CertiGuide to Network+  9  Glossary

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BRI ISDN (Basic Rate Interface Integrated Digital Subscriber Network)

Typically a switched-circuit connection carrying voice or data 1 or 2 digital channels called B for bearer channel. Each channel has a bandwidth of 64Kbps. The most common bandwidth for the 3^rd control channel is 16K, and called the D channel.

Usually a hardware device that operates on the data link layer (layer 2). Knowing the MAC addresses on each side of the bridge, it forwards traffic based on the MAC address.

Multiple communication channels operating simultaneously on a single cable in analog mode. Cable TV is a common example.

An undesirable effect that occurs when a network is congested with redundant traffic.

A device that combines the features of the bridge and router. Capable of working at either layer 2 or layer 3.

Refer to sag.

The process of creating and maintaining an up-to-date list of computers and resources on a network or part of a network by one or more designated computers running the Computer Browser service.

A process in which large amounts of data, such as files, e-mail messages, or online communications sessions, are encrypted for confidentiality. It is usually done with a symmetric key algorithm.

A network in which each node is connected to a common line.

8 bits
Abbreviation for binary digit.
Mathematical counting utilizing zero and one..

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