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
Before the arrival of the internet, computer files were exchanged via storage media such as floppy disks (软盘) which were sent by
Before the arrival of the internet, computer files were exchanged via storage media such as floppy disks (软盘) which were sent by
admin
2013-05-29
65
问题
Before the arrival of the internet, computer files were exchanged via storage media such as floppy disks (软盘) which were sent by post or delivered by foot, bike, car or train. After the appearance of the internet, a term was invented for such exchange of information: the sneakernet. Now that the internet is established, and our connections have become faster, the sneakernet sounds outmoded. Nevertheless, the opposite is true when larger files are considered. Because storage media evolve much faster than internet connections, it becomes ever more interesting to choose the route of physical transport over the internet.
One of the routes is via carrier pigeon(信鸽). This may sound ridiculous (and it has been a popular joke for many years), but thanks to shrinking storage media, the speed and capacity of the pigeon internet promises to become quite amazing.
A well trained contemporary carrier pigeon can maintain a speed of 50 kilometres an hour over a distance of 600 kilometres, and carry a weight of 1 gram. One gram does not seem to be much, but this weight can already contain quite some data. For instance, the Transcend Micro SD card weighing 1 gram has a capacity of 2 gigabytes.
Compared to a fibre connection, the pigeon has to surrender quite fast. This internet connection only needs 2.6 minutes to send 2 gigabytes. A carrier pigeon only flies 2 kilometres far in that time. A carrier pigeon is thus faster than a fibre connection when the distance is shorter than 2 kilometres. A broadband connection needs 4 hours to send 2 gigabytes, while the pigeon can reach a distance of 200 kilometres in 4 hours. This means that sending 2 gigabytes of information from Amsterdam to Brussels goes faster by carrier pigeon than by a broadband connection. A dial-up connection needs 3.3 days to send 2 gigabytes, so in that case, the pigeon (flying 600 km per day) is faster than the internet up to a distance of about 2,000 kilometres.
The bandwidth of a carrier pigeon increases faster than the bandwidth of the internet. Ten years in the future, a pigeon will be able to carry 2 terabytes (around 2,000 gigabytes). Our fibre connection will need 8.5 minutes for sending that amount of data. The carrier pigeon is then faster than a fibre connection if the distance is less than 7 kilometres-compared to 2 kilometres today.
Which title is most appropriate for the passage?
选项
A、Carrier Pigeons versus the Internet
B、Limitations of Carrier Pigeons and the Internet
C、Hard Choice: Carrier Pigeons or the Internet
D、Last Days of Carrier Pigeons in the Internet Age
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/97TO777K
0
研究生英语学位课统考(GET)
相关试题推荐
Planningisaveryimportantactivityinourlivesyetreallysophisticated.Itcangivepleasure,evenexcitement,【C1】______ca
Planningisaveryimportantactivityinourlivesyetreallysophisticated.Itcangivepleasure,evenexcitement,【C1】______ca
Planningisaveryimportantactivityinourlivesyetreallysophisticated.Itcangivepleasure,evenexcitement,【C1】______ca
ThedevelopmentandwidespreaduseofcomputertechnologyandtheInternethavetransformedhowwecommunicate,howwecommunica
Thepoliceareworkingona______intosuspecteddrugdealingintheoutskirtofthecity.
Inasocietywhereallaspectsofourlivesaredictatedbyscientificadvancesintechnology,scienceistheessenceofourexi
Ourlivesarewoventogether.AsmuchasIenjoymyown【C1】______,InolongerimagineIcangetthroughasingledaycompletely
Ourlivesarewoventogether.AsmuchasIenjoymyown【C1】______,InolongerimagineIcangetthroughasingledaycompletely
Susannevertookanycookerycourses;shelearnedcookingby______usefultipsfromTVcookeryprograms.
Theroughguidetomarketingsuccessusedtobethatyougotwhatyoupaidfor.Nolonger.Whiletraditional"paid"media—such
随机试题
导游员将散客或小包价旅游团送到饭店后,应帮助其尽快完成()手续。
既可以选择一个值,又能够输入一个值的控件是()
下列不属于抗甲状腺药物的是
市残疾人联合会和市牙防组针对全市5千多残疾儿童的口腔保健现状,拟订了改进方案以促进口腔预防保健工作,考虑到残疾人丧失或部分丧失了自我口腔保健能力和本市发展现状。帮助残疾儿童刷牙应选择好
室温允许波动范围为±1℃的工艺性空调房间。不应有:(2006。78)
事业支出的发生额一定影响当期事业基金。()
教师评分的相对标准对应的评价方式为()。
Prettyinpink:adultwomendonotrememberbeingsoobsessedwiththecolour,yetitispervasiveinouryounggirls’lives.It
Idon’tthinkit’ssensibleofyouto____yourgreaterknowledgeinfrontofthechairwoman,foritmaywelloffendher.
A、Theratioofplastictofishintheoceanswillbe1:3.B、Eightmilliontonsofplasticwillbeintheoceans.C、Atruckload
最新回复
(
0
)