Every machine on the the Internet has a unique number assigned to it, called an IP address. Without a unique IP address on your machine, you will not be able to communicate with other devices, users, ...

An Internet Protocol address is a number that identifies a device in a network, though the term is often used to refer to a device on the Internet itself. An IP address is vital for transferring data ...

- Different notebooks, iPads, and smartphones (connected via Wifi). So, should I manually assign IP addresses to some of the devices? And why? Or should I just let my router assign a static/reserved ...