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2. Network administrator - Wikipedia

   en.wikipedia.org/wiki/Network_administrator

   As with many technical roles, network administrator positions require a breadth of technical knowledge and the ability to learn the intricacies of new networking and server software packages quickly. Within smaller organizations, the more senior role of network engineer is sometimes attached to the responsibilities of the network administrator.

3. Network operations center - Wikipedia

   en.wikipedia.org/wiki/Network_operations_center

   A NOC engineer has several duties in order to ensure the smooth running of the network. They deal with things such as DDoS attacks, power outages, network failures, and routing black-holes. There are of course the basic roles, such as remote hands, support, configuration of hardware (such as firewalls and routers, purchased by a client).

4. Computer network engineering - Wikipedia

   en.wikipedia.org/wiki/Computer_network_engineering

   Computer network engineering is a technology discipline within engineering that deals with the design, implementation, and management of computer networks. These systems contain both physical components, such as routers , switches, cables, and some logical elements, such as protocols and network services .

5. Network engineering - Wikipedia

   en.wikipedia.org/wiki/Network_engineering

   Network engineering may refer to: Internetworking, service requirements for switched telephone networks; Computer network engineering, the design and management of computer networks; Telecommunications Engineering, developing telecommunications network topologies; Broadcasting, spreading messages to a dispersed audience electronically

6. System administrator - Wikipedia

   en.wikipedia.org/wiki/System_administrator

   Sometimes, almost exclusively in smaller sites, the role of system administrator may be given to a skilled user in addition to or in replacement of their duties. Skills Some of this section is from the Occupational Outlook Handbook , 2010–11 Edition, which is in the public domain as a work of the United States government .

7. Physical layer - Wikipedia

   en.wikipedia.org/wiki/Physical_layer

   The physical layer consists of the electronic circuit transmission technologies of a network. [3] It is a fundamental layer underlying the higher level functions in a network, and can be implemented through a great number of different hardware technologies with widely varying characteristics.