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Вопрос		Ответ
What is PAN? начать обучение		Personal Area Network, Nearest neighborhood, < 1 m
What is LAN? начать обучение		Local Area Network, Room building areal, 10m 100m 1km
What is MAN? начать обучение		Metropolitan Network, Town City Country, 10km 100km 1000km
What is WAN? начать обучение		Wide Area Network, Continent, 1000km
What node roles are there? начать обучение		peer-to-peer, client-server, master-slave
What mediums are there for networks to travel? начать обучение		Metalic, optics, wireless
What mode of transportation are there for data networks? начать обучение		Connection oriented (Circuits), Connectionless (packets)
What data networks architectures are there? начать обучение		ISO/OSI, TCP/IP, X. 25 and so on
What’s a network architecture? начать обучение		Method of communication and definition of the set of used protocols and layers
Whats‘s network topology? начать обучение		Way of interconnection of elements in the network
Examples of topologies? начать обучение		Bus, ring, star, extended star, hierarchical, mesh
Why is network architecture useful? начать обучение		Implementation if the network at all is too complicated, so we decompose the problem into smaller parts (layers)

Introduction. Basic concepts, historical overview.