Practice Test Geeks(CWS) Certified Wireless Specialist Practice Test
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Quality Control & Process Improvement 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 Quality Control & Process Improvement flashcards as text

  1. During a quality review, a wireless controller log shows frequent client de-authentications on a specific AP. The FIRST variable to investigate is:

    Answer: RF environment changes or excessive interference near that AP

    Frequent de-authentications isolated to one AP typically indicate RF degradation, interference, or physical connectivity issues specific to that unit.

  2. The Plan-Do-Check-Act (PDCA) cycle is applied to wireless deployments primarily to:

    Answer: Drive iterative improvement in installation and operations processes

    PDCA provides a repeating cycle of planning changes, implementing them, measuring results, and acting on findings to continuously improve processes.

  3. Which 802.11 feature, when enabled, helps reduce co-channel interference by preventing nearby APs from transmitting simultaneously?

    Answer: CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)

    CSMA/CA is the core medium access mechanism that has devices listen before transmitting to reduce collisions on shared channels.

  4. A CWS technician is reviewing installation photos as part of QC documentation. What installation issue is BEST identified through photo documentation?

    Answer: Improper AP mounting angle or obstructed antenna

    Visual photo documentation captures physical installation quality, including antenna orientation, mounting compliance, and cable management.

  5. In a QC process, a 'control chart' is used to:

    Answer: Monitor a process variable over time to detect trends or out-of-control conditions

    Control charts display data points over time with upper and lower control limits to identify when a process is drifting or unstable.

  6. When a wireless installation fails a QC acceptance test, the CORRECT action per project quality management standards is to:

    Answer: Document the failure, identify the root cause, remediate, and re-test before sign-off

    Proper QC practice requires documenting failures, fixing the underlying cause, and successfully re-testing before obtaining customer acceptance.

  7. Which measurement indicates the amount of usable bandwidth available to clients at a specific location and is the BEST end-to-end QC metric?

    Answer: Throughput (Mbps) measured via active iperf or similar testing

    Active throughput testing with tools like iperf measures actual usable bandwidth from client to server, representing real user experience.