A network administrator supports the company's internal servers in the following ways:
Install and maintain network and hardware systems
Diagnose and correct connection problems
Ensures that users can only access the files for which they are authorized
Monitor the network to maintain speed and availability
Manages network security systems
Repair hardware and configure software to maintain operating systems

Depending on the size of the company, network administrators may be responsible for supporting desktop computers and other network devices. Network administrators must have a thorough knowledge of switches, routers and network communications.

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