Internet Of Things (IOT102) Practice Test

On the Internet, every device is identified by an IP address, which serves as the unique routing label used by routers to deliver packets to the correct destination. This numerical address is what enables data to flow from one device to another across interconnected networks, whether the device uses IPv4 or IPv6, and whether it sits behind a private network or is reachable publicly. Human-friendly names or URLs do not function as the actual routing identifiers; names are translated to IP addresses by DNS before any data can be sent. A gateway address refers to the router’s address on a local network, not the individual device’s global identity. A device name is useful for humans but isn’t guaranteed to be unique across networks, and a URL points to a resource on the Web, not to the device itself. Thus, the IP address is the standard, widely used identifier that distinguishes devices on the Internet.