What is the primary difference between UTP and STP copper cabling?

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Multiple Choice

What is the primary difference between UTP and STP copper cabling?

The main idea being tested is whether copper twisted-pair cabling is shielded and how that shielding affects susceptibility to interference. Unshielded twisted pair has no shielding around the twisted conductors, so it can pick up more electromagnetic noise and crosstalk in many environments. Shielded twisted pair adds a shielding layer—foil or braid—around the pairs, which helps reject EMI and keep signals cleaner, especially in electrically noisy settings. That’s why the best answer states that UTP has no shielding while STP includes shielding to reduce EMI. The other statements either misrepresent the physical nature of the cables (for example, suggesting UTP uses fiber or that both types are shielded) or restate the acronym without addressing the practical difference in EMI performance.

The main idea being tested is whether copper twisted-pair cabling is shielded and how that shielding affects susceptibility to interference. Unshielded twisted pair has no shielding around the twisted conductors, so it can pick up more electromagnetic noise and crosstalk in many environments. Shielded twisted pair adds a shielding layer—foil or braid—around the pairs, which helps reject EMI and keep signals cleaner, especially in electrically noisy settings. That’s why the best answer states that UTP has no shielding while STP includes shielding to reduce EMI. The other statements either misrepresent the physical nature of the cables (for example, suggesting UTP uses fiber or that both types are shielded) or restate the acronym without addressing the practical difference in EMI performance.

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