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？（）

What should be done if Cisco Spectrum Expert Wi-Fi reports a channel utilization of 40 percent onchannel 36， from a source outside of the site？（）

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

Which two methods can be used to prevent or reduce RFI from colocated directional antennas（）

Which three device types are identified by Cisco Spectrum Expert Wi-Fi finding an Avg PulseDuration parameter？（）

When planning for voice deployments with the Cisco Unified Wireless IP Phone 7921G handset in amultifloor building with a WLAN that operates at an 11 MB/s data rate， how many decibelsreferenced to 1 milliwatt of same-channel separation are recommended between floors？（）

Which format can NOT be imported into Cisco WCS Planning Tool？（）

Which three items does the Cisco WCS Planning Tool Generate Proposal Report provide？（） 

Which three colors are used in the Cisco WCS v5.2 Voice Readiness Tool？（）