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Black Box Explains: Networking Standards • As a result of research done at Xerox Corporation in the early 1970s, Ethernet has evolved into the most widely implemented physical and Data link layer protocol today and, in 1978, the International ...
OM3 and OM4 • OM3 and OM4 • There are different categories of graded-index multimode fiber optic cable. The ISO/IEC 11801 Ed 2.1:2009 standard specifies categories OM1, OM2, and OM3. The TIA/EIA recognizes OM1, OM2, OM3, and OM4. The TIA/EIA r...
Gigabit Ethernet • Gigabit Ethernet • As workstations and servers migrated from ordinary 10-Mbps Ethernet to 100-Mbps speeds, it became clear that even greater speeds were needed. Gigabit Ethernet was developed for an even faster Ethernet stan...
SFP, SFP+, and XFP transceivers • SFP, SFP+, and XFP transceivers • SFP, SFP+, and XFP are all terms for a type of transceiver that plugs into a special port on a switch or other network device to convert the port to a copper or fiber interfac...
PoE phantom power • PoE phantom power • PoE over Gigabit Ethernet • 10BASE-T and 100BASE-TX Ethernet use only two pairs of wire in 4-pair CAT5/CAT5e/CAT6 cable, leaving the other two pairs free to transmit power for Power over Ethernet (PoE) a...
UltraSCSI • UltraSCSI • The history of computers has been shaped by getting information in and out of the processor faster, and the history of SCSI has been shaped by trying to open a wider path in and out of the processor. The path, or interf...
IEEE 1394 - Firewire • IEEE 1394 - Firewire • Although USB has emerged as the simple plug-and-play standard for attaching peripherals, there is a faster standard called IEEE 1394. • Used for High speed Multimedia equipment • Developed by Sony®...
Bend radius • Bend radius • Bending a fibre cable • One of the most important considerations when installing fibre optic cable is maintaining the minimum bend radius. Bending a fibre cable excessively may cause the optical signal to refract an...
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