Not my downvote, but Your ethernet signal is basically an A/C pattern of square waves going down the wire. This is the analog manifestation of your digital da

Not my downvote, but Your ethernet signal is basically an A/C pattern of square waves going down the wire. This is the analog manifestation of your digital data and it behaves like other analog signals going through wires. A twisted pair of wires naturally rejects outside interference better than a random arrangement. However truly parallel wires can be almost as effective under many conditions. An outer well-grounded shield sheath surrounding one or more sensitive conductors can provide even more isolation from nearby signals or noise. Unintended diodes caused by corrosion, unsoldered connections, or dissimilar metals can sometimes compromise analog representations of digital signals by causing assymetry during zero-crossing events.