A different connector is used in an Ethernet-based LAN environment. An RJ-45 connector for the unshielded twisted-pair (UTP) cable is the most common connector used to connect LAN interfaces. At each end of an RJ-45 cable, you should be able to see eight colored strips, or pins. An Ethernet cable uses pins 1, 2, 3, and 6 for transmitting and receiving data.
Two types of cables ..
can be used with Ethernet LAN interfaces:
Straight-through cables are used for:
Crossover cables are used for:
- A straight-through, or patch cable, with the order of the colored pins the same on each end of the cable
- A crossover cable, with pin 1 connected to pin 3, and pin 2 connected to pin 6
Straight-through cables are used for:
- Switch-to-router
- Switch-to-PC
- Hub-to-PC
- Hub-to-server
Crossover cables are used for:
- Switch-to-switch
- PC-to-PC
- Switch-to-hub
- Hub-to-hub
- Router-to-router
- Router-to-server
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