What type of network is characterized by radio transmissions instead of wired connections?

The correct answer is WLAN, which stands for Wireless Local Area Network. WLANs are designed to provide wireless connectivity within a limited area, such as a home, office, or school, using radio transmissions. This technology allows devices to connect to the network without physical wired connections, enabling more flexibility in network setup and the mobility of connected devices.

In a WLAN, data is typically transmitted using radio waves from access points to devices like laptops, smartphones, and tablets. This allows users to move around freely without losing their connection to the network, making it particularly useful in environments where mobility is essential.

The other choices focus on different aspects of networking. For instance, LPWAN (Low Power Wide Area Network) is designed for long-range communication with low power consumption, often used in IoT applications. WAN (Wide Area Network) encompasses larger geographical areas and can include wired and wireless technologies. A Bluetooth Network is specifically designed for short-range communication between devices, typically for personal area networking but does not cover the broader implications of wireless local area networks.