Coining a new terminology in the technical field requires a strong impulse. The concept of DTN arrived primarily to combat the disruption which occurs in conventional TCP/IP (Transmission Control Protocol). Our communication network has many mediums that a data packet can take, like: wire, wireless, optical etc. These medium are subjective to various damages such as wire cut, power failure of a node and other human generated errors. As a consequence, the sender of data from one end of communication channel could not send the data. DTN, to some extent, eradicates this problem. How TCP works? TCP is the most widely used protocol in the history of computers, that's for sure. Lets just have a look on its basics in the figure below. The main concept here is to confirm that a communication channel exists from sender to the receiver. That is exactly how TCP functions. The sender first sends a packet having SYN flag value high(1). The SYN high flag means a node wants to start a dat