IP/TCP
TCP/IP defines the rule computers must follow to communicate with each other over the internet. It is the protocol suite that drives the Internet. Specifically, TCP/IP handles network communications between network nodes (computers, or nodes, connected to the net).The suite is actually composed of several protocols including IP which handles the movement of data between host computers, TCP manages the movement of data between applications.
About IP
IP is for communication between computers.It is a "connection-less" communication protocol. IP does not occupy the communication line between two computers. IP reduces the need for network lines. Each line can be used for communication between many different computers at the same time.With IP, messages (or other data) are broken up into small independent "packets" and sent between computers via the Internet.
IP is responsible for "routing" each packet to the correct destination.When an IP packet is sent from a computer, it arrives at an IP router. The IP router is responsible for "routing" the packet to the correct destination, directly or via another router.
About TCP
TCP is for communication between applications.If one application wants to communicate with another via TCP, it sends a communication request. This request must be sent to an exact address. After a "handshake" between the two applications, TCP will set up a "full-duplex" communication between the two applications.The "full-duplex" communication will occupy the communication line between the two computers until it is closed by one of the two applications.
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