100Base-T — A generic name for 100 Mb/s twisted pair CSMA/CD proposals before the IEEE 802.3. Specific proposals include 100Base-Tx and 100Base-T4. *

100Base-T4 — A particular alternative within the 100Base-TX CSMA/CD proposals before the IEEE 802.3 for a 100 Mb/s Ethernet that specifies four pair of UTP3, UTP4, or UTP5. *

100Base-TX — A particular alternative within the 100Base-TX CSMA/CD proposals before the IEEE 802.3 for a 100 Mb/s Ethernet that specifies two pair of UTP5. *

100Base-X — 100 Mbits/sec throughput over hierarchical twisted-pair wiring configurations using the existing CSMA/CD access method.

10Base-2 — A transmission medium specified by IEEE 802.3 that carries information at rates up to 10Mbps in baseband form using low-cost coaxial cable over distances up to 185 meters (607 ft). Also called "thin Ethernet" or "thinnet" or "thin coax" or "cheapernet".

10Base-5 — A transmission medium specified by IEEE 802.3 that carries information at rates up to 10Mbps in baseband form using 50 ohm coaxial cable over distances up to 500 meters (1,640 ft). Also called "thick Ethernet" or "thicknet" or "thick coax", the cable is commonly referred to as yellow cable. Thick Ethernet cable is typically used as a trunk or backbone path of the network.

10Base-FL — IEEE 802.3 Fiber Optic Ethernet. A fiber optic standard that allows up to 2,000 meters (6,560 ft.) of multimode duplex fiber optic cable in a point-to-point link.

10Base-T — A transmission medium specified by IEEE 802.3 that carries information at rates up to 10Mbps in baseband form using twisted pair conductors. Also called unshielded twisted pair (UTP) wire. Using low cost Level 3 or better UTP wiring, 100 meters (328 ft.) of point-to-point link segments are possible. Uses RJ45 connectors and sometimes 50-pin AMP connectors to a patch panel.

16-bit — An adjective that describes systems and software that handle information in words that are 2 bytes (16 bits) wide.

1Base-5 — Twisted pair cable with maximum segment lengths of 500 meters and transmission speeds of up to 1 Mbit/sec.

32-bit — An adjective that describes hardware or software that manages data, program code, and program address information in 32-bit-wide words.

486 — An Intel 80386-compatible microprocessor that includes an onboard floating point unit for increased mathematical speed and operates at higher clock speeds than a 80386

50-Pin Telco (RJ21) — This connector is very common in 10BASE-T wiring. As opposed to the RJ45 connector, the 50-pin Telco connector concentrates up to 12 UTP connections onto one connection. This concentration of UTP ports is then broken out for connection to a punch-down block inside a building's wiring closet. 50-pin Telco connections provide a very clean, uncluttered interface to the building's wiring.

802.3 — Defined by the IEEE, these standards govern the use of the CSMA/CD (Carrier Sense Multiple Access/Collision Detection) network access method used by Ethernet networks.

802.4 — Defined by the IEEE, these standards govern the use of the token bus network access method.

802.5 — Defined by the IEEE, these standards govern the use of the token ring network access method.

80386 — The Intel microprocessor that introduced the power of 32-bit computing to the IBM PC-compatible computer. The 80386 also introduced memory management, which allowed the use of virtual memory and hardware level multitasking and protected mode, which increased the stability of operating systems by allowing them to restrict the activities of user-level programs.