What describes a wireless system with an access point that does not transmit the WLAN's SSID in beacon frames?

A wireless system that does not transmit the WLAN's SSID (Service Set Identifier) in beacon frames is referred to as a closed system. This setting enhances security by making the network less visible to potential unauthorized users, as the SSID broadcast is suppressed.

In a closed system, devices must know the SSID in advance to connect. When the SSID is not visible, users cannot simply scan for available networks. This approach can help reduce the likelihood of unauthorized access attempts, although it is worth mentioning that it does not provide robust security by itself since knowledgeable attackers can still discover hidden networks through other means.

Understanding this is crucial as it highlights one aspect of network security that involves not only encryption and authentication but also the visibility of the network. Other systems, such as open, public, or secure systems, do not require or enforce the same level of hidden access points as closed systems.