TCP versus UDP | Compare TCP & UDP | 2024 Updated Lesson!

TCP versus UDP | Compare TCP & UDP | Transmission Control Protocol and User Datagram Protocol
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Here, we will compare TCP and UDP and we will see the difference between these two transport layer protocols. We will leatn which one ise secure, which one is fast and which protocols use UDP, which ones use TCP as transport layer protocols.
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Let’s firstly start with the full name of these transport layer protocols. TCP stands for Transmission Control Protocol while UDP stands for User Datagram Protocol.
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The first difference of TCP vs UDP comparison is about connections and sessions. In User Datagram Protocol, you do not need a connection, so it is a connectionless transport protocol. But Transmission Control Protocol needs a connection. In other words, a connection must be established for the communication of this protocol. So, TCP is a connection-oriented protocol. This connection is done with TCP 3-Way Handshake. with SYN, ACK and SYN-ACK messages. And this connection is termianted with TCP 4-Way Handshake, with FIN and ACK messages from both sides.
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How about speed when we compare UDP vs TCP? If we compare speeds, whatis the difference between TCP and UDP?If we compare the speeds of these two protocols, this time UDP (User Datagram Protocol) wins, because it is faster than TCP. It needs less actions to send data, because it is connectionless and it has no ACK mechanism for guaranteed transfer. TCP is slower than UDP because of its additional mechanisms. So, if you need a fast communication and if some losses are not important for you, you can use User Datagram Protocol. But if guaranteed transfer is the number one case for you, then you should use Transmission Control Protocol even it is slower than UDP.
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