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2. Cable tester - Wikipedia

   en.wikipedia.org/wiki/Cable_tester

   A cable tester is an electronic device used to verify the electrical connections in a signal cable or other wired assembly. Basic cable testers are continuity testers that verify the existence of a conductive path between ends of the cable, and verify the correct wiring of connectors on the cable. More advanced cable testers can measure the ...

3. Carrier-sense multiple access with collision detection

   en.wikipedia.org/wiki/Carrier-sense_multiple...

   CSMA/CD was used in now-obsolete shared-medium Ethernet variants (10BASE5, 10BASE2), and in the early versions of twisted-pair Ethernet, which used repeater hubs. Modern Ethernet networks, built with switches and full-duplex connections, no longer need to use CSMA/CD, because each Ethernet segment, or collision domain, is now isolated. CSMA/CD ...

4. Ethernet - Wikipedia

   en.wikipedia.org/wiki/Ethernet

   An Ethernet adapter card for the IBM PC was released in 1982, and, by 1985, 3Com had sold 100,000. [16] In the 1980s, IBM's own PC Network product competed with Ethernet for the PC, and through the 1980s, LAN hardware, in general, was not common on PCs. However, in the mid to late 1980s, PC networking did become popular in offices and schools ...

5. Medium-dependent interface - Wikipedia

   en.wikipedia.org/wiki/Medium-dependent_interface

   The terminology generally refers to variants of the Ethernet over twisted pair technology that use a female 8P8C port connection on a computer, or other network device.. The X refers to the fact that transmit wires on an MDI device must be connected to receive wires on an MDI-X device.

6. Carrier-sense multiple access with collision avoidance

   en.wikipedia.org/wiki/Carrier-sense_multiple...

   Carrier-sense multiple access with collision avoidance (CSMA/CA) in computer networking, is a network multiple access method in which carrier sensing is used, but nodes attempt to avoid collisions by beginning transmission only after the channel is sensed to be "idle". [1] [2] When they do transmit, nodes transmit their packet data in its entirety.

7. List of early Ethernet standards - Wikipedia

   en.wikipedia.org/wiki/List_of_early_Ethernet...

   Thick Ethernet DIX Standard: 802.3-1983 (CL8) obsolete 09/2003 Coax RG-8 (50 Ω) AUI, N, Vampire tap: MAU: 500 1 N/A 1 LAN; original standard; electrical bus topology with collision detection; uses a single coaxial cable into which you literally tap a connection by drilling into the cable to connect to the core and screen. 10BASE2 Thin Ethernet ...