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Understanding this model is essential for anyone who wants to be involved in the field of computer networking. If you have forgotten the OSI model or just want to get a crash course in it, this cheat sheet by Ccna-security.net should help
Technology is evolving at a fast pace. Networking and Information Systems Security is a field that offers the chance to work as a network administrator, information security analyst, computer systems analyst, or database administrator. Not sure what people do in those jobs? Click to read the infographic.