1
Q
Category 1
A
- UTP transmission rate: up to 4 Mbps
- two pairs of twisted copper wire
- rated for voice grade (not data)
- Oldest UTP wiring
- Used for PSTN
2
Q
Category 2
A
- UTP transmission rate: up to 4 Mbps
- four pairs of twisted copper wire
- suitable for data communications
3
Q
Category 3
A
- UTP transmission rate: up to 10 Mbps
- four pairs of twisted copper wire
- three twists per foot
- most widely used standard since the mid-1980s
4
Q
Category 4
A
- UTP transmission rate: up to 16 Mbps
- four pairs of twisted copper wire
- designed with token ring networks in mind
5
Q
Category 5
A
- UTP transmission rate: up to 100 Mbps
- four pairs of twisted copper wire terminated by RJ-45 connectors
- can support frequencies of up to 100 MHz
- used for ATM, Token Ring, 1000Base-T, 100Base-T, and 10Base-T networking
6
Q
Category 5e
A
- UTP transmission rate: up to 1000 Mbps (1 Gbps)
- ‘e’ stands for enhanced
7
Q
Category 6
A
- UTP transmission rate: up to 1000 Mbps (1 Gbps)
8
Q
Category 6e
A
- UTP transmission rate: up to 1000 Mbps (1 Gbps)
9
Q
Category 7
A
- UTP transmission rate: up to 10 Gbps
