A network administrator is a professional responsible for managing and maintaining computer networks within an organization. Their primary duties include monitoring network performance, troubleshooting issues, and ensuring security protocols are in place. They work with various hardware and software components to ensure that all systems function smoothly. In addition to technical skills, network administrators often collaborate with other IT staff and users to address network-related concerns. They may also be involved in planning network upgrades and implementing new technologies to improve efficiency. Overall, their role is crucial for maintaining reliable and secure computer networks.