Concept:The part labeled II is a network interconnection device, such as a switch or hub, used to direct data traffic between computers.
Explanation:The figure shows a network setup where several computers are connected through a central device.
The part labeled II is placed between the computers as the common point of connection.
When one computer sends data, the device receives the data packet and forwards it to the intended computer.
It does this by reading the destination address in each packet and sending the packet out through the correct port.
This function is known as forwarding data packets between computers.
It is not mainly used to speed up transfer, nor does it provide services to the entire setup like a server, and it does not control access to part I.
The main duty of the device in part II is therefore to manage communication between the computers by forwarding packets.
Answer:C. forwarding data packets between computers.
