Practice Test Geeks(CWS) Certified Wireless Specialist Practice Test
← All CWS Flashcard Decks

Wireless Technologies & Network Fundamentals Flashcards

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

Read the first 7 Wireless Technologies & Network Fundamentals flashcards as text

  1. In Wi-Fi 6E, which new spectrum is opened for WLAN use compared to Wi-Fi 6?

    Answer: 6 GHz band

    Wi-Fi 6E extends 802.11ax operation into the 6 GHz band, providing up to 1,200 MHz of additional spectrum in the US.

  2. What is the function of a wireless LAN controller (WLC) in a centralized WLAN architecture?

    Answer: Manages AP configuration, RF policies, and client roaming centrally

    A WLC centralizes management of APs, including firmware updates, RF channel/power settings, security policies, and seamless client roaming.

  3. Which term describes the phenomenon where a wireless signal arrives at a receiver via multiple paths, causing constructive or destructive interference?

    Answer: Multipath

    Multipath occurs when a signal reflects off surfaces and arrives at the receiver via multiple paths, potentially causing fading or interference.

  4. What does the dBi unit measure when describing antenna gain?

    Answer: Gain relative to an isotropic radiator

    dBi expresses antenna gain relative to a theoretical isotropic radiator that radiates equally in all directions.

  5. A technician notices high retry rates on a 2.4 GHz network in a dense apartment building. What is the most likely root cause?

    Answer: Co-channel interference from neighboring networks

    In dense environments, multiple networks sharing the same 2.4 GHz channels create co-channel interference, leading to high retry rates and degraded performance.

  6. Which 802.11 power-save mechanism does Wi-Fi 6 introduce to improve efficiency for IoT and battery-powered devices?

    Answer: TWT (Target Wake Time)

    TWT (Target Wake Time), introduced in 802.11ax, allows an AP to schedule specific wake times for clients, dramatically reducing power consumption.

  7. What is the effective data rate impact when a 802.11n client connects using a 40 MHz channel compared to a 20 MHz channel under ideal conditions?

    Answer: Approximately double the throughput

    Doubling the channel width from 20 MHz to 40 MHz approximately doubles the available data rate by fitting twice as many subcarriers.