Bandwidth (computing)

In computer network and computer science, digital bandwidth or just bandwidth means the amount of data that can be sent from one point to another in a certain period of time. It is measured as a bit rate expressed in bits per second (bits/s) or multiples of it (kbit/s Mbit/s etc.) 

Digital bandwidth should not be confused with:
Network throughput: which is the average rate of successful data transfer through a connection. 
Data transfer: which is the quantity of data transferred over a given period of time.

 Bandwidth in web hosting 
In web hosting, the term "bandwidth" is often used to describe the amount of data transferred to or from the website within a defined period of time. Another more specific phrase used for this meaning of bandwidth is monthly data transfer.

Web hosting companies often quote a monthly data transfer for a website, for example 500 gigabytes per month. If the total amount of data downloaded from the website in a particular month reaches this limit, the hosting company may shut off further public access to the site.

 Internet connections bandwidths 
 Bandwidth Connection type 56 kbit/s Modem / Dialup 1.544 Mbit/s T1 10 Mbit/s Ethernet 11 Mbit/s Wireless 802.11b43.232 Mbit/sT3   54 Mbit/s Wireless-G 802.11g 100 Mbit/s Fast Ethernet155 Mbit/sOC3   300 Mbit/s Wireless-N WiFi622 Mbit/sOC12  1000 Mbit/s Gigabit Ethernet2.5 Gbit/sOC48  9.6 Gbit/sOC192   10 Gbit/s 10 Gigabit Ethernet

Broadband
Sometimes, the word "broadband" is used to mean "high-speed", especially with high-speed internet connections.  "Broadband" means "wide band", and suggests high-speed.  However, the term is not clear;  "high-speed" is more clear. A dial-up telephone connection is most often thought to be low-speed, at less than 56,000 bit/s (bits per second). High-speed is usually 200,000 bit/s or faster. DSL (Digital Subscriber Line) or Cable modem connections are usually high-speed.

 References 

 Other websites 
Bandwidth -Citizendium

Category:Computer science