Because the host can send, receive, and process in any order. Regardless of where they come from and where they are going. which makes it possible to several hosts to communicate simultaneously in a network.
It is possible for several hosts to communicate simultaneously in a network because of the packet-switching nature of communication protocols. Each host can send, receive, and process data independently, and the network efficiently handles multiple simultaneous communications by breaking data into packets. These packets can travel different routes to their destinations, allowing for concurrent communication between various hosts on the network.
It is possible for several hosts to communicate simultaneously in a network because A Host can send and receive packets in any order regardless of where they come from or where they're going which make it possible for several host to communicate with each other simultaneously.
Several hosts can communicate simultaneously because a host doesn't have any order in processing the packets, regardless of where it is going or where it is coming from. The data or the packet is handed off to the OS by a host and the OS manages the process of data transmission that enables the simultaneous communication between several hosts in a network.