Appendix C: Specifications - Network Everywhere NWP11B User Manual

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Subnet Mask - The method used for splitting IP networks into a series of sub-

groups, or subnets. The mask is a binary pattern that is matched up with the IP

address to turn part of the host ID address field into a field for subnets.

TCP (Transmission Control Protocol) - A method (protocol) used along with

the IP (Internet Protocol) to send data in the form of message units (datagram)

between network devices over a LAN or WAN. While IP takes care of handling

the actual delivery of the data (routing), TCP takes care of keeping track of the

individual units of data (called packets) that a message is divided into for effi-

cient delivery over the network. TCP is known as a "connection oriented" pro-

tocol due to requiring the receiver of a packet to return an acknowledgment of

receipt to the sender of the packet resulting in transmission control.

TCP/IP (Transmission Control Protocol/Internet Protocol) - The basic com-

munication language or set of protocols for communications over a network

(developed specifically for the Internet). TCP/IP defines a suite or group of

protocols and not only TCP and IP.

Throughput - The amount of data moved successfully from one place to

another in a given time period.

Topology - A network's topology is a logical characterization of how the

devices on the network are connected and the distances between them. The

most common network devices include hubs, switches, routers, and gateways.

Most large networks contain several levels of interconnection, the most impor-

tant of which include edge connections, backbone connections, and wide-area

connections.

WAN (Wide Area Network)- A communications network that covers a rela-

tively large geographic area, consisting of two or more LANs. Broadband com-

munication over the WAN is often through public networks such as the tele-

phone (DSL) or cable systems, or through leased lines or satellites. In its most

basic definition, the Internet could be considered a WAN.

WEP (Wired Equivalent Privacy) - A data privacy mechanism based on a 64-

bit or 128-bit shared key algorithm, as described in the IEEE 802.11 standard.

WLAN (Wireless Local Area Network) - A group of computers and associat-

ed devices that communicate with each other wirelessly.

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