Free CCNA training TAMIL | NETWORK DEVICES | basic networking | sk computer technologies

#freeccna #basicnetworking #networkdevices Free ccna course training video explains Learn network devices such as router, switches, Ethernet , cables etc. A Cisco router connects different networks together whereas, a switch connects multiple devices together to create a network. 2. Routers work on the Physical layer; Data link layer and the Network layer whereas Switches, as well as advanced switches, work on the Data link layer and the Network layer too. Switch Switch is a network device that connects other devices to Ethernet networks through twisted pair cables. It uses packet switching technique to receive, store and forward data packets on the network. The switch maintains a list of network addresses of all the devices connected to it. On receiving a packet, it checks the destination address and transmits the packet to the correct port. Before forwarding, the packets are checked for collision and other network errors. The data is transmitted in full duplex mode For Trai