Network Administrator

Key Responsibilities

• Configure and maintain network devices such as routers, switches, firewalls, and wireless access points.
• Proactively monitor network performance to identify bottlenecks and ensure high availability.
• Implement cybersecurity policies, access control, and firmware updates across network hardware.
• Troubleshoot and resolve connectivity issues, packet loss, and latency reported by users or automated systems.
• Document the physical and logical network topology, keeping network diagrams, inventories, and IP schemes up to date.

Requirements & Skills

Day in the Life

A typical day for a Network Administrator begins by reviewing monitoring dashboards to ensure all network links and devices are operating smoothly. In the morning, they run security checks, analyze firewall alerts, and perform configuration backups for network equipment. Throughout the day, their time is split between resolving complex connectivity tickets, deploying new VLANs or access policies, and planning physical or logical infrastructure upgrades. In collaboration meetings with other IT teams, they help provision secure network resources for new systems. At the end of the day, they update network diagrams and document changes to maintain a pristine history of the infrastructure.

Interview Questions