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300-425 · Question #164

An engineer is upgrading the legacy APs to 802.11ac Wave 2 capable APs. The existing gigabit uplinked switches provide 802.3at. Which switch limitation is a concern?

The correct answer is D. output power. The concern with existing gigabit uplinked switches providing 802.3at is the output power limitation. 802.11ac Wave 2 APs may require more power than what 802.3at can deliver, especially for features like Multi-User Multiple Input Multiple Output (MU-MIMO).

Wired and Wireless Infrastructure

Question

An engineer is upgrading the legacy APs to 802.11ac Wave 2 capable APs. The existing gigabit uplinked switches provide 802.3at. Which switch limitation is a concern?

Options

  • Ainterface throughput
  • Bhigh availability
  • Ccollision domains
  • Doutput power

How the community answered

(55 responses)
  • A
    13% (7)
  • B
    4% (2)
  • C
    7% (4)
  • D
    76% (42)

Explanation

The concern with existing gigabit uplinked switches providing 802.3at is the output power limitation. 802.11ac Wave 2 APs may require more power than what 802.3at can deliver, especially for features like Multi-User Multiple Input Multiple Output (MU-MIMO).

Topics

#802.11ac Wave 2#802.3at PoE#power budget#AP upgrade

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