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What Is IT?  Networking

Since Information Technology (IT) is really communication-of-information technology, IT is mostly computer networking. (Cyber is a prefix meaning IT, so for example, IT security is also known as cybersecurity.) "Computer" includes supercomputers, servers, desktops, laptops, tablets, phones (landlines and cells), TV, etc. There has been a "convergence" and all of these devices now communicate — their most important function — over the same network, the Internet; see figure. Thus, being an IT expert means being a networking expert. (For more see What is IT and What Makes Me an Expert?)

Networking, at its first, lowest, physical layer (hardware; e.g., cables, wireless), is mostly electrical engineering. At its last, highest, application layer (software; e.g., web programming), it is mostly computer science. However, at either end, extensive knowledge of the other end is necessary. Thus to be a networking expert, you need an education in both electrical engineering and computer science from an excellent university. See next entry, Who Am I To Talk About IT Incompetence? Duane Thresher, Ph.D.

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