SwitchDescription: Network Switch a device that seperates the Broadcast domain of a LAN segment from other segments.
No
Since a router does not forward broadcast messages it automatically splits up the broadcast domains for all clients connected to them.
On shared-media networks (i.e. hubs or pure ethernets), routers break up broadcast domains and bridges break up collision domains. Routers also break up collision domains. On switched networks, routers break up broadcast domains, and every switch port is its own separate collision domain.
NO
A Router
YES
A broadcast domain is created any time you connect several clients together via a network connectivity device, such as a hub or switch or bridge. They would all be in the same broadcast domain for every client connected to them. Since a router does not forward broadcast messages, it creates different broadcast domains.
VLAN
ROUTER!
VLAN
100000