1. The document discusses the roles and responsibilities of network administrators in maintaining a school's computer network. It describes the network setup including servers, firewalls, switches, and wireless access. 2. Network technicians are responsible for connecting computers to the network and configuring routers and switches. System administrators maintain file servers, set up user accounts and passwords, and ensure the network is secure from viruses and hackers. 3. As system administrators handle user and hardware issues, software problems, and potential conflicts between management wanting to save money and users wanting more resources. They perform tasks like fault management, configuration management, and security management.