What are the main components used in Unshielded Twisted Pair (UTP) and Shielded Twisted Pair (STP) cables?

Fiber optic strands and metallic shielding

Twisted pairs of copper wires and shielding

Single copper wire and plastic insulation

Optical fibers and conductive layers

Both Unshielded Twisted Pair (UTP) and Shielded Twisted Pair (STP) cables use twisted pairs of copper wires to transmit data.

The primary difference is that STP cables have additional shielding around the wires to protect against electromagnetic interference

Whereas UTP cables do not have this extra shielding