Broadcast Domain is a network segment where a device can receive all broadcast messages from the members of the segment. It is usually segmented by Network Layer# Network Device# (modern #Switch and #Router).
It can come in handy when a device wants to query the network for an IP Address#, when a device is newly added to a network, or when a change occurs in the network.
We can apply access rules and provision services to the users of same or similar responsibilities without the need to change the topology of the network or changing the IP Address. Furthermore, VLAN can also create their own Broadcast Domain# without the help from Network Layer Network Device (modern #Switch and #Router). Basically, we could assign the hosts in a subnet# to be in the same VLAN. By using VLAN, we could have different broadcast domains even in a single switch so that broadcast flooding affects only those in the same grouping. If a link needs to handle more than one VLAN, #VLAN Trunking will be used.
Switch is a #Network Device that can operates in either Data Link Layer# or Network Layer# (modern implementation). It is an intelligence Bridge, which provide superior throughput performance, more ports (lower per-port cost), high-speed connections, segmentation using Virtual LAN (VLAN)# or Broadcast Domain# (modern), and even routing (in the case of Multilayer Switch). This makes large-scale segmentation possible within the [Local-Area Network (LAN)](202207051554)❌.
It can be used to divide devices into Broadcast Domain#.