What Is a Host Model?

Open System Interconnection Reference Model (OSI for short), referred to as OSI model (OSI model), a conceptual model, proposed by the International Organization for Standardization Interconnection is the standard framework of the network. Defined in ISO / IEC 7498-1.

The OSI / RM protocol is controlled by ISO (

Working out

According to recommendation X.200, OSI divides the computer network architecture into the following seven layers, labeled 1-7, with the first layer at the bottom. "OSI / RM" is

OSI is a well-defined set of protocol specifications and has many optional parts to accomplish similar tasks. It defines the hierarchical structure of the open system, the interrelationships between the layers, and the possible tasks included in each layer as a framework to coordinate and organize the services provided by each layer.

The OSI reference model does not provide a method that can be implemented, but describes some concepts to coordinate the development of inter-process communication standards. That is, the OSI reference model is not a standard, but a conceptual framework used in developing standards.

• The DoD model (Department of Defense Model) is a model developed for ARPANET.

• Network Transmission Protocol

• TCP / IP, the current network model with a similar structure to the OSI model