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Zorluk: KolayNetwork Cable Types and Connectors

A network technician needs to connect two legacy network switches directly to each other using a twisted-pair patch cable. The switches do not support Auto-MDIX. Which of the following cable pinout configurations must be used to establish a successful network link between these two identical devices?

  1. Terminate one end using the T568A standard and the opposite end using the T568B standard.Cevap
  2. B
    Terminate both ends of the cable using the T568B standard.
  3. C
    Terminate both ends of the cable using the T568A standard.
  4. D
    Terminate one end with a rollover pinout where all eight pin positions are completely reversed.

Cevap

Terminate one end using the T568A standard and the opposite end using the T568B standard.
A crossover cable is constructed by terminating one end with the T568A wiring standard and the other end with the T568B standard. This configuration crosses over the transmit and receive pairs (pins 1, 2, 3, and 6), enabling direct data communication between like devices such as legacy network switches that lack Auto-MDIX support.

Adım Adım Çözüm

1
Identify the device roles and Auto-MDIX status.
Connecting two identical switch interfaces directly without Auto-MDIX requires swapping the transmit (Tx) and receive (Rx) wire pairs.
When Auto-MDIX is unavailable, straight-through cables connect transmit pins to transmit pins, preventing communication.
2
Determine the appropriate cable type for switch-to-switch communication.
A crossover cable is required.
Crossover cables route the transmit pins on one end to the receive pins on the other end.
3
Select the correct wiring standard combination for a crossover cable.
Wiring one end as T568A and the other end as T568B transposes pins 1 and 3 (green/white with orange/white) and pins 2 and 6 (green with orange).
This specific pin swapping aligns the Tx and Rx pairs properly between identical Ethernet ports.

Anahtar Kavram

Crossover Cable Pinout (T568A to T568B)
Tahmini Süre:45s
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Network Cable Types and Connectors

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