Which of the following cables is used to connect a telephone key set to a wall outlet?
  1. 66-block
  2. Coaxial cable
  3. Satin cord
  4. TDR
Explanation
Answer - C - Satin cord is used to connect a telephone key set to a wall outlet.

Key Takeaway: Satin cord is a flat cable that has four untwisted 26-gauge wires, either RJ-11 or RJ-45 jacks. It is used to connect a wall outlet to a telephone set.
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