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Router.
A router
A router
A router connects multiple computers together and transmits data to its correct destination on a network.
The network device that connect multiple networks that use the same protocol is a ROUTER.
In a star topology, each device connects to a central network connectivity device such as a hub, switch, or router. These devices would be connected as a "star" (points on a star). The other characteristic of a star topology is that a failing connection will only affect the failed device unless that device is the connectivity device. This means that in most cases a failing device on a star will not take down the entire network. Another characteristic of a star is that they are easily expandable and scalable.
The physical topology that operates around a central network device is known as a star topology. In this configuration, all network devices are connected to a central hub, switch, or router, which facilitates communication between them. This design enhances reliability, as the failure of one connection does not affect the entire network, though the central device's failure can lead to network disruption. Star topology is commonly used in home and office networks due to its simplicity and ease of management.
The device that connects one network to another is Router or Multilayer Switches but by default multilayer switches will not enable the services connecting two different network we should provide instruction through CLI.
A Router/Modem
Bus topology as many nodes are connected to single link
Routers connects different network to internet.There are 2 ways to connect to the internet.
A modem or router