CompTIA Network+

Answer: A - Jack should use the CAT 5 UTP cabling which runs at 100 Mbps.

Key Takeaway: Category 5 cable is a twisted pair, high-signal-integrity cable type, often referred to as CAT 5. CAT 5 cable includes twisted pairs in a single cable jacket. This use of balanced lines helps preserve a high signal-to-noise ratio, despite interference from both external sources and other pairs. It is most commonly used for 100 Mb it/s networks. Thicknet and CAT 3 UTP run at 10Mbps,so they cannot be used. Although Fiber optic can run at 100 Mbps, it cannot be used with 100BaseT. Thicknet and CAT 3 UTP do not support 100BaseT networks.