Practice Test Geeks(ACA) Aruba Certified Associate Certification Practice Test
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Wireless Technologies Flashcards

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

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  1. Which Aruba feature steers dual-band capable clients to the 5 GHz band instead of 2.4 GHz?

    Answer: Band Steering

    Band Steering encourages dual-band clients to connect to the less congested 5 GHz band by delaying probe responses on 2.4 GHz.

  2. In 802.11 wireless networking, what is the purpose of the RTS/CTS (Request to Send / Clear to Send) mechanism?

    Answer: To reserve the wireless medium and reduce collisions from hidden nodes

    RTS/CTS is a virtual carrier sensing mechanism that reserves the medium to reduce collisions caused by hidden node scenarios.

  3. What is the primary function of Aruba ClearPass in a wireless deployment?

    Answer: It provides network access control, authentication, and policy enforcement

    Aruba ClearPass is a policy management platform that provides AAA (Authentication, Authorization, Accounting) and NAC for wired and wireless networks.

  4. Which 802.11 QoS standard defines four access categories (Voice, Video, Best Effort, Background)?

    Answer: 802.11e / WMM

    802.11e (implemented as WMM — Wi-Fi Multimedia) defines four access categories with different EDCA parameters to prioritize time-sensitive traffic.

  5. What does the term 'channel bonding' mean in the context of 802.11n and later standards?

    Answer: Aggregating two adjacent 20 MHz channels into a 40 MHz or wider channel for higher throughput

    Channel bonding combines adjacent 20 MHz channels into 40, 80, or 160 MHz channels to increase data throughput.

  6. In Aruba's role-based access control, when is a firewall policy applied to a wireless client?

    Answer: When the client is assigned a user role after authentication

    Aruba applies per-user firewall policies based on the role assigned to the client after authentication, regardless of SSID or band.

  7. Which wireless deployment mode places Aruba APs in tunneled mode, forwarding all client traffic to the controller for policy enforcement?

    Answer: Tunnel mode

    In tunnel mode, all client traffic is encapsulated and forwarded to the Mobility Controller, where firewall policies and VLAN assignment are applied.