Describe the issue of duplicate SSIDs and why this may cause a wireless device to intermittently disconnect from the AP.

What will be an ideal response?

If the same SSID is used on another AP, then both APs are considered to be part of the same network and must share the same security settings. However, in instances where a default SSID has not been changed, it is possible that two separate devices not intended to be part of the same WLAN (such as two devices in the same apartment building) are broadcasting the same SSID. The wireless device may then choose the remote AP of another wireless network instead of the local AP. Because that remote device will not be configured for the same authentication method and keys of the main wireless network, the wireless device will not be able to connect to it.