The maximum bit rate is called "bandwidth" because, according to Hartley's law, the maximum data rate of a physical communication link is related to its bandwidth in hertz, which is sometimes called "analog bandwidth" in computer networking literature. For the case of high signal-to-noise ratio, the digital bandwidth of a bit stream or logical link in a computer network is proportional to the average spectral bandwidth of the analog signal representing the bit stream during a studied time interval.
In website hosting, the term "bandwidth" is often used to describe the amount of data transferred to or from the website or server within a prescribed period of time. Another more specific phrase used for this meaning of bandwidth is monthly data transfer.
Web hosting companies often quote a monthly bandwidth limit 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.
Below is a table showing the maximum bandwidth of different connection types to the internet:
|56 kbit/s||Modem / Dialup|
|11 Mbit/s||Wireless 802.11b|
|54 Mbit/s||Wireless-G 802.11g|
|100 Mbit/s||Fast Ethernet|
|300 Mbit/s||Wireless-N 802.11n|
|1000 Mbit/s||Gigabit Ethernet|
|10 Gbit/s||10 Gigabit Ethernet|