Which two requirements are inputs to the design?

An engineer is performing a predictive wireless design for a carpeted office space, which requires voice capability and location services.

Which two requirements are inputs to the design? (Choose two.)
A . overlapping -67 dBm coverage from three access points
B . overlapping -75 dBm coverage from three access points
C . overlapping-72 dBm coverage from two access points
D . continuous -67 dBm coverage from one access point
E . continuous -72 dBm coverage from one access point

Answer: AD

Explanation:

For a voice network the APs are grouped closer together and have more overlap than a data-only installation because voice clients need to roam to a better AP before dropping packets. Generally, you should create smaller cells than for data-only networks and ensure the overlapping cell edges are at or above -67 dBm.

Reference: http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/emob73dg/emob73/ch3_WLAN.html#pgfId-1000250