Republic of uzbekistan andijan machine-building institute fundamentals of business management

Generalized structure of a computer network 
A computer network is considered the highest form of multi-machine association. We will 
show the main difference between a computer network and a multi-machine computing complex. 
The first difference- size, size. The calculation complex with a cup machine usually 
includes two, and three EHMs with a cup, located in one building. A computing network may 
consist of tens or hundreds of EHMs, located several meters from each other, tens, hundreds or 
even thousands of kilometers apart. 
The second difference- division of tasks among EHMs. If in a multi-machine computing 
complex, data processing, transmission and system management are performed in one EHM, then 
in the computing network this task is divided among different EHMs. 
The third difference- the need to solve the task of routing accounts in the network. In 
the network, it can be transmitted from each EHM to another, depending on the condition of the 
communication channels connecting the EHMs with each other. Calculation The integration of 
technology, communication equipment and data transmission channels into one complex requires 
specific requirements from each element of the multi-machine association, as well as the 
formation of special terms. 
Network subscribers -objects that create or consume information in the network.Separate 
exhibitions, exhibition complexes, terminals, industrial works, workstations controlled by digital 
software, etc. can be subscribers. Any subscriber network is connected to the station. The station 
is the equipment that performs tasks related to information transmission and reception. The 
subscriber and station complex is called the subscriber system. To organize mutual communication 
of subscribers, a material means of transmission is needed. The transmission material medium is 
the communication network or the bandwidth and data transmission equipment through which 
electrical signals are propagated. Such an approach is a system of subscribers of any computer 
network and 

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classification of the computing network Depending on the territorial location of the subscriber 
system, the computing network can be divided into three main classes: 
• global networks (WAN - Wide Area Network); regional 
networks (MAN - Memrorolitan Area Network); local 
networks (WAN - Local Area Network). In the countries 
where global reporting is carried out, 
connects subscribers located in different regions. Mutual communication between subscribers is 
carried out on the basis of the telephone network, radio communication and satellite 
communication system. The global computing network solves the problem of unifying the 
information resources of all mankind and organizing access to this resource.