Practice Test Geeks(CWT) Certified Wireless Technician Practice Test
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CWT Antenna Systems & Site Surveys Flashcards

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

Read the first 6 CWT Antenna Systems & Site Surveys flashcards as text

  1. What is the difference between a predictive site survey and a physical (active/passive) site survey?

    Answer: A predictive survey uses software modeling to simulate RF propagation before installation; a physical survey measures actual signals on-site

    Predictive surveys use floor plans and RF modeling software to simulate coverage before deployment, while physical surveys measure real signal levels in the actual environment.

  2. Why is co-channel interference (CCI) a significant concern when deploying multiple access points using the same channel?

    Answer: APs on the same channel compete for air time, degrading throughput for all connected clients

    Co-channel interference occurs when multiple APs share the same channel, causing them to contend for medium access and reducing overall network throughput.

  3. What is the recommended minimum number of non-overlapping channels available in the 2.4 GHz band in the United States?

    Answer: 3

    In the US 2.4 GHz band, channels 1, 6, and 11 are the three non-overlapping channels that prevent adjacent channel interference between APs.

  4. A technician uses a heat map during a post-deployment survey and finds a coverage hole in one area. What is the BEST first corrective action?

    Answer: Adjust the transmit power or reposition the nearest AP to extend coverage into the gap

    Adjusting transmit power or repositioning the AP is the least disruptive and most cost-effective first step to eliminate a coverage hole identified on a heat map.

  5. What does EIRP (Effective Isotropic Radiated Power) represent and why is it regulated by the FCC?

    Answer: The total radiated power accounting for transmit power plus antenna gain minus cable losses

    EIRP is the equivalent power that an isotropic antenna would need to radiate to produce the same signal strength, calculated as TX power + antenna gain − cable losses.

  6. Which polarization configuration is typically used for indoor omnidirectional ceiling-mount access points?

    Answer: Vertical polarization

    Indoor ceiling-mount APs typically use vertically polarized omnidirectional antennas, which align with the vertical orientation of most client device antennas.