2007年4月10日 星期二

寬頻速度如何計算?

在傳輸單位的理論上,B 代表 Byte,b 代表 bit,兩者的定義是不同的。

速度換算表;
1 Byte = 8 bits
1 Kb = 1024 bits
1 KB = 1024 bytes (= 8192 bits)
1 Mb = 1024 kb
1 MB = 1024 KB (= 8192 kb)


例子1;如你是使用 100Mbps 的客戶,下載速度為 – 10.2 MB/s
= 10.2 x 8 Mb/s
= 81.6 Mbps

例子2; 如你是使用 100Mbps 的客戶,上載速度為 – 10462.6 KB/s
= 10462.6 / 1024 MB/s
= 10.21MB/s
= 10.21x 8 Mb/s
= 81.7Mbps

例子3; 如你是使用 10Mbps 的客戶,下載速度為 – 1.10 MB/s
= 1.1 x 8 Mb/s
= 8.8 Mbps

例子4; 如你是使用10Mbps的客戶,上載速度為 – 1126.4 KB/s
= 1126.4 / 1024 MB/s
= 1.1MB/s
= 1.1 x 8 Mb/s
= 8.8Mbps

例子5; 如你是使用 6Mbps 的客戶,下載速度為 – 621 KBs
= 621 / 1024 MB/s
= 0.606 x 8 Mb/s
= 4.85 Mbps

例子6; 如你是使用 6Mbps 的客戶,上載速度為 – 62 KB/s
= 62 / 1024 MB/s
= 0.0605MB/s
= 0.0605 x 8 Mb/s
= 0.48Mbps (491Kb/s)

2007年4月2日 星期一

Wiley - Linux Bible 2007



名稱 : Linux Bible 2007 Edition: Boot up Ubuntu, Fedora, KNOPPIX, Debian, SUSE, and 11 Other Distributions
出版 : Wiley (March 12, 2007)
格式 : pdf
大小 : 15M
語言 : 英文
頁數 : 888 頁
ISBN-10 : 0470082798
ISBN-13 : 978-0470082799
簡介 :

Linux is productive enough to use as your only desktop system and powerful enough to run entire corporate enterprise installations. Get the most out of Linux for your home, small business, or corporate computing needs with this comprehensive reference as your guide. Walk through 16 different Linux distributions, find step-by-step instructions, discover new programming tools—and tap into the world of free software. This is the book you need to succeed with Linux.

* Master Linux for desktops, servers, and workstations
* Find, install, and use tons of free and open source software
* Launch all your music, video, images, and documents in Linux
* Browse, e-mail, or chat over the Internet from a Linux desktop
* Set up your own e-mail and Web (LAMP) servers
* Make safe connections using firewalls and other security tools
* Run Linux on anything from an old PC to a high-end server

A total of 16 different Linux distributions are included on the DVD and CD-ROM.

* To try out Linux, boot directly to KNOPPIX, Ubuntu, Gentoo, SLAX, Damn Small Linux, and other live Linux distributions
* To keep Linux permanently, install Fedora, Ubuntu, Gentoo, SUSE, Debian, and Slackware Linux distributions to your hard disk

Download link : http://www.badongo.com/file/2641260