Practice Test Geeks(ACMA) Aruba Certified Mobility Associate Practice Test
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WLAN Design Flashcards

7 cards from real ACMA 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 Design flashcards as text

  1. What is the significance of the 'overlap' percentage between adjacent AP coverage areas in WLAN design?

    Answer: 10–15% overlap ensures seamless roaming without excessive interference

    A 10–15% overlap between adjacent cells ensures clients can roam seamlessly while minimizing co-channel interference.

  2. A warehouse deployment requires APs to cover very long aisles between metal shelving. Which antenna configuration is most effective?

    Answer: Directional patch antennas mounted at aisle ends pointing down each aisle

    Directional patch antennas aimed down aisles focus RF energy where it's needed and reduce interference between parallel aisles.

  3. Which 802.11 amendment introduced the concept of BSS Coloring to reduce co-channel interference in dense deployments?

    Answer: 802.11ax (Wi-Fi 6)

    802.11ax (Wi-Fi 6) introduced BSS Coloring, which allows devices to differentiate between overlapping BSSs and reduce unnecessary deferrals.

  4. What is the purpose of conducting a passive site survey versus an active site survey?

    Answer: Passive surveys listen to existing RF environment; active surveys use a test AP to measure coverage

    Passive surveys capture existing RF signals and interference without transmitting, while active surveys use a test AP to measure coverage and performance.

  5. In a high-density stadium deployment, why are APs typically mounted under seats rather than on the ceiling?

    Answer: Under-seat mounting provides shorter range and better per-user capacity

    Under-seat AP placement reduces cell size and focuses coverage on individual seating areas, dramatically improving per-user capacity in dense crowds.

  6. What does EIRP stand for, and why is it important in WLAN design?

    Answer: Effective Isotropic Radiated Power — the total power an antenna system emits in a specific direction

    EIRP (Effective Isotropic Radiated Power) combines transmitter output power and antenna gain, and regulatory bodies set maximum EIRP limits for WLAN operation.

  7. Which roaming protocol reduces re-authentication delay for wireless clients moving between APs in an Aruba network?

    Answer: 802.11r (Fast BSS Transition)

    802.11r (Fast BSS Transition) enables clients to pre-authenticate with the target AP before roaming, minimizing handoff delay.