A network administrator is a person responsible for the maintenance of computer hardware and software that makes a computer networks. They also involved design and installation. Network Administrator must be able to monitor the system's performance and maintain hardwares. They have some common duties, such as ensure security of the system, troubleshoot problems, install, maintain and upgrade personal computers. Network adminitrators are the key staff in any type of office set up that uses hundreds of computers. What does a network administrator do is that he ensures the computers wired in a network function smoothly, without any disruption in their performance.
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