OSI/ TCP/IP similarities and diffs

Question 1

What are the similarities?

Answer 1

• Both are based on a stack of independent protocols
• layers in both have roughly the same functionality.
  -from the transport layer and below, both provide network- independent transport services
• The layers above the transport layer are all application oriented

Question 2

What are the differences?

Answer 2

• OSI can be adjusted to fit different networks but TCP/IP and cannot be used to describe any other networks.
  -OSI model has 7 layers whereas the TCP/IP model only has 4
• OSI the network layers supports both connectionless and connection-oriented whereas TCP/IP network layer only supports connectionless
• OSI models transport layer only supports connection-oriented whereas TCP/IP transport layer supports both