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Numeric Keypad
A set of keys to the right of the main part of the keyboard, used for numeric data entry.
A method of refreshing the image on a monitor. A Non-interlaced monitor refreshes the entire image (each scan line) in one pass. An interlaced monitor refreshes the odd-numbered scan lines first, then refreshes the even-numbered scan lines on the second pass, which can cause flicker and eye strain.
Network Administrator
A person responsible for the maintenance and operation of a computer network.
Network Interface Card. An expansion card that fits into a computer and connects via the network cable to the NICs installed in other computers on the network. It works with the network operating system to send and receive information over the network.
A key on the keyboard that, when pressed, toggles on the ability of the keypad part of the keyboard to input numbers and numerical functions. When pressed again, the keys on the keypad perform cursor movement functions.
In networking and communications, a node is any computer or device attached to the network.
A Network Interface Card allows your computer to connect to a network of computers. The most common type of NIC is ethernet - a very fast method of transferring data between computers. A modem is generally used to dial-up from a home computer to connect to a network or the Internet. However, an ethernet NIC uses a cable that usually connects to a hub which connects to a router which connects to a switch, and these pieces are also often connected to a server through the same type of cable and to the Internet backbone via a fiber optic cable. The NIC allows the computer to share with and get resources from other computers on the network (as well as the Internet if it is not a Local Area Network (LAN). A LAN is a closed network consisting of 2 or more computers that are connected through NICs and hubs, generally not connected to the outside world - the Internet. Hubs allow several computers to share one cable connection (1 cable connects to another hub or router, and the hub provides 5 (more or less) connections for other computers or hubs to connect to).

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