Ch-5


 * Chapter 5 OSI Network Layer **

What is the method described by the network layer for routing packets from a device on one network to a device on a different network? How does the Internet Protocol (IP) work at the network layer to provide connectionless, best-effort service to the upper layers of the OSI model? How are devices grouped into physical and logical networks? How do the hierarchical addresses of devices allow communication between networks? How do routers use next-hop addresses to select a path for packets to reach their destination? How do routers forward packets?