Final answer:
Free Wi-Fi is typically offered on an open network, but it is important to be cautious as the data transmitted over an open network is not secure. Encrypted networks use encryption protocols to secure data, and private networks require a password or authentication.
Step-by-step explanation:
Free Wi-Fi is typically offered on an open network. An open network is a network that allows anyone to connect without a password or any form of encryption. This means that the data transmitted over the network is not secure and can potentially be intercepted by others.
Unlike an unencrypted network, an encrypted network uses encryption protocols to secure the transmitted data. Encryption ensures that the data can only be read by authorized devices with the correct encryption key.
A private network, on the other hand, requires a password or some form of authentication to connect. This type of network is typically used in homes, offices, or other private settings, where only authorized individuals should have access.