Review of Routing and Switching
The computer network are playing an important role in providing services to large organization as well as to individual person. A network is a group of interconnected computers that allows to share information and resources (such as printers) from one computer to another. A network with the right software helps to increase employee productivity and reduce costs. Network consists of Nodes (computers), connecting medium (wired or wireless), specialized network equipment like routers or hub. Routing is the act of moving information across an internetwork from a source to a destination. Routing occurs in Layer 3, I.e., Networking layer which distinguishes it from bridging that occurs in Link layer of the OSI model.