Routers are fundamental network devices that direct traffic between networks and allow for flexible communication. They forward data packets between network points using routing protocols and logical IP addressing to connect multiple networks together. Routers perform the important functions of delivering and forwarding information as the backbone of networks, enabling larger networks to remain operational during changes.

12. • The router is a fundamental building block of modern business
networks, providing traffic with a gateway to both the Internet and
other networks. Routers make flexible cross-network communication
possible, and allow larger networks to remain operational even during
redesigns. They can also play important secondary roles on a
network, with working other devices such as firewalls, modems and
switches

13. • When you establish the computer network , You need to install
several hardware & software components , The data is sent to the
next network points in the form of packets , the transfer of packets
is carried through the routers , The routers perform the task of
delivering & forwarding the information .
• Routers are hardware devices which direct the traffic across
networks by using different routing table protocols , When the
routers connect two or more networks together & use the logical
addressing , this is called an Internet Address (IP)

15. Function of routers
• MAC Addresses
• Understanding the Protocols
• Backbone of the Internet
• Routers for Home & Small Business