Connection Oriented - Uses TCP Three-Way Handshake to establish connection
Once the transmission is done it uses FIN/ ACK to close the connection
Assures delivery of packets through error-handling (data sequencing)
Makes use of checksum
If corrupted data detected the effected packet is retransmitted
Sequence number is used to detect missing data and place data in correct order
TCP Sequence Numbers
The SYN flag is responsible for telling the server about the number from which it has to start counting the packets
The Sequence Number (ISN) is an unique high number
When the server sends back SYN-ACK it increments the Sequence Number by 1 and returns it as the Acknowledgement Number
Additionally the server sends its own Sequence Number to the client
When client responses to server with the ACK Flag it increments the Acknowledgement No. by 1
Once the sequence numbers are synchronized and the connection is established depending on the size and the amount (bytes) of data sent by the client the sequence numbers will increase