What does a Cisco Unified Wireless IP Phone 7921G deployment require（）？

Which antenna generally has the narrowest first Fresnel zone in both the horizontal and verticalplanes？（）

According to the following statement， can you tell me which term is described？（）It is the air return for an air conditioned system. In most buildings， the area above a drop ceiling orunder a raised floor is used as the air return （source of air） for the air conditioning. Those dropceiling and raised floors are also where wire is often installed. If wire and cable is installed in a dropceiling or raised floor， it is out of sight. If that cable were burning， it would give off toxic fumes.These would be fed to the rest of the building by the air conditioner. As a result， people could beinjured even though they are a long way from the fire.

Which three formats can be used to import floor maps in Cisco WCS v5.2？（）

By how much is a signal’s strength reduced when the signal passes through an object thatintroduces 3 dB of attenuation？（）

When surveying for VoWLAN， which power level should you base the access point coverage designon？（）

What does a broad-spectrum interferer lower？（）

Which class of Cisco access points operate under IEEE 802.3af power？（）

Which two Cisco antennas provide better isolation from RF sources that might be located behindthe antennas？（）

For an active Cisco Unified Wireless IP Phone 7921G 5 GHz site survey， what are the mostappropriate client test settings to use with the AirMagnet site survey tool？（）