Which OSI layer model is missing in TCP IP model?

Explanation: In OSI reference model, there are two layers which are not present in TCP/IP model. They are Presentation and Session layer. The functions of Presentation and Session layer in the OSI model are handled by the transport layer itself in TCP/IP.

What are the reasons to fail the OSI reference model?

The model was overly complex. Some functions (such as connectionless communication) were neglected, while others (such as error correction and flow control) were repeated at several layers. The growth of the Internet and TCP/IP «a simpler, real-world protocol model» pushed the OSI reference model out.

What are some common problems that would fall under certain specific OSI layers?

Problems that can occur at this layer include, MAC addressing errors, duplex errors, collisions, CRC frame errors, and spanning-tree problems. Ways to detect if Layer 2 errors are occurring are by using various show commands. These include show interface, show port, show spanning-tree commands.

What is OSI CP/IP model?

SO basically OSI CP/IP model provide a set of rules using which a uniform communication method can be established in a network.

What are the disadvantages of TCP/IP?

TCP/IP is a complicated model to set up and manage. The shallow/overhead of TCP/IP is higher-than IPX (Internetwork Packet Exchange). In this, model the transport layer does not guarantee delivery of packets. Replacing protocol in TCP/IP is not easy.

Which layer of the TCP/IP model is both connection-oriented and connectionless?

A layer of the TCP/IP model is both connection-oriented and connectionless. In the OSI model, the data link layer and physical are separate layers. In TCP, physical and data link are both combined as a single host-to-network layer. Session and presentation layers are a part of the OSI model.

What is the difference between OSI header and TCP IP header?

OSI header is 5 bytes whereas TCP/IP header size is 20 bytes. OSI refers to Open Systems Interconnection whereas TCP/IP refers to Transmission Control Protocol. OSI follows a vertical approach whereas TCP/IP follows a horizontal approach.