In the text:
The Open System Interconnection is a reference model for how software applications communicate over a network. It is a conceptual framework that provides a handy visual design of how one layer is set on top of another. Its primary purpose is to guide technology vendors and developers to create digital products and software that easily interoperate.
I met the term reference model? What is it? (Wikipedia don't help me find out what it is)
From the source:
www.intelice.com
The Open System Interconnection is a reference model for how software applications communicate over a network. It is a conceptual framework that provides a handy visual design of how one layer is set on top of another. Its primary purpose is to guide technology vendors and developers to create digital products and software that easily interoperate.
I met the term reference model? What is it? (Wikipedia don't help me find out what it is)
From the source:

What Are The Seven Layers Of The OSI Model? DC Tech Blog
The acronym OSI stands for Open System Interconnection. This networking framework implements protocols in seven layers, hence the "7 layers of OSI model."
