Which statement best describes twisted-pair cabling?

• A. It is susceptible to crosstalk and electromagnetic interference.
• B. It has higher bandwidth than fiber in all cases.
• C. It is never used in enterprise networks.
• D. It uses coaxial connectors.

Answer: (A)

Twisted-pair cabling relies on twisting conductors to help cancel out noise, but because the signals share nearby copper paths, it remains susceptible to interference. Crosstalk between adjacent pairs (signals leaking from one pair into another) becomes more pronounced at higher frequencies and longer distances, while external electromagnetic interference from nearby equipment or power lines can distort the signal as well. Shielding can mitigate EMI, but it doesn’t completely eliminate crosstalk. This is why twisted-pair isn’t immune to interference, especially compared with fiber, which handles bandwidth and distance far more readily. The other statements don’t fit because twisted-pair is widely used in enterprise networks, it doesn’t inherently have higher bandwidth than fiber in all cases, and it uses RJ-45-style connectors rather than coaxial ones.