Examkin

Soru

Zorluk: OrtaNetwork Cable Types and Connectors

A field technician is connecting two legacy network switches that do not support Auto-MDIX. The technician fabricates a Category 6 patch cable by terminating both ends using the T568B wiring standard. When plugged in, the network link lights fail to illuminate and traffic is not passed. Which of the following actions will resolve the connectivity issue?

  1. Re-terminate one end of the patch cable using the T568A wiring standard to form a crossover cable.Cevap
  2. B
    Re-terminate both ends of the patch cable using the T568A wiring standard to ensure proper pin alignment.
  3. C
    Replace the twisted-pair cable with a plenum-rated coaxial cable using F-type compression connectors.
  4. D
    Swap the position of the blue and brown wire pairs while keeping the orange and green pairs identical on both ends.

Cevap

Re-terminate one end of the patch cable using the T568A wiring standard to form a crossover cable.
When connecting two network switches directly together without Auto-MDIX capability, a crossover cable is required to connect the transmit pins of one port to the receive pins of the other. Wiring one end using T568A and the opposite end using T568B swaps the transmit and receive pairs (pins 1, 2, 3, and 6), successfully creating a functional crossover cable.

Adım Adım Çözüm

1
Identify the device types and port requirements.
Connecting two like devices (switch to switch) on legacy hardware without Auto-MDIX requires an Ethernet crossover cable.
Straight-through cables connect unlike devices (e.g., computer to switch), while crossover cables swap transmit (Tx) and receive (Rx) signals between like devices.
2
Evaluate the current cabling configuration.
The technician wired both ends using T568B, creating a straight-through cable.
Using the same pinout standard (T568B/T568B or T568A/T568A) on both ends results in a straight-through pinout.
3
Determine the necessary termination modification.
Re-terminating one end with T568A while leaving the other as T568B creates a crossover cable.
T568A and T568B swap the green (pins 1 & 2 in A, 3 & 6 in B) and orange (pins 3 & 6 in A, 1 & 2 in B) pairs, properly aligning transmit pins to receive pins across the switches.

Anahtar Kavram

T568A vs T568B Crossover Cable Configuration
Tahmini Süre:1m 30s
Bu soruyu puanla

Konular

Network Cable Types and Connectors

Bu konudan daha fazla soru