Kindly use your own words do not copy and paste from other sources, do not use hand writting!!

1. List the layers of OSI (Explain in Detail 650 words minimum) Which layers are network support layers? Which layers are user support layers? What are the concerns of the Physical Layer? What are the responsibilities of Data Link Layer? What are the responsibilities of Network Layer? What are the responsibilities of Transport Layer? What are the responsibilities of Session Layer? What are the responsibilities of Presentation Layer? What are the responsibilities of Application Layer