Which of the following is the best explanation A The energy radiated by

Which of the following is the best explanation a the

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Which of the following is the best explanation?
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A. The energy radiated by flooring materials that causes interference in the 2.4 GHz and 5 GHz bands. B. The noise caused by elevators, microwave ovens, and video transmitters. C. The RF energy that exists in the environment from intentional and unintentional RF radiators that forms the baseline above which the Intentional signal of your WLAN must exist. D. The extra energy radiated by access points and client devices beyond that intended for the signal. Answer: C Explanation: Reference - floor-dynamic-range/ 5.You recently purchased four laptops containing dual-band 802.11ac adapters. The laptops can connect to your 2.4 GHz network, but they cannot connect to the 5 GHz network. The laptops do not show the 5 GHz SSIDs, which are different than the 2.4 GHz SSIDs. Existing devices can connect to the 5 GHz SSIDs with no difficulty. What is the likely problem? A. Interference from non-Wi-Fi sources B. Faulty drivers C. DoS attack D. Interference from other WLANs Answer: B 6.You are attempting to explain RF shadow and how it can cause lack of coverage. What common building item frequently causes RF shadow and must be accounted for in coverage plans? A. Wooden doors B. Carpeted floors
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C. Elevators D. Cubicle partitions Answer: C 7.You administer a small WLAN with nine access points. As a small business, you do not run a RADIUS server and use WPA2-Personal for security. Recently, you changed the passphrase for WPA2- Personal in all APs and clients. Several users are now reporting the inability to connect to the network at times and it is constrained to one area of the building. When using a WLAN scanner, you see that the AP covering that area is online and has a strong signal. No other changes have been made to the environment and all access points are the same model. What is the likely problem? A. The AP that covers the problem area requires a firmware update B. The clients are improperly configured C. The AP that covers the problem area has failed D. The AP that covers the problem area is improperly configured
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