What are the main contents of the CAPWAP protocol? (Multiple choice)

Question

Options

• AAutomatic discovery of AC by AP and operation and maintenance of AP&AC state machine
• BAC manages APs and distributes service configurations
• CSTA data is encapsulated in CAPWAP tunnel for forwarding
• DDefines the transmission rate of the Mac layer and the physical layer

• A
  78% (35)
• D
  22% (10)

Explanation

CAPWAP (Control and Provisioning of Wireless Access Points) is a management protocol governing the relationship between Access Points (APs) and Access Controllers (ACs), making A, B, and C all correct core functions. A is correct because CAPWAP explicitly defines the AP discovery process (via broadcast, DHCP option 43, or DNS) and the state machine governing AP-AC lifecycle (discovery, join, configure, run, reset). B is correct because centralized AP management and configuration distribution - pushing SSIDs, QoS policies, and security settings from AC to AP - is a primary CAPWAP function. C is correct because CAPWAP supports a tunnel mode where STA (client) data frames are encapsulated in CAPWAP data tunnels and forwarded to the AC for centralized switching.

D is wrong because transmission rates at the MAC and physical layer are defined by IEEE 802.11 standards (e.g., 802.11n/ac/ax), not CAPWAP - CAPWAP operates above those layers to manage and control the APs, not to define their radio characteristics.

Memory tip: Think of CAPWAP as the "manager-employee contract" between AC and AP - it covers hiring (discovery), supervising (state machine), giving instructions (config distribution), and routing work (data tunneling). Anything about radio signal physics or data rates belongs to 802.11, not CAPWAP.

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