Public networks are communication systems that are accessible to the general public. These networks allow individuals and organizations to connect and share information without restrictions. Examples include the internet and public Wi-Fi hotspots, which enable users to access online resources and communicate with others. Public networks are typically managed by government entities or private companies, ensuring that they are available for everyone. While they offer convenience and connectivity, users should be cautious about security risks, as public networks can be vulnerable to unauthorized access and data breaches.