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H12-311_V3.0 · Question #108

For the CAPWAP protocol, which of the following description is wrong?

The correct answer is B. Transmission protocol between thin AP and wireless client. Option B is wrong because CAPWAP (Control And Provisioning of Wireless Access Points) operates exclusively between the Access Controller (AC) and thin APs -- communication between a thin AP and a wireless client uses the 802.11 (Wi-Fi) standard, not CAPWAP. Options A, C, and D…

WLAN Basic Knowledge

Question

For the CAPWAP protocol, which of the following description is wrong?

Options

  • ATransmission protocol between AC and thin AP
  • BTransmission protocol between thin AP and wireless client
  • CDeveloped by the CAPWAP Working Group
  • DThe formulation of the CAPWAP protocol draws on the useful features of other protocols

How the community answered

(59 responses)
  • A
    5% (3)
  • B
    83% (49)
  • C
    3% (2)
  • D
    8% (5)

Explanation

Option B is wrong because CAPWAP (Control And Provisioning of Wireless Access Points) operates exclusively between the Access Controller (AC) and thin APs -- communication between a thin AP and a wireless client uses the 802.11 (Wi-Fi) standard, not CAPWAP. Options A, C, and D are all correct: CAPWAP is indeed the tunnel protocol between AC and thin AP (A), it was developed by the IETF CAPWAP Working Group (C), and its design drew on useful features from predecessor protocols such as LWAPP and CTP (D). Memory tip: the full name, "Control And Provisioning of Wireless Access Points," tells you exactly what it manages -- access points from a controller -- so any answer placing it between an AP and a client device is immediately suspect.

Topics

#CAPWAP protocol#AC-AP communication#Thin AP#WLAN architecture

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