CertiGuide to Network+  9  Glossary

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CMOS

Complementary Metal-Oxide Semiconductor. Pronounced ‘see-moss’. Its strength is very low power consumption, making it ideal for holding data, with power being derived from a battery. Used for holding configuration and variable data, such as date and time.

Central Office. A telephone switching station for a customer. The point that generates dial tone for the customer. All calls are switched from the CO.

A cable with a conductor wire in the center, surrounded by a non-conductive material, with a braid shield (ground for the carrier wire) made of aluminum or copper, followed by a jacket. The carrier and braid jacket are concentric, or co-axial, which is where the name coax is derived from.

1. A predefined set of instructions, creating a program.
2. A method of specifying the way which data may be presented.

A page that maps character codes to individual characters. Different code pages include different special characters, typically customized for a language or a group of languages. The system uses code pages to translate keyboard input into character values for non-Unicode based applications, and to translate character values into characters for non-Unicode based output displays.

The art and science of writing computer programs.

Ethernet signals from two or more nodes in an network, that occurred simultaneously.

Ethernet utilizes CSMA/CD (Carrier Sense Multiple Access/Collision Detection). If a NIC (Network Interface Card) detects an increase in voltage, it is an indication that two packets collided before reaching the intended destination.

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