Computer networking is the scientific and engineering discipline concerned with communication between computer systems. Such networks involve at least two devices capable of being networked with at least one usually being a computer. The devices can be separated by a few meters (e.g. via Bluetooth) or thousands of kilometers (e.g. via the Internet). Computer networking is sometimes considered a sub-discipline of telecommunications.
Computer networking can be examined from either the 7 layer OSI Model, or the 4 layer TCP/IP Model This useful study material lists 144 topics with detailed notes, diagrams, equations, formulas & course material, the topics are listed in 8 chapters. Computer networks is part of computer science engineering education courses and information technology degree programs of various universities.