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CompTIA

N10-005 · Question #591

A VoIP line will MOST likely have which of the following connectors?

The correct answer is D. RJ-45. VoIP phones connect to the network via Ethernet and therefore use RJ-45 connectors, as they rely on IP networks rather than traditional analog phone lines.

Network implementation

Question

A VoIP line will MOST likely have which of the following connectors?

Options

  • ARJ-11
  • BDB-25
  • CBNC
  • DRJ-45

How the community answered

(19 responses)
  • A
    5% (1)
  • B
    5% (1)
  • D
    89% (17)

Why each option

VoIP phones connect to the network via Ethernet and therefore use RJ-45 connectors, as they rely on IP networks rather than traditional analog phone lines.

ARJ-11

RJ-11 is the connector used for traditional analog PSTN telephone lines and is not used for IP-based VoIP Ethernet connections.

BDB-25

DB-25 is a serial or parallel port connector used for legacy peripheral devices and has no role in telephony or VoIP.

CBNC

BNC connectors are used with coaxial cables in older 10Base-2 networks and video equipment, not in VoIP or Ethernet networking.

DRJ-45Correct

VoIP (Voice over IP) transmits voice as data packets over an IP network, which means VoIP phones and adapters connect to the network using standard Ethernet cabling terminated with RJ-45 connectors. This allows the devices to use standard network infrastructure including PoE switches that can power the phone over the same cable.

Concept tested: VoIP phone Ethernet RJ-45 connectivity

Source: https://learn.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/network-requirements/network-requirements

Topics

#VoIP#RJ-45#connectors#cabling

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