The OSI model

Published February 19, 2017

The OSI model

In 1978, for open systems interconnection, available for communication with other systems, ISO (International Standard Organization) released specifications. All systems can now use the same protocols and standards for the exchange of information. In 1984, ISO released a new version of its model the OSI model...

Transmission of information over a network

Published April 23, 2017

Transmission of information over a network

Data consisting of zeros and ones is usually contained in large files. However, the networks will not function properly if the transmission of information over the network will occur with the help of such entire data blocks. At this time, other computers have to wait a long time for their turn. This situation is similar to the exclusive use of the network...

Development models and software design methods

Published December 03, 2017

Development models and software design methods

For the engineering approach to the design of software, models for its development were proposed. The first and the most popular is the waterfall method. This model idealizes the design process, assuming that each stage of the project is completed before the next stage of the project and no return to the previous stage is performed. Considering the importance for the further development of the first stages...

Internet protocols

Published May 13, 2018

Internet protocols

Internet protocols are of two types: basic and applied. Basic protocols are responsible for the physical transfer of messages between computers on the Internet. These are the IP and TCP protocols. Applied protocols of the Internet of a higher level, they are responsible for the functioning of specialized services. For example, the HTTP protocol serves for the transfer...

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