What is OSI model?what are the layers and what are the devices associated with those layers?

  • What is OSI model? What are the layers and what are the devices associated with those layers?
  • What are major protocols used in networking? where are those belonging to in OSI model?
  • What are major network devices? what each one does? how do those relate to OSI model and the protocols?
  • What are wireless communication standards? how do those fit into OSI model?

Requirements:

At least 8 pages, font size 11, line spacing 0 before and 8 after
Images and screenshots should not be larger than the equivalent of 5 lines of text