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...Computer network a is group of interconnected computers to share data resources printer folder internet connection etc networks may be classified according wide variety characteristics classifications scale local area lan covering small physical like home office or buildings such as school an airport metropolitan man large usually spanning city they typically use wireless infrastructure optical fiber connections link their sites wan that covers broad i e any whose communications links cross regional national boundaries topology bus star ring mish functional relationship architecture peer client server domain public open used for communication among devices one the private close organization person...