Prestige 642 PPPoE Modem
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| Glossary |
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| Uses two pairs of |
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| the hub and the workstation. |
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| The |
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| cabling (Category 3 or 5), one pair for transmitting data and the other for receiving |
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| data. |
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| ADSL |
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| Asymmetrical Digital Subscriber Line is an asymmetrical technology which means that |
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| the downstream data rate of the line is much higher than the upstream data rate. ADSL |
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| operates in a frequency range that is above the frequency range of voice services, so the |
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| two systems can operate over the same cable. |
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| Analog |
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| An electrical circuit that is represented by means of continuous, variable physical |
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| quantities (such as voltages and frequencies), as opposed to discrete representations |
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| (like the 0/1, off/on representation of digital circuits). |
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| ARP |
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| Address Resolution Protocol is a protocol for mapping an Internet Protocol address (IP |
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| address) to a physical computer address that is recognized in the local network. |
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| Bandwidth |
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| This is the capacity on a link usually measured in |
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| Bit |
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| A Binary Digit (either a one or a zero); a single digit number in |
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| smallest unit of computerized data. |
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| Byte |
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| A set of bits that represent a single character. There are eight bits in a byte. |
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| Camping Out |
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| Staying in a "safe" place once a hacker has broken into a system. The term can be used |
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| with a physical location, electronic reference or an entry point for future attacks. |
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| CHAP |
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| Challenge Handshake Authentication Protocol is an alternative protocol that avoids |
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| sending passwords over the wire by using a challenge/response technique. |
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| Client |
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| A software program that is used to contact and obtain data from a server software |
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| program on another computer. Each client program is designed to work with one or |
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| more specific kinds of Server programs and each server requires a specific kind of |
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| client. A web browser, for example, is a specific kind of client. |
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| CO |
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| Central Office. A CO is a facility that serves local telephone subscribers. In the CO, |
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| subscribers' lines are joined to switching equipment that allows them to connect to each |
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| other for both local and long distance calls. |
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| COE |
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| Central Office Equipment. COE is where home and office phone lines terminate and |
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| connect to a much larger switching system. |
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| Command Line |
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| A command line interface is a computer environment in which you enter predefined |
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| commands on the command line to modify, configure and display information about a |
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B | Glossary |