Ect introduction to data communications and networking

Hello, I need to answer theses 10 question perfuctly I want A in this homework 2 mutible choises and 8 are writing answer and they must be enough and properit to the question to earn full mark DUE IN 10 h from now max

 

 

1-List three ways in which the OSI model, over the years, has facilitated the growth in network communications.