Are you investigating how to become a Network Systems Administrator and want to know more about the career? The main job of a Network and Computer Systems Administrator is to manage an organization’s computer systems. This includes monitoring local area networks (LANs), wide area networks (WAN), servers, and other communication systems. They install hardware and software, maintain network security, and ensure network availability. They also test websites to assure they are working correctly. Network and Computer Systems Administrators assist in network modeling, respond to network and system crises, and work to improve network performance.