Local area networks (more accurately in this paper will use the term «local computer networks»,) are divided into two radically different classes: odnorangovye (peer or Peer to Peer) networks and hierarchical (multi-).
Peer to Peer network.
Peer to Peer is a network of equal computers, each with a unique name (computer name) and usually password to gain access to it during boot OS. Name and password to log appointed by the owner of the PC operating system. Peer to Peer network can be arranged through such operating systems as LANtastic, Windows'3 .11, Novell NetWare Lite. These programs work like DOS, and with Windows. Peer to Peer network can be organized on the basis of all modern 32-bit operating systems - Windows'95 OSR2, Windows NT Workstation version, OS / 2) and some drugih.3
Hierarchical network.
In the hierarchy of local networks has one or more specialized computers - servers, which stored the information shared by different users.
The server in hierarchical networks - is a permanent repository of shared resources. Sam server may be only a client server at a higher level of the hierarchy. Therefore, hierarchical network is sometimes referred to as networks with dedicated server. Servers usually a high-performance computers, perhaps with multiple parallel processors, with a large capacity hard drive, with high-speed network card (100 Mb / s and above). Computers in which access to information on the server, called stations, or customers. 3
LCS classified by appointment:
• Network of terminal care. They include computers and peripheral equipment used exclusively computer to which it connects, or wide resource.
• Network, which built on the basis of production management and organizational activities. They are a group of standards MAR / TOR. In IDA describes standards used in industry. TOP describe standards for networks used in office networks.
• Network, which combine automation system design. Workstations such networks usually rely on a powerful personal computers, for example, the company Sun Microsystems.
• Network, on which are distributed computing systems.
For classification local computer networks are divided into the ring, Bus, Star, drevovidnye;
on the basis of speed --
at low speed (up to 10 Mbit / s)
medium (up to 100 Mbit / s)
high-speed (100 Mbps);
the type of access --
• at random,
• proportion,
• hybrid;
type of physical medium --
to vituyu pair
coaxial or fiber cable
infrared channel,
radio.