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
考研
In computing, passwords are commonly used to limit access to official users. Yet the widespread use of passwords has serious dra
In computing, passwords are commonly used to limit access to official users. Yet the widespread use of passwords has serious dra
admin
2010-01-17
52
问题
In computing, passwords are commonly used to limit access to official users. Yet the widespread use of passwords has serious drawbacks. Office workers now have to remember an average of twelve system passwords. In theory they should use different passwords for each site, but in reality these would be impossible to remember, so many people use the same password for all.
An additional problem is that the majority use simple words such as "hello", or names of family members, instead of more secure combinations of numbers and letters, such as 6ANV76Y. This permits computer hackers to download dictionaries and quickly find the word that allows them access.
When system users forget their passwords there is extra expense in supplying new ones, while if people are forced to change passwords frequently they often write them down, making systems even less secure. Therefore, it is clear that the idea of passwords, which have been used as security devices for thousands of years, may need rethinking.
One possible alternative has been developed by the American firm Real User, and is called "passfaces". In order to access the system a worker has to select a series of photographs of faces from a randomly (随机地) generated sequence. If the pictures are selected in the correct order, access is granted. This concept depends on the human ability to recognize and remember a huge number of different faces, and the advantage is that such a sequence cannot be told to anyone or written down, so is more secure. It is claimed that the picture sequence, which used photographs of university students, is easier to remember than passwords, and it has now been adopted for the United States Senate.
One can make a password safer by ______.
选项
A、inserting pictures between numbers
B、avoiding the use of letters altogether
C、setting up a firewall against computer hackers
D、using complicated combinations of numbers and letters
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/iAYi777K
本试题收录于:
GCT工程硕士(英语)题库专业硕士分类
0
GCT工程硕士(英语)
专业硕士
相关试题推荐
Thepassageismainlyconcernedwiththe______.Theauthormentionsfoldingchairsinthefirstparagraphinorderto______.
A:Excuseme,Idon’twanttointerruptyou...B:______.
Manypeoplecomplainoftherapid______ofmodernlife.
Iwantanassistantwith______littleknowledgeofGermanand______experienceofofficeroutine.
SpeakerA(TreadingonB’sfoot.):______.IhopeIhaven’thurtyou.SpeakerB:It’sallright.
Elephantswhopaintaren’tnew.PaintingsbyRuby,anAsianelephantwholivedatthePhoenixZooinArizona,soldforupto$5,
Thegovernment______regulationsthatputthisoldcityunderprotection.
Allflights______becauseofthesnowstorm,manypassengerscoulddonothingbuttakethetrain.
TheXinhuabookstorechain,China’slargestofficialpublishingenterprise,hasbecomeasurprisingflashpointforinterestamo
Allflights______becauseofthesnowstorm,manypassengerscoulddonothingbuttakethetrain.
随机试题
在框架—剪力墙结构中,主要承受水平荷载的是()。
VBA支持的循环语句结构不包括()。
久しぶりに再会した恩師の言葉に、自身の至らなさと心得違いを________させられました。
蛋白质一能量营养不良患儿的实验室检查中,最突出的表现是________浓度降低。
PVA05-88中,88代表的醇解度为
A、结肠癌B、溃疡性结肠炎C、肠易激综合征D、习惯性便秘E、肠结核男性,70岁,便秘20年,排便1周1次,现需服泻药方排便,无明显腹痛,一般情况好,肠镜未见异常
消渴病的关键病变脏腑为()。
【2014年四川泸州.单选】最早把“教”和“育”连在一起的思想家是()。
Theinterviewisconductedtodiscussthesignificanceofsalesfiguresinrecessionand
MineralsMineralsarenon-organicsubstanceswhichcontaintheelementcarbon./Buttheyarevitalforgoodhealth/and
最新回复
(
0
)