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Difficulty: MediumNetwork Cable Types and Connectors

A network technician is installing a backbone link to connect network switches located in two separate buildings 400 meters (1,312 feet) apart. The cable route runs near heavy industrial motors, requiring complete immunity to electromagnetic interference (EMI). Which of the following components should the technician select for this deployment? (Select TWO).

  1. Single-mode fiber (SMF) optic cablingAnswer
  2. LC (Lucent Connector) connectorsAnswer
  3. C
    Category 6a UTP cable terminated with T568A on one end and T568B on the other
  4. D
    RG-6 coaxial cabling terminated with F-type threaded connectors

Answer

The technician should select single-mode fiber (SMF) optic cabling and LC (Lucent Connector) connectors.
Single-mode fiber (SMF) optic cabling easily spans distances greater than 100 meters and utilizes light pulses, eliminating signal degradation from high EMI. LC (Lucent Connector) connectors are the standard small-form-factor fiber optic connectors designed to plug into optical transceiver ports on switches.

Step-by-Step Solution

1
Evaluate distance and EMI resistance constraints
Distance requirement is 400 meters, which exceeds the 100-meter maximum limit of copper Ethernet cabling, and immunity to EMI is required.
Twisted-pair copper cables attenuate over 100 meters and are vulnerable to industrial electrical noise.
2
Select appropriate cable medium
Single-mode fiber (SMF) optic cable is selected.
SMF uses laser light to carry signals across long distances without attenuation or susceptibility to electrical interference.
3
Select corresponding connector type
LC fiber connectors are selected.
LC connectors are small-form-factor fiber connectors that fit into switch SFP/SFP+ transceiver modules.

Key Concept

Fiber optic cable and connector selection for long-distance high-speed networking
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Topics

Network Cable Types and Connectors

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