Asked by: Marilin Mialdea
technology and computing internet of things

Why is UDP needed?

Last Updated: 22nd March, 2020

UDP reduces overhead because it does not addflowcontrol, error control, or sequence deliveryunlikeconnection-oriented services. UDP is used forthetransmission of data in which delivery of the data ismoreimportant than accuracy. Therefore, UDPisneeded.

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Consequently, why do we need UDP?

UDP can be used in applicationsthatrequire lossless data transmission when the applicationisconfigured to manage the process of retransmitting lost packetsandcorrectly arranging received packets. This approach can helptoimprove the data transfer rate of large files comparedtoTCP.

Furthermore, why UDP is unreliable protocol? Streaming media such as video,audio and othersuseUDP because it offers speed. The reason UDP isfasterthan TCP is because there is no form of flow control. Noerrorchecking,error correction, or acknowledgment is donebyUDP.UDP is only concerned with speed.

Also to know, why would an application use UDP instead of TCP?

Because UDP does not employ congestioncontrol,but TCP does, it can take away capacity fromTCP thatyields to UDP flows. The result is thatUDP can:Achieve higher throughput than TCP as long asthe networkdrop rate are within limits that the applicationcan handle.Deliver packets faster than TCP withlessdelay.

What does UDP mean?

User Datagram Protocol (UDP) is part oftheInternet Protocol suite used by programs running ondifferentcomputers on a network. UDP is used to send shortmessagescalled datagrams but overall, it is an unreliable,connectionlessprotocol. UDP is officially defined inRFC 768 andwas formulated by David P. Reed.

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