What causes the most signal attenuation, based on the wireless design tools?

A wireless engineer is designing a wireless network to support real-time applications over wireless. Which IEEE protocol must the engineer enables on the WLC so that the number of packets that are exchanged between an access point and client are reduced and fast roaming occurs?

An engineer is designing a new wireless network. The network needs to meet these requirements
* support a high wireless client concentration
* support data over wireless
* support voice over wireless
* avoid interference
Which design approach should be taken?

Drag and drop the characteristics from the left onto the correct functionalities on the right.

What is the attenuation value of a human body on a wireless signal?