Selecting network-related hardware (such as modems, routers, switches, bridges, controllers, wireless access points, and network interface cards) and software based on company needs.
Building intranets, extranets, LANs, and WANs using the selected components.
Testing the newly-built networks.
Protecting the networks with firewalls and antivirus software.
Documenting and diagramming each network.
Monitoring network performance and making adjustments or updates as needed.
Troubleshooting and repairing network issues.
Carrying out disaster recovery plans in times of crisis.
Learning and implementing new technologies to keep networks modern
