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CWNA-108 – Certified Wireless Network Administrator

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Showing 4–6 of 10 questions

Question 4

A WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB loss. If the cable is connected to an antenna with 9dBi gain, what is the EIRP at the antenna element?

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    26 dBm
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    13 dBm
  • ○

    23 dBm
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    10 dBm
Question 5

When compared with legacy Power Save mode, how does VHT TXOP power save improve battery life for devices on a WLAN?

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    Legacy Power Save mode was removed in the 802.11ac amendment.
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    VHT TXOP power save allows the WLAN transceiver to disable more components when in a low power state.
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    VHT TXOP power save uses the partial AID in the preamble to allow clients to identify frames targeted for them.
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    VHT TXOP power save allows stations to enter sleep mode and legacy Power Save does not.
Question 6

You are troubleshooting a client problem with a 2.4 GHz WLAN connection. The client is experiencing surprisingly low data rates during the work day. You analyze the workspace outside of business hours and detect a strong signal with a typical noise floor at the client location. During working hours, the user works with a laptop in the area and uses an external USB hard drive for continuous data access. The user also states that the laptop works as expected on her home network. The user working approximately 8 feet away from this client experiences no problems. Based on this information, what is the likely cause of the problem?

Select an option, then click Submit answer.

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    The AP is overloaded during the work day
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    The drivers in the laptop are corrupt
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    The laptop has a failing wireless adapter
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    The external hard drive is USB 3.0 and is causing a significant increase in the noise floor when in use