According to the Difference Between website, there are two types of twisted pair cabling, STP and UTP. STP stands for Shielded Twisted Pair and UTP stands for Unshielded Twisted Pair.
The only difference between the STP and UTP cable is the additional shielding material used in STP cables. The shielding covers the full length of the cable and protects it from any external interference.
Due to the additional material used in a STP cable, it costs more than the UTP cable.
While using STP cable will yield maximum bandwidth despite external conditions, the shielding makes the cable heavier and more difficult to bend.
UTP cable typically is used in homes and offices. Some large businesses also use the cable because it is cheaper. Large companies that require maximum bandwidth typically use STP cable. STP cable is used outside to better deal with the elements and equipment that may degrade bandwidth quality.
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