Chapter E: Glossary
IP Address — Internet address. A
IPX (Internet Packet Exchange) — A proprietary Network layer protocol developed by Novell and used in NetWare networks.
ISDN — Integrated Services Digital Network. Digital transmission standard defining communication protocols permitting telephone networks to carry data, voice, fax and other streams.
Leased Line — A telecommunications line between two service points leased from a communications carrier for private use, usually incurring a monthly service rate.
LEDs (Light Emitting Diodes) — Type of indicator lights on the panel of the router.
Local Area Network (LAN) — A network connecting computers over a relatively small geographic area (usually within a single campus or building).
MAC Layer/Address — Media Access Control layer/address defined by the IEEE 802.3 specification which defines media access including framing and error detection. Part of the OSI reference model Data Link layer.
Metric — An algorithm used by routers to determine the best path for transmitting packets to a remote destination based on considerations such as time, delay, cost, etc.
Modem — Modulator/Demodulator. A device that converts digital signals to/from analog signals for transmission over analog communications lines.
NAT — Network Address Translation uses a unique IP address for a WAN interface. This IP address is negotiated through PPP or assigned statically by the Internet Service Provider (ISP). NAT reduces the number of unique IP addresses for all clients, using a particular WAN interface, to one.
NetWare — A Network Operating System developed by Novell, Inc. providing shared access to files and other network services.
