首页
登录
职称英语
[originaltext] It’s always fun to write about research that you can actually
[originaltext] It’s always fun to write about research that you can actually
游客
2024-05-12
31
管理
问题
It’s always fun to write about research that you can actually try out for yourself.
Try this:Take a photo and upload it to Facebook, then after a day or so, note what the URL link to the picture is, and then delete it Come back a month later and see if the link works. Chances are: It will.
Facebook isn’t alone here. Researchers at Cambridge University have found that nearly half of the social networking sites don’t immediately delete pictures when a user requests they be removed. In general, photo-centric websites like Flickr were found to be better at quickly removing deleted photos upon request.
Why do "deleted" photos stick around so long?The problem relates to the way data is stored on large websites: While your personal computer only keeps one copy of a file, large-scale services like Facebook rely on what are called content delivery networks to manage data and distribution. It’s a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service at the same time. But because changes aren’t reflected across the content delivery networks immediately, ghost copies of files tend to linger for days or weeks.
In the case of Facebook, the company says data may hang around until the URL in question is reused, which is usually "after a short period of time", though obviously that time can vary considerably.
30. Q:What does the speaker ask us to try out?
31. Q:What accounts for the failure of some websites to remove photos immediately?
32. Q:When will the unwanted data eventually disappear from Facebook according to the company?
选项
A、The number of visits they receive.
B、The way they store data.
C、The files they have collected.
D、The means they use to get information.
答案
B
解析
(照片难以及时删除) 这一问题与大型网站储存数据的方式有关。
转载请注明原文地址:https://tihaiku.com/zcyy/3594940.html
相关试题推荐
[originaltext]Fullfacetransplantarenolongersciencefictionfantasy,
[originaltext]Fullfacetransplantarenolongersciencefictionfantasy,
[originaltext]It’salwaysfuntowriteaboutresearchthatyoucanactually
[originaltext]It’salwaysfuntowriteaboutresearchthatyoucanactually
[originaltext]It’salwaysfuntowriteaboutresearchthatyoucanactually
[originaltext]W:Thisfoodisterrible.Ican’tevenfinishmydinner.M:Ikno
[originaltext]W:Thisfoodisterrible.Ican’tevenfinishmydinner.M:Ikno
[originaltext]W:Thisfoodisterrible.Ican’tevenfinishmydinner.M:Ikno
[originaltext]M:Kate,hurryup!Wedon’thaveplentyoftime.Theplanewillt
______(不管观众中的一些人如何使劲地难为他),thecomedianalwayshadaquick,sharpreply.Nomatt
随机试题
Theroleofandtreatmentofthehousewife,whichisreallythemajorboneof
ASocioculturalApproachtoReading,LanguageandLiteracyI.T
Intheearly1800’s,over80percentoftheUnitedStateslaborforcewasengage
[originaltext]M:Hello?W:Eric,it’sMandy.M:Hi.W:YouknowItoldyouwec
图根导线测量中,以下何项反映了导线全长相对闭合差精度要求( )。A.K≤1/
房屋只要在合理的使用年限内,只要属于主体结构的问题()。A、申请质量部
Thechangeinthatvillagewasmiraculou
作为液体制剂溶剂时,具有防腐作用的甘油浓度是A.5%以上B.10%以上C.15%
对癫癎大发作疗效高,且无催眠作用的首选药是()A.苯妥英钠 B.乙琥胺
成都易宝公司于2012年申请注册了“易宝”文字商标,注册类别为第38类即电信类
最新回复
(
0
)