This course is senior module within the Applied computer science program of the African Virtual University. It aims to provide in-depth knowledge in computer network technology and Communication by exploring the network administration. Network administration in any organization is in a charge of operation that involves IT infrastructure. With the convergence of computer networks and telecommunications networks, network administration work has also evolved tremendously and has become more demanding. This module encloses all the aspects needed for a network administrator to be well equipped. Having a network put in place, the administrator has is required to understand; legal aspects for network administration, ethical conduct for the network administrator, network services run on your network to enable provision of IT service(s), administration services, securing both hardware and application as well as maintenance and troubleshooting the network.