The type of cabling that you should use will depend on your specific needs and requirements. If you have an older Ethernet network, Category 5 (CAT5) cabling may be sufficient and can transmit data at speeds of up to 100 Mbps. For newer Ethernet networks, Category 5e (CAT5e) cabling, which can transmit data at speeds of up to 1000Mbps (1 Gbps), is commonly used. For even higher speeds, Category 6 (CAT6) cabling, which can transmit data at speeds of up to 10 Gbps, and Category 6A (CAT6A) which can transmit up to 10 Gbps over longer distances, may be more suitable. For data centers and other high-performance networking environments, Category 7 (CAT7) and Category 7A (CAT7A) cabling, which support speeds of up to 40 Gbps and 100 Gbps respectively, are the best choice. It is always recommended to consult with an experienced professional to determine the best type of UTP cabling for your specific needs.