When deploying APs outdoors, what additional component needs to be used that is not needed indoors?

When performing an active site survey in an existing WLAN infrastructure, in addition to gathering throughput data, what other important function are you typically testing simultaneously?

You're about to deploy an Enterprise-class VoWLAN infrastructure. You need to ensure that QoS is properly configured throughout the network.
What Access
Category (AC) should voice frames/packets use?

In a manufacturing facility with highly reflective materials, you are planning an upgrade to your existing 802.11b WLAN implementation. You have chosen a dual- band 802.11n infrastructure product for this purpose. Your client applications include:
* Handheld scanners for inventory management
* Toughbooks (laptops) mounted on forklifts for inventory and workflow management
* VoWiFi phones used by select employees throughout the facility
You are evaluating all of the 802.11n enhancements and determining which features to enable for your environment and applications.
In this scenario, what 802.11n enhancement typically should NOT be enabled on the 2.4 GHz radio of the new APs?

What is the best method of gathering attenuation measurements from any building materials or objects?