Important Information
- B -
Bandwidth
A measure of capacity of communications media. Greater bandwidth allows communication of more information in a given period of time. Bandwidth is generally described either in terms of analog signals in units of Hertz (Hz), which describes the maximum number of cycles per second, or in terms of digital signals in units of bits per second.
Bridge
A device that connects two
Broadcast
To simultaneously send the same message to multiple recipients.
- C -
CBR
Short for Constant Bit Rate. A type of ATM service which specifies a fixed bit rate so that data is sent in a steady stream. This is analogous to a leased line.
CRC
Abbreviation of Cyclic Redundancy Check, a common technique for detecting data transmission errors.
- D -
Device
Any machine or component that attaches to a computer. Examples of devices include disk drives, printers, mice and modems.
DHCP
Short for Dynamic Host Configuration Protocol, which is a protocol for assigning dynamic IP addresses to devices in a network. With dynamic addressing, a device can have a different IP address every time it connects to the network. Many ISPs use dynamic IP addressing for
DMZ
A Demilitarized Zone is used by a company that wants to host its own Internet services without sacrificing unauthorized access to its private network. The DMZ sits between the Internet and an internal network's line of defense, usually some combination of firewalls and bastion hosts.
EN/LZT 108 6377 R4 - September 2003 | 89 |
