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

Introduction. Basic concepts, historical overview.