It is established after the 3-way handshake is complete and the channel is open between a sender and a receiver.
See related link
TCP is known as a connection-oriented protocol, which means that a connection is established and maintained until such time as the message or messages to be exchanged by the application programs at each end have been exchanged.that connection is virtual only...
3. syn, syn-ack, and ack. Then you're established.
HTTP works over a TCP connection.HTTP works over a TCP connection.HTTP works over a TCP connection.HTTP works over a TCP connection.
Connection-oriented
UDP and TCP both are transport layer protocols. UDP is connection less and TCP is connection oriented. UDP is preferred over TCP when large amount data is to be sent like on skype or video conferencing .
TCP is the protocol of network layer, It is connection oriented protocol. UDP is the protocol of network layer, It is connection less protocol.
Three
A single port can be configured to listen for UDP or TCP inbound connection requests (or both). Telnet uses TCP. So when you telnet to a specific IP:port, telnet will attempt to make a TCP connection. If there is no TCP listener on the port you specify, then the connection request will be refused. It matters not if you have a UDP listener on the port. Telnet will not be able to establish a connection to a UDP port.
tcp based protocols,internet protocol,sometimes file transfer protocol also supported by tcp wrappers. tcp is reliable and connection oriented.
http://support.microsoft.com/kb/923200 When the sending computer sends FIN, the state of the TCP connection is set to FIN_WAIT_2. After the TCP connection has been closed, the sending computer sends RST in order to reset the connection if the receiving computer sends any packets to the sending computer.
because the tcp is reliable
110