首页
登录
职称英语
[originaltext] The computer virus is an outcome of the computer fast growth
[originaltext] The computer virus is an outcome of the computer fast growth
游客
2023-07-10
28
管理
问题
The computer virus is an outcome of the computer fast growth in the 1980s.(22)The cause of the term "computer virus" is the likeness between the biological virus and the evil program infected with computer.
The origin of this term came from an American science fiction written by Thomas Ryan, published in 1977. Human viruses invade a living cell and turn it into a factory for producing viruses. However, computer virus are small programs.(23)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.(24)So-called benign viruses might simply display a message, like the one that infected IBM’s main computer system last Christmas with a season’s greeting.(25)Bad viruses are designed to damage the system. The attack is to wipe out data, to delete flies, or to format the hard disk.
选项
A、It is a virus that causes great damage.
B、It is a virus that infects 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://tihaiku.com/zcyy/2824180.html
相关试题推荐
[originaltext]Peoplefromallculturesandethnicitiescanbefoundinever
[originaltext]Peoplefromallculturesandethnicitiescanbefoundinever
[originaltext]Peoplefromallculturesandethnicitiescanbefoundinever
[originaltext]Smokingisthemostimportantcauseofdiseaseanddeathint
[originaltext]W:Hello,Peter.Igreatlyregret-thatIcouldn’tgotoyourpar
[originaltext]W:Hello,Peter.Igreatlyregret-thatIcouldn’tgotoyourpar
[originaltext]W:Hello,Peter.Igreatlyregret-thatIcouldn’tgotoyourpar
[originaltext]W:Hello,Peter.Igreatlyregret-thatIcouldn’tgotoyourpar
[originaltext]Anelderlycarpenterwasreadytoretire.Hetoldhisemploye
[originaltext]Anelderlycarpenterwasreadytoretire.Hetoldhisemploye
随机试题
Entertheinformationage.Informationistherawmaterialformanyoftheb
设平面区域D由直线x=1,x=2,y=x与x轴所围,计算
B
防爆等级低的防爆通风机,叶轮和机壳的制作材料应为( )。A.叶轮和机壳均用钢板
孕激素治疗子宫内膜癌的机制是A.破坏癌细胞胞膜 B.使癌细胞DNA破裂 C.
男性。40岁,突发急性阑尾炎,急诊入院拟行急诊手术切除阑尾,术前准备时,护士不要
《难经经释》说:“邪扶生气而来,虽进而易退”,是指A母病及子 B子病犯母 C
应用收益现值法进行资产评估的前提条件,是资产所有者所承担的风险与被评估资产未来期
A.协同作用 B.促进机体的利用 C.作用不同的靶点 D.延缓或降低抗药性
具有防水、防腐蚀、隔爆、耐震动、直观、易读数、无汞害、坚固耐用等特点的温度测量仪
最新回复
(
0
)