Which cable reduces crosstalk and interference between pairs of wires?

Which cable reduces crosstalk and interference between pairs of wires?

• A. Unshielded Twisted Pair (UTP) cable
• B. Shielded Twisted Pair (STP) cable
• C. Coaxial cable
• D. Fiber optic cable

Answer: (B)

Shielding around twisted-pair cables reduces crosstalk and interference by providing a conductive barrier that blocks electromagnetic coupling between nearby pairs and from external sources. The twisting helps minimize interference, and adding a shield around the pair (or the whole bundle) further suppresses both the interaction between adjacent pairs and external noise. That combination makes shielded twisted pair the best choice for preserving signal integrity in environments with more interference. Unshielded twisted pair lacks that barrier and is more susceptible to crosstalk and noise, while coaxial and fiber handle interference differently and aren’t focused on reducing cross-pair coupling in copper networks.

Shielding around twisted-pair cables reduces crosstalk and interference by providing a conductive barrier that blocks electromagnetic coupling between nearby pairs and from external sources. The twisting helps minimize interference, and adding a shield around the pair (or the whole bundle) further suppresses both the interaction between adjacent pairs and external noise. That combination makes shielded twisted pair the best choice for preserving signal integrity in environments with more interference. Unshielded twisted pair lacks that barrier and is more susceptible to crosstalk and noise, while coaxial and fiber handle interference differently and aren’t focused on reducing cross-pair coupling in copper networks.