Why OSI is called open system?

Answer: OSI system is called Open System Interconnection because It provides the collection of protocols for the connection of different system to connect with any dependence on any other system or network.

Explanation: Open system interconnection establishes a connection between the different system for the communication purpose using several protocols and software standards. It has no dependency or any network or other system to do the functioning and works using the seven layers of the OSI architecture. Thus, that is why OSI system known as open system.