Which of the following consists of one or more insulated twisted-pair wires encased in a plastic sheath?Group of answer choicesUTPSTPMMFSMF

Break Down the Problem

1. Identify the types of cables listed in the options.
2. Determine the characteristics of each type of cable, especially focusing on insulation and twisted-pair wiring.

Relevant Concepts

1. Unshielded Twisted Pair (UTP): Composed of pairs of wires that are twisted together to reduce electromagnetic interference, typically used in networking and telecommunications.
2. Shielded Twisted Pair (STP): Similar to UTP but with additional shielding to further reduce interference.
3. Multimode Fiber (MMF): Uses light to transmit data through fiber optic strands and does not consist of twisted wires.
4. Single-Mode Fiber (SMF): Also uses fiber optics with a much narrower core than MMF and does not contain twisted pairs.

Analysis and Detail

• UTP and STP are the only candidates that consist of one or more insulated twisted-pair wires. However, UTP is more commonly referenced in standard cabling used for network communications.
• MMF and SMF do not contain twisted pairs as they operate on a different transmission mechanism using light.

Verify and Summarize

• UTP and STP both qualify under the criteria of having insulated twisted-pair wires.
• UTP is the most recognized and widely used form.

Final Answer

The correct answer is UTP (Unshielded Twisted Pair).