A Network Administrator is responsible for managing and maintaining an organization's computer network systems. Their main tasks include:1.Installing and configuring network hardware and software2.Monitoring network performance and troubleshooting issues3.Ensuring network security through firewalls, VPNs, and other security measures4.Managing user accounts and permissions5.Planning and implementing network upgrades and expansions6.Providing technical support to users7.Staying up-to-date with new technologies and industry developments.Strong problem-solving and communication skills are also essential for success in this role.