官方APP下载:英语全能特训(微信小程序版,支持苹果手机、安卓手机)
创办于2003年
UNSV记不住?那就记中文谐音“忧安思危”吧!
  Slow and Steady Wins the Race!
UNSV英语学习频道 - Slow and steady wins the race!
英语全能特训(微信小程序)
UNSV英语学习频道淘宝网店
客服短信:18913948480
客服邮箱:web@unsv.com
初级VIP会员
全站英语学习资料下载。
¥98元/12个月

TECHNOLOGY REPORT - Shortage of Internet Addresses, but a Slow Move to New System

阅读次数:


VIP会员专享下载:(非VIP会员无权下载!如果想下载,但还不是VIP会员,请点此订购
下载方式:使用鼠标右键(注意是鼠标右键!)点击下面的MP3音频/MP4视频链接,然后选择“另存为…”。
英汉翻译对照 英汉翻译对照  MP3节目录音 MP3节目录音  PDF节目文稿 PDF节目文稿  MP3同步字幕 MP3同步字幕  词汇句型精讲 词汇句型精讲 
文章正文
同步字幕
Smartphones, cars, televisions and game systems all connect to the Internet
Smartphones, cars, televisions and game systems all connect to the Internet

This is the VOA Special English Technology Report.

Last Wednesday, June eighth, was World IPv6 Day -- the first major deployment of Internet Protocol version 6. Hundreds of Internet service providers and Web companies tested IPv6 on their websites.

This new numbering system for Internet addresses has been available for years. But very few companies have switched to it. Yet the old system could run out of addresses this year because of all the growth in online devices. Doug Szajda, a computer science professor at the University of Richmond in Virginia, explains.

DOUG SZAJDA: "It's sort of like the post office of the Internet. It tells you how to get information from one computer to another. Currently, and since around nineteen eighty, the addressing system has been IP version 4. But the problem with that is that we've run out of addresses. So it's almost as if, when a new house is built, you can't give it an address because you don't have any more."

IPv4 was designed to handle just over four billion IP addresses. Doug Szajda says that seemed like more than enough

DOUG SZAJDA: "At the time that IP version 4 was designed, the designers were anticipating perhaps thousands of users of the Internet someday, and certainly thinking that four billion addresses was many more than we would ever need."

Yet now, not just computers but smartphones, cars, televisions, game systems and plenty of other devices all connect to the Internet. Each uses a different IP address.

The basic standards for IPv6 were first published in nineteen ninety-eight. Doug Szajda says its most important feature is the ability to provide what seems like an unlimited number of IP addresses. Well, there is a limit -- three hundred forty trillion trillion trillion in fact, or three hundred forty undecillion. That's three hundred forty followed by thirty-six zeros.

Experts say the challenge now is to get the world to use it. Mr. Szajda says that was the real purpose of last week's World IPv6 Day sponsored by the Internet Society.

DOUG SZAJDA: "It was less a worldwide test than a means of generating some incentive for vendors to realize we can't drag our feet anymore. This has to happen."

The process of switching to IPv6 can be complex and costly. This could explain why so few companies have made the switch. CompTIA, the Computing Technology Industry Association, recently did an opinion study. The group talked to more than four hundred information technology and business leaders in the United States. Only twenty-one percent said they have started doing work to upgrade their networks to the new system.

And that's the VOA Special English Technology Report, written by June Simms. For more technology news, go to www.unsv.com. I'm Steve Ember.

网友的学习评论(5条):
作者:lvjiaying1984
The IPv4 version does run out of addresses because it only provide a little more than four billion addresses. By contrast, the IPv6 provide nearly what seemed like a unlimited number of addresses. As times pass by, more and more people buy computers for education, entertainment, science and some other purposes and each of the computers which are connected to the Internet are given IP addresses. Not only computers, but also other devices such as the mobile phone,
作者:lvjiaying1984
the cars and the television can all be connected to the Internet and be given an address. The online surging in China aroused in the late twenties in China. At that time, few of the families have computers and the only place they can go to to surge through the Internet is in the net room. Luckily for me, my father purchased a computer when I was about to become a high school student. However, it is not connected to the Internet.
作者:lvjiaying1984
For one thing, it might cost too much to afford by our family and for the other, we didn't recognize the large resources filling the Internet. And at that time, few of companies, government offices have connected to the Internet because it seemed like a new-born baby, no one knows how it behaved. In 2009, our family bought a new computer which is capable of complex computing, able to undertake large games such as the need for speed and some other famous computer games.
作者:lvjiaying1984
But the real excitement came when we connected the computer to the Internet. I found I could nearly find all the information on the Internet which couldn't be found in other places, such as the bookshops or the school libraries. And now I do enjoy the excitement of chatting with others, sharing my own opinions about something with others and downloading what I need through the Internet. And I can make the whole world a village with the help of the Internet.
作者:lvjiaying1984
I find it comfortable to share my opinions with others all overthe world in a foreign website the language of which is English. There are many advantages beside this. You can post what you want to solve at a forum where there will be people answering your questions and help you to survive society.
版权所有©2003-2019 南京通享科技有限公司,保留所有权利。未经书面许可,严禁转载本站内容,违者追究法律责任。 互联网经营ICP证:苏B2-20120186
网站备案:苏ICP备05000269号-1中国工业和信息化部网站备案查询
广播台