12.4.6 Check Your Understanding – CAPWAP Operation Answers

1. What IP versions does CAPWAP support?

  • IPv4 only
  • IPv6 only
  • IPv4 by default, but can configure IPv6
  • IPv6 by default, but can configure IPv4

Explanation: CAPWAP can operate either over IPv4 or IPv6, but uses IPv4 by default.

2. What UDP ports and IP protocols are used by CAPWAP for IPv4? (Choose three.)

  • 17
  • 136
  • 5246
  • 5247
  • 802.11

Explanation: CAPWAP for IPv4 uses IP protocol 17 in the frame header and UDP ports 5246 and 5247.

3. What UDP ports and IP protocols are used by CAPWAP for IPv6? (Choose three.)

  • 17
  • 136
  • 5246
  • 5247
  • 802.11

Explanation: CAPWAP for IPv6 uses IP protocol 136 in the frame header and UDP ports 5246 and 5247.

4. In the split MAC architecture for CAPWAP, which of the following are the responsibility of the AP? (Choose four.)

  • Authentication
  • Packet acknowledgments and retransmissions
  • Beacons and probe responses
  • Association and re-association of roaming clients
  • MAC layer data encryption and decryption
  • Termination of 802.11 traffic on a wired interface
  • Frame translation to other protocols
  • Frame queueing and packet prioritization

Explanation: The AP is responsible for the following in the split MAC architecture for CAPWAP:

  • Beacons and probe responses
  • Packet acknowledgments and retransmissions
  • Frame queueing and packet prioritization
  • MAC layer data encryption and decryption

5. In the split MAC architecture for CAPWAP, which of the following are the responsibility of the WLC? (Choose four.)

  • Authentication
  • Packet acknowledgments and retransmissions
  • Beacons and probe responses
  • Association and re-association of roaming clients
  • MAC layer data encryption and decryption
  • Termination of 802.11 traffic on a wired interface
  • Frame translation to other protocols
  • Frame queueing and packet prioritization

Explanation: The WLC is responsible for the following in the split MAC architecture for CAPWAP:

  • Authentication
  • Association and re-association of roaming clients
  • Frame translation to other protocols
  • Termination of 802.11 traffic on a wired interface

6. True or False: DTLS is enabled by default on the control and data CAPWAP tunnels.

  • True
  • False

Explanation: The correct answer is False: DTLS must be configured on the CAPWAP data tunnels, but is enabled by default on the CAPWAP control tunnel.

7. Which of the following statements are true about modes of operation for a FlexConnect AP? (Choose two.)

  • In connect mode, the WLC is unreachable and the AP switches local traffic and performs client authentication locally.
  • In standalone mode, the WLC is unreachable and the AP switches local traffic and performs client authentication locally.
  • In connect mode, the WLC is reachable and performs all its CAPWAP functions.
  • In standalone mode, the WLC is reachable and performs all its CAPWAP functions

Explanation: A FlexConnect AP can operate in the following modes:

  • In connect mode, the WLC is reachable and performs all its CAPWAP functions.
  • In standalone mode, the WLC is unreachable and the AP switches local traffic and performs client authentication locally.

 

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