1 Version 3.1 Module 1 WANs and Routers. 2 Version 3.1 WANS WAN operates at the physical layer and the data link layer of the OSI reference model. Provide. - ppt download
1 Version 3.1 Module 1 WANs and Routers. 2 Version 3.1 WANS WAN operates at the physical layer and the data link layer of the OSI reference model. Provide. - ppt download