A Network Administrator oversees an organization's network infrastructure, ensuring optimal performance and security. Key responsibilities include configuring and maintaining network hardware, monitoring traffic, troubleshooting issues, and implementing security protocols. Required skills encompass networking knowledge, problem-solving, and communication. Typically working in IT departments, they collaborate with system administrators and support teams. Career progression could lead to roles like Network Engineer or IT Manager, with opportunities to specialize in areas like cybersecurity or cloud networking.