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Wireless & Mobile Technologies Flashcards

7 cards from real IT and Technology 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 wireless attack involves creating a fraudulent access point with the same SSID as a legitimate network to intercept traffic?

    Answer: Evil Twin attack

    An Evil Twin attack deploys a rogue access point mimicking a trusted network's SSID to perform a man-in-the-middle attack and capture victim traffic.

  2. What WPA3 feature provides perfect forward secrecy by replacing the Pre-Shared Key handshake?

    Answer: Simultaneous Authentication of Equals (SAE)

    WPA3's SAE (Simultaneous Authentication of Equals) replaces PSK with a Dragonfly handshake that provides perfect forward secrecy, preventing offline dictionary attacks on captured handshakes.

  3. What does LTE stand for in mobile broadband communications?

    Answer: Long Term Evolution

    LTE (Long Term Evolution) is the 4G wireless broadband standard for mobile devices, evolving from 3G UMTS/HSPA technology.

  4. Which wireless technology uses adaptive frequency-hopping spread spectrum (AFHS) across 79 channels to minimize interference?

    Answer: Bluetooth Classic

    Bluetooth Classic uses adaptive frequency-hopping spread spectrum, hopping 1,600 times per second across 79 channels in the 2.4 GHz band to avoid persistent interference.

  5. What is the primary function of a Wireless LAN Controller (WLC) in an enterprise network?

    Answer: Centrally manage and configure multiple access points

    A WLC centralizes management of lightweight access points, handling configuration, firmware updates, roaming, and policy enforcement across the enterprise wireless infrastructure.

  6. Which mode allows two Wi-Fi devices to communicate directly without going through an access point?

    Answer: Wi-Fi Direct (ad-hoc mode)

    Wi-Fi Direct (and the legacy ad-hoc mode) enables peer-to-peer wireless connections between devices without requiring an access point or router.

  7. What is the purpose of CSMA/CA in IEEE 802.11 wireless networks?

    Answer: Avoid packet collisions on the shared wireless medium

    CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) reduces collisions by sensing the channel before transmitting and using random backoff timers when the medium is busy.