the computer system, has disturbed people's normal life seriously. Computer virus' prevention is in the information security a very important aspect, to guarantee that information security and unimpeded, computer virus' guard and the handle work, were already imminent. This article obtains from computer virus' characteristic, discusses the computer virus initially the guard processing strategy, has analyzed computer virus' manifestation, analyzes the computer virus case, to the computer virus and network destructiveness, proposed the prevention essential method and the processing measure. key word network; Computer virus; Harm; Prevention; Processing method

老大..

7. (1分) 计算机病毒是(B) 人为编制的能进行自我复制的有破坏性的程序代码

既然是根本特征那么就一定是病毒所特有的,CD无须多说,必然是病毒的特征.那么看看AB吧.首先,具有触发特性的不一定是病毒,很多程序比如很多定时任务到了时间满足了触发条件一样可以运行,隐蔽性就更不要提了,计算机里具有隐蔽性的文件程序不要太多,最简单的就是系统文件,大多都是后台处理的用户根本不清楚它怎么运行的.所以AB不是病毒所特有的性质,只根据AB的话根本不能判断是病毒,在诸多属性中,只有传染及破坏才是病毒程序区别与一般程序的根本特征.

计算机病毒是由三个模块组成的：引导模块、传染模块、发作模块.
引导模块： 它将病毒程序从外存装入并驻留在内存,使传染模块、干扰或破坏模块处于激活状态.
传染模块： 当系统进行磁盘读写时,判断操作对象是否符合感染条件（包括是否己感染本病毒）,符合条件则将病毒程序传给对方.
发作模块：当病毒发作条件（干扰、破坏条件）满足时,向对象实施攻击.
后两个模块又有两个子程序段：条件判断子模块和实施子模块.首先判断是否符合条件才会触发传染或破坏.
你的问题中CD选项不正确可以用这句话解释：病毒在传染或发作时首先判断是否符合条件才会触发传染或破坏.

D 因为前三项是计算机主要特征,只有第四项不是,长期性是不可能的,只要计算机做好防病毒措施就不存在长期性的.

除了c其他都对
a计算机病毒是对计算机或者网络具有安全威胁的程序代码
b计算机病毒由算法组成，算法可以实现病毒的自我复制以及产生差异的变种
c计算机病毒中的某些特征代码可以在病毒未发作时被检测出，可以提前预判
d像千年虫病毒就是需要等待某个时间点才能够被触法

纯属手打，来自微派网

C报复性；病毒只是个恶意程序而已,谈何报复

B.计算机病毒具有破坏性,复制性和传染性.虽然,有些病毒可以是到特定时间特定状态下才发作,但潜伏性不应该是一般计算机病毒的特点.

选C破坏性
因为病毒的定义就是“编制或者在计算机程序中插入的破坏计算机功能或者破坏数据,影响计算机使用并且能够自我复制的一组计算机指令或者程序代码”
以上4个选项都是病毒的特性,但我觉得他的最本质应该从定义上来理解,也就是破坏性

c

D

明显是B B你没打完 不过也能看出来 计算机病毒是一段影响计算机的程序 反正带有程序的就对了.

最近好多奇怪问题

错误的是C.

C

病毒是不会损伤硬件的,病毒最多是破坏BIOS的软体,硬件本身没有损坏,中了这样的病毒一般重新刷新BIOS就可以解决,而不需要更换BIOS,所以再厉害的病毒都不会损伤硬件.
肯定选B

（1）破坏性：凡是由软件手段能触及到计算机资源的地方均可能受到计算机病毒的破坏.其表现：占用CPU时间和内存开销,从而造成进程堵塞；对数据或文件进行破坏；打乱屏幕的显示等.
（2）隐蔽性：病毒程序大多夹在正常程序之中,很难被发现.
（3）潜伏性：病毒侵入后,一般不立即活动,需要等一段时间,条件成熟后才作用.
（4）传染性：对于绝大多数计算机病毒来讲,传染是它的一个重要特性.它通过修改别的程序,并自身的拷贝包括进去,从而达到扩散的目的.

1.Computer viruses in the long-term
2.Of computer virus produced
3.The characteristics of computer virus
4.A computer virus classification
5.The computer virus complete working process
6.Computer virus prerequisite

This article analyzes the safety of the present computer and network.And it provides series of penetrating analysis into the safe problems of which the computers are facing,especially the computer virus and the relevant protective measures.The article also discusses how to strengthen the safety of personal computer,what we should do to improve the protection of the computer,how to improve the users' awareness of security,and the relevant measures which use to punish the network criminals.In those ways we can ensure the legality and safety of the Internet and make a safe operating system by external and inner efforts,thus we can protect our computers effectively.

每台计算机-一轮是20个,第一轮就有80太,那么 第一轮是4台计算机被感染,然后同时发作,感染80台-那么第二轮-80台同时发作-80*20=1600,第三轮-1600*20=32000 第四轮：32000*20=640000 第五轮 640000*20=12800000台计算机被感染 希望帮到你

B.
CIH病毒

analysis and prevention of computer virus

D

计算机程序

每轮感染中平均一台电脑会感染X台电脑,
根据题意得：
(1+X)^2=100
1+X=±10
X=9或X=-11(舍去)，
第三轮：
(1+9)^3=1000台，
不超过1000台。

A

Computer Virus
A computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the user. The original may modify the copies or the copies may modify themselves, as occurs in a metamorphic virus. A virus can only spread from one computer to another when its host is taken to the uninfected computer, for instance by a user sending it over a network or carrying it on a removable medium such as a floppy disk, CD, or USB drive. Additionally, viruses can spread to other computers by infecting files on a network file system or a file system that is accessed by another computer. Viruses are sometimes confused with computer worms and Trojan horses. A worm, however, can spread itself to other computers without needing to be transferred as part of a host. A Trojan horse is a file that appears harmless until executed. In contrast to viruses, Trojan horses do not insert their code into other computer files. Many personal computers are now connected to the Internet and to local-area networks, facilitating their spread. Today's viruses may also take advantage of network services such as the World Wide Web, e-mail, and file sharing systems to spread, blurring the line between viruses and worms. Furthermore, some sources use an alternative terminology in which a virus is any form of self-replicating malware.
The term comes from the term virus in biology. A computer virus reproduces by making (possibly modified) copies of itself in the computer's memory, storage, or over a network. This is similar to the way a biological virus works.
Some viruses are programmed to damage the computer by damaging programs, deleting files, or reformatting the hard disk. Others are not designed to do any damage, but simply replicate themselves and perhaps make their presence known by presenting text, video, or audio messages. Even these benign viruses can create problems for the computer user. They typically take up computer memory used by legitimate programs. As a result, they often cause erratic behavior and can result in system crashes. In addition, many viruses are bug-ridden, and these bugs may lead to system crashes and data loss.
There are many viruses operating in the general Internet today, and new ones are discovered every day.

D

D、显示优盘目录树

C

选B这个答案

那得看他的遗传物质是DNA还是RNA
如果是RNA的话,就很容易变异.如 流感病毒,HIV病毒
如果是DNA的话,就相对稳定了

D

B是错误的,太肯定了,有时候不一定杀毒之后就没有了,有可能杀毒不成功或者病毒库没有这种病毒.

1、对
2、不对
3、对

选择A 谢谢采纳