In an Ethernet peer-to-peer network, which of the following cables is used to connect two computers, using RJ-45 connectors and Category-5 UTP cable?

Question

Options

• ALoopback
• BSerial
• CParallel
• DCrossover

• A
  2% (1)
• B
  3% (2)
• C
  5% (3)
• D
  91% (58)

Explanation

A crossover cable is used to directly connect two computers of the same type in a peer-to-peer Ethernet network - it works by swapping the transmit and receive wire pairs internally, so each machine's transmit lines connect to the other's receive lines. A loopback cable (A) redirects a device's own output back to its input for testing purposes, not for connecting two computers. Serial (B) and parallel (C) cables use entirely different connector types (DB-9/DB-25 and Centronics, respectively) and are legacy interfaces for devices like modems and printers, not Ethernet networking.

Memory tip: Think "same-to-same = cross" - when connecting two identical devices (computer-to-computer, switch-to-switch), you need a crossover cable to uncross the signals. A straight-through cable is used when connecting different device types (computer to switch/router).

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