Which statement correctly characterizes twisted pair cabling?

• A. Shielded copper cable with medium cost.
• B. Fiber optic uses light to transmit data.
• C. Twisted pair is electrical copper low cost.
• D. Wireless copper-based media for short-range.

Answer: (C)

Twisted pair cabling is a copper electrical medium where two conductors are twisted together to reduce interference and crosstalk. The most defining practical trait is that it’s inexpensive and easy to install, making it a common choice for LANs. While there are shielded (and unshielded) variants, the key takeaway is that twisted pair is copper-based and low cost. The other statements mix in aspects of other media or incorrect concepts: fiber optic uses light to transmit data, which is a different type of cable; wireless media isn’t copper-based and isn’t a cable; and saying shielded copper has medium cost doesn’t capture the general, widely accepted characteristic of twisted pair as a cost-effective copper option.