Which is one of the main advantages of shielded cables?
Shielded or screened cables have the advantage of eliminating, to a large extent, external interference (EMI/RFI), and if each individual pair in the cable is shielded, the crosstalk between pairs is almost eliminated (next), which highly improves their performance margin in relation to the standard.
The transmission performance of structured cable solutions is generally measured comparing the maximum frequency, in which a higher signal rather than noise is obtained.