The first chapter basic knowledge network
1.1 computer network abstract:
Different geographical location of the device by connecting to achieve resource sharing,
Can be divided into resource subnet and communication subnet,
Resource subnet: all kinds of terminal and networking equipment,
Communication subnet: communication lines and other network communication equipment,
1.2 computer network partitioning
Press coverage: divided into local area network (LAN) and metropolitan area network, wide area network,
According to the topology tumble: main line, star, ring, tree, mesh type,
Divided according to the transmission mode: broadcasting, point to point,
1.3 the computer network structure description
Backbone: large network structure,
Network planning:
Transmission medium: wired and wireless
Cable, optical fiber, coaxial cable,
Wireless: radio, microwaves,
Major network equipment: network card, Repeaters, Bridges (secondary switch), routers (layer 3 switches),
