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
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 car
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 car
admin
2015-06-23
71
问题
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-1" 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 multiuser 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 harm-less 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.
Questions 22 to 25 are based on the passage you have just heard.
22. How did the name of "computer virus" come into being?
23. What is the way that the computer viruses infect the computer system?
24. What is a "benign" virus?
25. What can a "malignant" virus do to your computer?
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
细节题。题目中的benign是关键词,所谓“良性”病毒就是不会造成危害的病毒。故选D。
转载请注明原文地址:https://kaotiyun.com/show/aDl7777K
0
大学英语四级
相关试题推荐
A、TheBritish.B、TheAmericans.C、TheRomans.D、TheRussians.C选项的内容表明,本题考查某个国家的人,听音时注意不同国籍的人的相关情况,并听清问题问的是什么。短文中提到,罗马人首先使用记载式广告
A、History.B、French.C、ComputerScience.D、HotelManagement.C对话中女士先提到IwantedtomajorinFrench,然后考虑到就业原因把专业换成了computerscienc
A、Lookafterthedog.B、Notlookafterthedog.C、Lookafterthedogifsheispaid.D、Findsomeonetolookafterthedog.B由女士所
A、Foodselling.B、Foodgrowing.C、Fooddistribution.D、Foodmanufacturing.C选项中的foodselling/distribution/manufacturing表明,本题与食物生
A、Engineering.B、Computerscience.C、Education.D、Humanresources.C本题考查专业名称。对话中女士提到,TESL是她的专业,并做了解释:ItstandsforteachingEngli
A、Askingfortheteacher’shelp.B、Buyingacomputer.C、Sharingthecomputerwithothers.D、Reservingcomputertime.D由对话中提到的…bu
ANewYorkTimes-CBSNewspollfoundthatalmost90percentofAmericansthinkthathomeownershipisanimportantpartoftheAm
A、Gotothechurchwiththeman.B、GotoaChristmasparty.C、Buysomethingspecialforsupper.D、Haveamealwithherfriend.D
A、Theforeignstudentsshouldhavebigfinancialsupport.B、Thestudentsmustbenominatedbytheirhomegovernments.C、Thestud
随机试题
诊断慢性胃炎最可靠的依据是
血栓闭塞性脉管炎晚期特有的临床表现是
下列合同中,属于可撤销合同的有()。
企业文化的激励功能表现在()。
FederalregulatorsWednesdayapprovedaplantocreateanationwideemergencealert(警报)systemusingtextmessagesdeliveredtoc
课程的CIPP评价模式是由()提出来的。
对于立功的罪犯分子()。
一些精神疾病可以理解为不同的思考方式。米开朗基罗、贝多芬、梵高等许多名人或多或少有这样的特性。他们的艺术才华在一定程度上源于他们的精神紊乱,就像亚里士多德曾经说过的那样,伟大的天才无不带有一丝疯狂。日前,一项针对数十万人进行的研究表明,精神分裂和躁郁症等疾
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。
以下不能用Print方法输出数据的对象或窗口是
最新回复
(
0
)