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

Introduction. Basic concepts, historical overview.