单选题What is a site survey best practice for location-based services?()A20 percent cell overlapBfour access points detecting a client at -76 dBm or betterC10 percent cell overlapDthree access points detecting a client at -75 dBm or better

单选题
What is a site survey best practice for location-based services?()
A

20 percent cell overlap

B

four access points detecting a client at -76 dBm or better

C

10 percent cell overlap

D

three access points detecting a client at -75 dBm or better


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