Practice Test Geeks(CWS) Certified Wireless Specialist Practice Test
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CWS Network Performance & Optimization Flashcards

6 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 6 CWS Network Performance & Optimization flashcards as text

  1. What does the term 'airtime fairness' refer to in WLAN management?

    Answer: Allocating equal airtime to each client rather than equal data rate, preventing slow clients from monopolizing the channel

    Airtime fairness allocates equal channel time to each client, preventing older or slower devices from degrading throughput for faster clients.

  2. Which metric best indicates whether a wireless channel is congested from competing networks?

    Answer: Channel utilization percentage

    Channel utilization percentage shows how much of the available airtime is being consumed, including by neighboring networks on the same channel.

  3. What is MU-MIMO and how does it improve WLAN performance?

    Answer: Multi-User Multiple Input Multiple Output — allows an AP to transmit to multiple clients simultaneously, increasing throughput

    MU-MIMO allows a single AP to communicate with multiple clients at the same time using spatial streams, significantly improving overall network throughput.

  4. A network shows high retry rates on 2.4 GHz. What is the most effective optimization step?

    Answer: Identify and mitigate interference sources, and consider migrating clients to 5 GHz

    High retry rates signal poor signal quality or interference; resolving interference and moving clients to 5 GHz reduces retries and improves reliability.

  5. What is the purpose of the Transmit Power Control (TPC) feature in enterprise WLANs?

    Answer: To dynamically adjust AP transmit power to optimize coverage and reduce co-channel interference

    TPC dynamically reduces AP transmit power when neighboring APs provide sufficient coverage, minimizing co-channel interference.

  6. What does the term 'throughput' measure in a wireless network?

    Answer: The actual data transfer rate achieved over the wireless medium under real conditions

    Throughput is the real-world data transfer rate, which is always lower than the theoretical PHY rate due to overhead, retransmissions, and contention.