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CompTIA

220-802 · Question #215

A customer wants to use VoIP phones without having to plug them into an electrical outlet. Which of the following switch features would a technician recommend?

The correct answer is C. PoE. PoE (Power over Ethernet) allows a network switch to deliver electrical power through standard Ethernet cables (Cat5 or higher) to connected devices. This eliminates the need for a separate power outlet or power adapter for devices like VoIP phones, wireless access points, and…

Networking

Question

A customer wants to use VoIP phones without having to plug them into an electrical outlet. Which of the following switch features would a technician recommend?

Options

  • AQoS
  • BGigabit
  • CPoE
  • DWake-on-LAN

How the community answered

(36 responses)
  • A
    3% (1)
  • B
    8% (3)
  • C
    86% (31)
  • D
    3% (1)

Explanation

PoE (Power over Ethernet) allows a network switch to deliver electrical power through standard Ethernet cables (Cat5 or higher) to connected devices. This eliminates the need for a separate power outlet or power adapter for devices like VoIP phones, wireless access points, and IP cameras. QoS (Quality of Service) prioritizes network traffic but does not supply power. Gigabit refers to data transfer speed. Wake-on-LAN remotely powers on computers but does not supply continuous power to peripherals.

Topics

#PoE#VoIP#network switch#power over ethernet

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