When using a straight through cable for networking, only 3 pairs are used.
4 pairs of wires.
Four pairs. Only one pair required for normal LAN operation though.
Cat-5 has 4 pairs and 8 wires
Cat-5 has 4 pairs and 8 wires
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A category 6 cable contains 4 pairs of wires, for a total of 8. The pairs are twisted together along the length of the cable, which helps to reduce noise and preserve the signal.
If you're referring to the Cartesian coordinate system, then it's 2 ordered pairs e.g. a straight line could be drawn between pairs (3, 5) and (2, 3) etc.
The coordinates of the corners of a polygon, the locus of curves, and many many other possibilities. In fact, ordered pairs that form a line are the exceptions.
In order to draw a straight line, two unique ordered pairs are needed. This is because two unique points determine a line and an ordered pair represents a point.
There are four wire pairs in CAT 5 cable. (Orange&White Orange, Blue&White Blue, Green&White Green, Brown&White Brown) Not in order of use
2 wire of pair