The decentralized topology of the Internet is formed by smaller interconnected networks called subnets. These subnets are interlinked in various ways, contributing to the overall structure of the Internet. Interconnection is facilitated by a device called as router, which establishes the links between subnets.
In decentralized topology , it made up of smaller networks called subnets which are interlinked together through router act as a gateway. The Router is a host machine which is connected to multiple subnets and has it own IP address per subnet and uplink address.