Differences of OSI and TCP IP Model
TCP/IP model was formed by DoD( Department of Defence ) which came almost 10 years earlier than OSI model and is defined with 4 layers as TCP and IP are the two protocols just like FTP, UDP, SNMP, SMTP, Telnet, etc. ... So OSI model is a reference on how we use internet today and not the TCP/IP model.OSI, open systems interconnection, is a reference model in networking that defines how communication should take place. ISO, international organization for standardization, is the body who created OSI. ... Major difference is OSI has seven layers, while TCP/IP model crams all that into four.