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WLAN Architectures and Concepts Flashcards

7 cards from real Cisco CCNA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 WLAN Architectures and Concepts flashcards as text

  1. A network engineer configures a WLC to use local mode for APs in the headquarters building. What is a key characteristic of local mode?

    Answer: All client data is tunneled through CAPWAP to the WLC for centralized switching

    In local mode, all client data frames are encapsulated in CAPWAP tunnels and sent to the WLC, which then forwards them to the appropriate network.

  2. What is the primary role of a WLAN Distribution System (DS)?

    Answer: To interconnect multiple BSSs to form an ESS via a wired backbone

    The Distribution System interconnects multiple access points (BSSs) using a wired backbone, forming an Extended Service Set (ESS) for seamless roaming.

  3. Which 802.11 band characteristic makes 5 GHz preferable to 2.4 GHz in dense environments?

    Answer: 5 GHz has more non-overlapping channels and typically less interference

    The 5 GHz band offers up to 24 non-overlapping channels (in the US) compared to only 3 in 2.4 GHz, reducing co-channel interference in dense deployments.

  4. In a Cisco WLC deployment, what happens during the CAPWAP discovery process when an AP first boots?

    Answer: The AP broadcasts/multicasts a CAPWAP Discovery Request and the WLC responds with a Discovery Response

    An AP sends CAPWAP Discovery Requests via broadcast, multicast, or preconfigured unicast to locate a WLC, which replies with a Discovery Response.

  5. Which wireless security protocol replaced TKIP with CCMP/AES as its mandatory encryption method?

    Answer: WPA2

    WPA2 mandates CCMP with AES encryption, replacing the weaker TKIP used in WPA and making it significantly more secure.

  6. What is the function of the 802.11 Probe Request frame?

    Answer: Sent by a client to actively discover available wireless networks

    A Probe Request is sent by wireless clients to actively scan for available SSIDs, either broadcasting to find all networks or targeting a specific SSID.

  7. In a Cisco WLC environment, which interface type is used to manage the WLC itself and is required for AP CAPWAP connections?

    Answer: Management Interface

    The Management Interface is the primary interface used for WLC administration, AP CAPWAP tunnel termination, and network management traffic.