Information For The Different Network Options

BROADBAND – A method of transmission using bandwidth that is larger than voice-grade channels and has the potential for much higher transmission rates (also called wideband). In broadcast transmissions, radio frequency modems are used to access multiple channels with a large bandwidth through a medium such as coaxial cable. Each channel is modulated to a different frequency slot on the transmitting end of the cable and demodulated to it’s original frequency on the receiving end. Cable television is a prime example of this method of transmission.

DOMAIN – A group of computers and devices on a single network that share administration as a unit with common procedures and protocols. On the internet, domains are defined by their unique IP Address. All devices sharing a common part of the IP Address are considered part of the same domain.

ROUTER – A device which determines the next network point a data packet will be forwarded to while enroute to it’s destination. The router is connected to a minimum of two networks and determines the path each data packet will take, based on it’s understanding of the current state of the networks it is connected to. Routers create and/or maintain a table of available routes and uses this information to determine the best route for any given data packet.

SWITCH – A small device joining multiple computers on a low-level network protocol layer. Network switches operate at a layer-two (Data Link Layer) of the OSI model. Network switches look almost identical to hubs, but switches generally contain more “intelligence” (and a higher cost) than a hub. Unlike hubs, network switches are capable of inspecting data packets as they are received, determining the source and destination device, and forwarding the data packets accordingly. Network switches conserve network bandwidth and offer better performance than hubs because they deliver messages to the intended device only.

WIRELESS – Wireless LANs (Local Area Networks) and WANs (Wide Area Networks) transmit and receive data using radio frequency (RF) technology, thereby minimizing the need for “wired” connections and providing mobility for it’s users. WANs are networks that provide the capability of transmitting data and sharing resources, such as printers and other hardware, without being physically connected to a node, network, or computer. Wireless LANs provide increased productivity, convenience, and cost-savings over traditional “wired” networks. The 802.11(b) PC cards provide networking within 75 to 300 feet at 5-7 Mbps.

WIRELESS NETWORK ADAPTOR – A PC card allowing a computer to connect to a wireless network.

WIRELESS ROUTER – Similar to a switch or standard wired router, which allows the transmission of information over a network without the use of LAN cables. Wireless routers also provide ports to provide a connection for cabled systems, which may not be equipped with a wireless adaptor.

WORKGROUP – A group of individual workstations and servers on a LAN (Local Area Network). Workgroups are designed to communicate and exchange data with others in the same group.