Explain what a router is and what role it plays in a network

A router is a network device that connects multiple networks and directs data packets between them. Its main task is to determine the optimal path for transmitting data from the source to the destination.

Role of a router in a network:

• Receives packets from one network and forwards them to another based on routing tables.
• Provides connectivity between local networks (LAN) and external networks, such as the internet.
• Can perform functions like traffic filtering, security (e.g., firewall), and address translation (NAT).

Example: In a home network, a router connects local devices to the internet, directing requests and responses between them.