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800-150 · Question #31

Which cable type should be used when installing replacement hardware and connecting two devices of the same type, like two DTEs or two DCEs?

The correct answer is D. RJ-45 Ethernet crossover patch cable. When connecting two devices of the same type (e.g., two routers, two switches, or two DTEs), a crossover cable is required. This cable swaps the transmit and receive pairs to allow direct communication between devices without the need for an intermediate device like a switch…

Field Installation and Replacement

Question

Which cable type should be used when installing replacement hardware and connecting two devices of the same type, like two DTEs or two DCEs?

Options

  • AUSB Type A to Type B cable
  • BRolled RJ-45 to RJ-45 console cable
  • CRJ-45 Ethernet straight-through patch cable
  • DRJ-45 Ethernet crossover patch cable

How the community answered

(45 responses)
  • A
    2% (1)
  • B
    4% (2)
  • D
    93% (42)

Explanation

When connecting two devices of the same type (e.g., two routers, two switches, or two DTEs), a crossover cable is required. This cable swaps the transmit and receive pairs to allow direct communication between devices without the need for an intermediate device like a switch. Straight-through cables are used to connect different types of devices (e.g., PC to switch). Rolled cables are used for console access. USB Type A to B cables are typically used for peripheral device connections, not networking.

Topics

#crossover cable#DTE DCE connection#cable type selection#network cabling

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