Which type of network allows for shared access among many devices without physical connections?

A Wireless LAN (WLAN) is designed to enable shared access among multiple devices without the need for physical connections. This type of network uses radio waves to transmit data, allowing devices such as laptops, smartphones, and tablets to connect to the network and communicate with one another wirelessly. The convenience of WLANs is significant, as users can easily move around within the network range without being tethered to a specific location by cables, supporting mobility and flexibility in device usage.

In contrast, a Wired LAN utilizes physical cables to connect devices, which inherently limits mobility since devices must remain plugged into the network. A Demilitarized Zone (DMZ) relates to a network security architecture designed to protect internal networks from external threats; it is not focused on shared access among devices. VLANs (Virtual Local Area Networks) create logical divisions within a single physical network to improve performance and security but still rely on physical connections to operate. Thus, the unique characteristic of WLANs allows for wireless communication and shared access, making it the correct choice for this question.