Bandwidth (computing)

In computing, bandwidth is the maximum rate of data transfer across a given path. Bandwidth may be characterized as network bandwidth,^[1] data bandwidth,^[2] or digital bandwidth.^[3]^[4]

This definition of bandwidth is in contrast to the field of signal processing, wireless communications, modem data transmission, digital communications, and electronics,^{[citation needed]} in which bandwidth is used to refer to analog signal bandwidth measured in hertz, meaning the frequency range between lowest and highest attainable frequency while meeting a well-defined impairment level in signal power. The actual bit rate that can be achieved depends not only on the signal bandwidth but also on the noise on the channel.

^ Douglas Comer, Computer Networks and Internets, page 99 ff, Prentice Hall 2008.
^ Fred Halsall, to data+communications and computer networks, page 108, Addison-Wesley, 1985.
^ Cisco Networking Academy Program: CCNA 1 and 2 companion guide, Volym 1–2, Cisco Academy 2003
^ Behrouz A. Forouzan, Data communications and networking, McGraw-Hill, 2007

[1] Douglas Comer, Computer Networks and Internets, page 99 ff, Prentice Hall 2008.

[2] Fred Halsall, to data+communications and computer networks, page 108, Addison-Wesley, 1985.

[3] Cisco Networking Academy Program: CCNA 1 and 2 companion guide, Volym 1–2, Cisco Academy 2003

[4] Behrouz A. Forouzan, Data communications and networking, McGraw-Hill, 2007

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