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Network Administration is the process of managing, monitoring, protecting, and supporting an organization's network. The specific tasks and procedures for this job vary depending on the size of the organization and its field of activity.

A network administrator is an IT professional who ensures the proper functioning of an organization's computer networks, including local area networks (LANs), wide area networks (WANs), network segments, and intranets. He or she installs, maintains, troubleshoots, and secures the network. Certification courses such as the Cisco CCNA/CCDA and CCNP/CCDP provide network engineers with the skills to build and manage the network architecture of small and medium-sized organizations.