Which categories are covered when discussing copper cabling performance in TIA-568-C.2?

• A. Cat7 and Cat8 only
• B. Cat3 and Cat4
• C. Cat8 and Cat9
• D. Cat5e, Cat6, Cat6A.

Answer: (D)

Copper cabling performance in TIA-568-C.2 is defined by the specific categories that describe the electrical performance of balanced copper links used in commercial building networks. The three categories covered are Category 5e, Category 6, and Category 6A. These categories set the bandwidth, testing requirements, and performance expectations for copper cabling installed in many enterprise environments, including the typical lengths and data rates supported.

Cat5e, Cat6, and Cat6A define an increasing level of performance—higher frequencies, better rejection of interference, and the ability to support higher data rates over standard 100-meter links. This standard does not include newer or older categories like Cat7 or Cat8 (which are defined in other standards), nor does it focus on Cat3 or Cat4, which are legacy categories not used in modern TIA-568-C.2 copper discussions.