CAT6A is fast becoming the lowest cost effective solution as it is seen as a future proof cable system.
CAT6 cabling provides many advantages and benefits over CAT5E cabling infrastructure.When CAT6 was first introduced it was approximately 50% more expensive than CAT5E, which made it cost prohibitive for many installations.
CAT5E, As of today, it’s the most common type of cabling found in modern homes and offices for Ethernet purposes.
Category 3 or CAT3 standard was used heavily in the early 90’s for wiring offices and homes. It’s still used in two-line phone configurations.