A company deploys a wireless network on campus. The network analysts use multiple APs to locate wireless clients based on the RSS values received by the APs. What is a reason that the method may not provide accurate location information all the time?

A company deploys a wireless network on campus. The network analysts use multiple APs to locate wireless clients based on the RSS values received by the APs. What is a reason that the method may not provide accurate location information all the time?

• The method assumes that the APs and client devices are Cisco products.
• The method assumes that the client devices are using intercontroller roaming.
• The method assumes that the client devices are using intracontroller roaming.
• The method assumes that the APs and client devices are in open free space with no physical obstacles.

Explanation: The method to obtain the RSS values from three or more APs and correlate the results and determine where they intersect is based on the assumption that the APs and client devices are located in open free space, with nothing but free space path loss to attenuate the RF signal. In a normal environment, the APs and clients exist in buildings where physical objects, such as walls, doors, windows, furniture, cubicles, and shelving, also exist and get in the way of the RF signals. Usually the signals can pass through various materials but get attenuated along the way. That further complicates determining device location accurately.

Exam with this question: Quiz - Understanding Wireless Roaming and Location Services