There are n numbers of users who use computer network and are located over the world. So to ensure, national and worldwide data communication, systems must be developed which are compatible to communicate with each other ISO has developed a standard. ISO stands for International organization of Standardization. This is called a model for Open System Interconnection (OSI) and is commonly known as OSI model.
The ISO-OSI model is a seven layer architecture. It defines seven layers or levels in a complete communication system. They are:
Application Layer, Presentation Layer, Session Layer, Transport Layer, Network Layer, Data link Layer, Physical Layer.
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Any criminal activity that uses a computer either as an instrument, target, or a means for perpetuating further crimes comes within the ambit of "cyber crime".
Read MoreEach computer on a TCP/IP based network (including the internet) has a unique, numeric address called an IP (Internet Protocol) address, enabling data packages to be addressed.
Read MoreGPU (Graphics Processing Unit) is an electronic circuit used to speed up the creation of both 2D and 3D images. A GPU can be present on a video card or motherboard.
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