which type of cable has opposite pin assignments on each end of the cable

 A type of cable that has opposite pin assignments on each end is known as a "crossover cable." In a crossover cable, the transmit (TX) pins at one end are connected to the receive (RX) pins at the other end, and vice versa. This configuration is commonly used for connecting two similar devices directly, such as two computers or two network switches.

In contrast, a "straight-through cable" has the same pin assignments on both ends and is typically used to connect different types of devices, like a computer to a switch or a router. Straight-through cables are the standard cables used in most networking scenarios.

Here's a simplified comparison of pin assignments in a crossover cable:

  • Crossover Cable:

    • TX (Transmit) on one end connects to RX (Receive) on the other end.
    • RX (Receive) on one end connects to TX (Transmit) on the other end.

  • Straight-Through Cable:

    • TX (Transmit) on one end connects to TX (Transmit) on the other end.
    • RX (Receive) on one end connects to RX (Receive) on the other end.

Crossover cables are less common in modern networking setups due to the prevalence of auto-sensing ports in devices that can automatically detect and adjust for crossover or straight-through connections. However, they are still used in certain situations where direct device-to-device connections are needed without the use of a network switch or hub.

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