Answer:
The correct answer is "iii. Router." A router is used to connect two different types of networks.
Step-by-step explanation:
A router is a networking device that operates at the network layer of the OSI model. It receives data packets from one network and forwards them to another network based on the destination IP address.
Routers are designed to connect networks with different protocols or network architectures. They analyze the IP addresses of incoming packets and determine the best path for forwarding them to their intended destination. This allows routers to connect networks with different types of addressing schemes or protocols, such as connecting a local area network (LAN) to the internet.
For example, if you have a home network using Wi-Fi and you want to connect it to the internet, you would use a router. The router would connect to your internet service provider (ISP) via a modem and then route the traffic between your devices and the internet.
While hubs and switches are also networking devices, they do not perform the same function as a router when it comes to connecting different types of networks.
A hub simply broadcasts data packets to all connected devices on a network, which means it doesn't differentiate between different types of networks or perform any routing functions.
A switch, on the other hand, is used to connect devices within the same network. It learns the MAC addresses of devices connected to it and uses that information to forward data packets only to the appropriate destination device within the same network.
In summary, a router is the device used to connect two different types of networks, while hubs and switches are used for different purposes within a network. Therefore, the correct answer is "iii. Router."