What is TCP?




The Transmission Control Protocol (TCP) is a language of communication used to transmit packets of data across the Internet or other networks. It also acts as a transport layer which conveys information between remote computers over supporting networks. It is widely utilized in the digital network communication and is always referred to as TCP/IP suite.




The Transmission Control Protocol establishes a connection between the origin and destination before transmitting data. It also maintains the connection and is used to break down large files into smaller packets. Once the data has been disintegrated, the TCP program ensures that they are intact while they are traveling towards the destination point.

The TCP coordinates its operations with the Internet Protocol to determine the sequence used by the devices in transmitting the packet data. The program is effective in maintaining connectivity till the process of communication is terminated describing it as a connection-oriented protocol. TCP performs various functions which allow easier transmission of data across the internet. It involves determining how the broken data can be sent, conveying the information and receiving data from the network layer. It also manages transmission of lost or dropped packets for the second time. Since it offers error-free transmission of data, it is effective in coordinating the flow of control.

It is prominent in the OSI reference model covering the Session and transport layers, enhancing the conveyance of information over the networks. However, the Transmission Control Protocol is prone to latency because of the variety of functions it performs to ensure the packets are delivered to their destination.

In such situations, it requires the User Datagram Protocol which handles the particular cases. It leads to low levels of latency the fact that it offers a connectionless datagram. There are several internet applications which depend on the TCP program for active transmission of data to different computers over the web. They include emails, file transfer, worldwide web and remote administration.




The HTTP protocol is used by the web server while transmitting HTML file to another server or client. The Transmission Control Protocol breaks down the significant data into smaller packets before sending to the internet protocol layer that executes the delivery. The packages may run across different routes despite the fact that they originate from a similar source. Once the entire packets have reached the destination, the TCP program in the corresponding server will acknowledge the delivery. In circumstances where there may be missing packets, it will request for a retransmission before assembling the data in a file.