TCP is a Transmission Control Protocol. It’s the major part of the TCP/IP protocol. It offers reliable data transmission across applications and networks. This makes it essential for modern communications.
What is TCP?
TCP is also known as the transport layer protocol. It’s function is to deliver data packets reliably between systems in a systematic manner. The TCP protocol works with the IP model, which is why it is also known as TCP/IP.
The transport layers play a critical role in ensuring that data is sent and received accurately between devices. The TCP protocol sends an acknowledgement to confirm that all data transfer is done accurately. This type of protocol is important for sensitive applications like email and file sharing.
How Does Transmission Control Protocol Work?
First, Transmission Control Protocol makes a connection between the sender and receiver. This process is known as the three-way handshake. It aids in establishing secure connections. This protocol breaks large data into small packets and then assigns a sequence number. These packets are sent over the Internet layers.
The best thing about these Transmission Control Protocols, or Internet protocols, is that they resend packets if they are lost or corrupted. It makes certain that every packet is received correctly. This eventually made it one of the most reliable transport protocols or transfer protocols.
Each device involved uses port numbers to identify specific processes and ensure accurate data delivery. The system is responsible for reassembling the packets in the correct order. It also checks for any errors during the transmission.
TCP vs UDP: the difference between them
- Transmission Control Protocol is connection-oriented, whereas UDP is connectionless.
- TCP protocol ensures data integrity, whereas UDP doesn’t.
- UDP is faster but not very reliable.
TCP protocol is best for applications that need accuracy, whereas UDP is good for online gaming or streaming.
Pros & Cons
Pros:
- Accurate data transmission
- Error-checking and correction
- Ensures the correct sequence and receiving
Cons:
- Slower because of overhead
- More resource-intensive
The TCP protocol is imperative when precision in transmitting data matters more than speed.
Examples
- Web Browsing (HTTP/HTTPS) uses Transmission Control Protocol to load applications and content correctly.
- Email services like IMAP as well as SMTP rely on transmission control protocol.
- File transfers via FTP are built on the TCP protocol.
- Remote Desktop Apps use Transmission Control Protocol to make stable connections.
- Online payments need TCP protocol for secure data transfers.
With its focus on reliable data communication, TCP protocol remains the backbone of many internet-based applications within the application layers of network models. Also, IP addressing ensures each packet reaches the right destination.