Briefly explain how turning off the beaconing of the SSID affects roaming in a wireless network environment.
What will be an ideal response?
Turning off SSID beaconing prevents wireless devices from freely roaming from one wireless network to another. To increase the area of coverage of a wireless LAN, multiple access points are installed with areas of overlap, much like cells in a cellular telephone system. The APs can be positioned so that the cells overlap to facilitate movement between cells, known as roaming. When a mobile wireless user (perhaps carrying a wireless laptop computer) enters into the range of more than one AP, the wireless device will choose an AP based on signal strength (some also look at packet error rates). Mobile devices constantly survey the radio frequencies at regular intervals to determine if a different AP can provide better service. If it finds one (perhaps because the user has moved closer to it), then the device automatically attempts to associate with the new AP (this process is called a handoff).
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What will be an ideal response?