COMPUTER NETWORKING

Detailed explanation-1: -When a data packet comes in on one of the lines, the router reads the network address information in the packet header to determine the ultimate destination. Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey.

Detailed explanation-2: -Packets are made of a header and a payload. Data in the header is used by networking hardware to direct the packet to its destination, where the payload is extracted and used by an operating system, application software, or higher layer protocols.

Detailed explanation-3: -The Internet Protocol (IP) is the protocol that describes how to route messages from one computer to another computer on the network. Each message is split up into packets, and the packets hop from router to router on the way to their destination.

Detailed explanation-4: -A router receives packets from each interface via a network interface. Received packets have all link protocol headers removed. The router uses the information in the IP header to decide whether and where to forward each received packet, and which network interface to use to send the packet.