What type of wire is used in Shielded Twisted Pair (STP) cables?

The correct answer identifies that Shielded Twisted Pair (STP) cables can be constructed using either stranded or solid wire. This versatility is significant as it allows for various applications depending on the specific needs of the installation.

Stranded wire consists of multiple small strands of copper twisted together, making it more flexible and ideal for applications where the cable may need to be moved or frequently connected and disconnected. This flexibility is beneficial in environments such as patch panels or wiring closets.

Solid wire, on the other hand, uses a single solid core of copper. It is less flexible but offers superior performance over longer distances, making it suitable for permanent installations where the cable will not be moved frequently.

By supporting both types of wire, STP cables can cater to different installation scenarios, providing shielding against electromagnetic interference while offering options that balance flexibility and performance.