What is the minimum number of APs to be used to achieve an accurate location of wireless clients based on RSS values?
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Explanation: To locate a device more accurately, an AP can use the received signal strength (RSS) of a client device as a measure of the distance between the two. However, if the distance is measured from a single AP only, it is difficult to determine where the client is situated in relation to the AP. A better solution is to obtain the same measurement from three or more APs, then correlate the results and determine where they intersect.
Exam with this question: Quiz - Understanding Wireless Roaming and Location Services
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