CCNA Discovery 1, Chapter 3
3.4.1–3.4.3: Table 28-1 compares the functions of hubs and switches at a network’s access layer.
Table 28-1. Functions of Hubs and Switches
3.4.4: When a host application intends to send a frame to all other hosts on a network, it sends a broadcast message. Broadcast messages use FFFF.FFFF.FFFF as the destination MAC address. A switch broadcasts this message to all hosts, and all hosts process the message. A network connected with switches and hubs is a single broadcast domain.
3.4.6 and 3.4.7: When an application intends to send information to another host, but it knows only the IP address of the destination, the ...
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