TCP/IP Basics
When you use TCP/IP, you are using a network of computers to communicate with other users, share data, and share processing resources. A computer network is a group of nodes connected by a communication medium.
Difference between TCP/IP and OSI Model
- OSI refers to Open Systems Interconnection
- TCP/IP refers to Transmission Control Protocol
- OSI follows a vertical approach
- TCP/IP follows a horizontal approach
- OSI model, the transport layer, is only connection-oriented
- The TCP/IP model is both connection-oriented and connectionless
IPv4 Address
- An IPv4 address is a 32-bit address that uniquely defines a device’s connection to the Internet.
Reason for Inventing TCP/IP
- The TCP/IP protocol suite was created in the 1970s by DARPA scientists Vint Cerf and Bob Kahn to explore alternative network designs and assist network research.
Analogous Layers in TCP/IP
- Host-to-Host Layer is analogous to the transport layer of the OSI model.
- The transport layer links the network support layers (physical, data link, and network) and user support layers (session, presentation, and application) by segmenting and rearranging the data.