Soon the NOSs role expanded greatly to management of the resources in the local network, and to link up with other local area networks (LAN), therefore creating wide area networks … Client/server systems are more secure and common for business based networks. Network Operating System Network Operating Systems 0 Shares. WestRock 3.1. Vangie Beal. 12 hour shift + 1. -- Created using Powtoon -- Free sign up at http://www.powtoon.com/youtube/ -- Create animated videos and animated presentations for free. Lan Operating Systems network operating system Network Operating System Real time Operating System. The network operating system acts as a director to keep the network running smoothly. Network operating systems, key components that enabled users to share network resources, are becoming increasingly hard to distinguish from the computer's operating system.