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 ...

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...to consolidate the cable clutter associated with multiple peripherals and ports, USB supports all types of computer- and telephone-related devices. • USB detects and configures the new devices instantly • Before the arrival of Universal Serial ...

...mount shelves, trays, cable managers, and power strips. • Shelves • Shelves are an easy solution for storing things that aren’t rackmountable. The shelves attach to the rails; servers or other equipment sits on the shelves. Make sure the shelf has...

...money. • Computer cables can only be too short, but never too long. The same applies to networking cables. Sometimes it is just the last meter that is missing, but in many cases some kilometres are missing. A standard 10/100 or 10/100/1000 Cop...

...ratios • Within a CATx cable of a certain length, the individual pairs might have individual different lengths, caused by higher or lower twist ratios. • There are two common cable standards: • One with a 2 + 2 structure (two pairs of approximately...

...of Cat 3 and Cat 4 cables • Category 3 • Category 3 is the performance level for voice and data transmission up to 16 MHz or 10 Mbps, such as 4-Mbps Token Ring and 10BASE-T. • Category 4 • Categroy 4 is the performance level for voice and data ...