What security feature should you always turn on when your laptop is connected to public Wi-Fi to ensure a layer of security that acts as a barrier between your private network and the outside world?

The security feature that you should always turn on when your laptop is connected to public Wi-Fi is a firewall. A firewall will act as a barrier between your private network and the outside world, monitoring and controlling incoming and outgoing network traffic. It helps prevent unauthorized access to your device and protects your data from potential security threats.