Commonly used types of UTP cabling.

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 Commonly used types of UTP cabling are as follows:
• Category 1—Used for telephone communications. Not suitable for transmitting data.
• Category 2—Capable of transmitting data at speeds up to 4 megabits per second (Mbps).
• Category 3—Used in 10 BASE-T networks. Can transmit data at speeds up to 10 Mbps.
• Category 4—Used in Token Ring networks. Can transmit data at speeds up to 16 Mbps.
• Category 5—Can transmit data at speeds up to 100 Mbps.
• Category 5e —Used in networks running at speeds up to 1000 Mbps (1 gigabit per          second [Gbps]).
• Category 6—Typically, Category 6 cable consists of four pairs of 24 American Wire 
   Gauge (AWG) copper wires. Category 6 cable is currently the fastest standard for UTP. 

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