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RCDD · Question #259

The MOST common medium used to provide service to the access point (AP) is ________ cable.

The correct answer is D. Balanced twisted pair. Balanced twisted pair (UTP) cable is the most common medium to an access point because it simultaneously delivers Ethernet data and Power over Ethernet to power the device.

General Cable and Media

Question

The MOST common medium used to provide service to the access point (AP) is ________ cable.

Options

  • ASinglemode optical fiber
  • BMultimode optical fiber
  • CUnbalanced twisted pair
  • DBalanced twisted pair

How the community answered

(30 responses)
  • A
    13% (4)
  • B
    7% (2)
  • C
    3% (1)
  • D
    77% (23)

Why each option

Balanced twisted pair (UTP) cable is the most common medium to an access point because it simultaneously delivers Ethernet data and Power over Ethernet to power the device.

ASinglemode optical fiber

Singlemode optical fiber is a backbone medium suited for long distances but cannot carry PoE, making it impractical as the primary service cable to an AP.

BMultimode optical fiber

Multimode optical fiber also lacks the ability to deliver PoE power, so it is not commonly used as the direct service medium to an AP despite supporting adequate bandwidth.

CUnbalanced twisted pair

Unbalanced twisted pair (coaxial) does not conform to IEEE 802.3 Ethernet or PoE standards and is not used to connect access points in structured cabling systems.

DBalanced twisted pairCorrect

Balanced twisted pair cable - typically Category 5e, 6, or 6A UTP - is the dominant medium for AP connectivity in enterprise and commercial deployments. It satisfies IEEE 802.3af/at/bt PoE standards, delivering both data and power over the same cable and eliminating the need for a separate electrical outlet at the AP location. This dual capability, combined with wide infrastructure support and cost efficiency, makes it the most common choice.

Concept tested: Access point cabling medium selection and PoE

Source: https://standards.ieee.org/ieee/802.3at/4553/

Topics

#wireless access point#balanced twisted pair#cable selection#horizontal cabling

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