Asked by: Maiane Rohirse
technology and computing computer networking

Why do we need TCP and UDP?

Last Updated: 24th February, 2020

10
Both TCP and UDP are protocols used forsendingbits of data — known as packets — over theInternet.They both build on top of the Internet protocol. In otherwords,whether you are sending a packet via TCP orUDP, thatpacket is sent to an IP address.

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Subsequently, one may also ask, why would you use UDP over TCP?

UDP can be used in applicationsthatrequire lossless data transmission when the applicationisconfigured to manage the process of retransmittinglostpackets and correctly arranging received packets. This approachcanhelp to improve the data transfer rate of largefilescompared to TCP.

Subsequently, question is, which is better TCP or UDP? UDP. Faster Speed – UDP VPNserviceoffers significantly greater speeds than TCP. Forthisreason it is the preferred protocol when streaming HD videosordownloading torrents/p2p . Lower Reliability – Onrareoccasions UDP can be less reliable that TCPVPNconnections as UDP does not guarantee the deliveryofpackets.

Secondly, what is difference between UDP and TCP?

TCP (Transmission Control Protocol) isconnectionoriented, whereas UDP (User Datagram Protocol)isconnection-less. This means that TCP tracks all datasent,requiring acknowledgment for each octet (generally). Becauseofacknowledgments, TCP is considered a reliable datatransferprotocol.

What are the advantages and disadvantages between TCP and UDP?

The main advantages for UDP arethatdatagram boundaries are respected, you can broadcast, and itisfast. The main disadvantage is unreliability andthereforecomplicated to program at the application level. TCPand UDPuse the same addressing scheme.

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Is YouTube a TCP or UDP?

Youtube uses TCP to control messagesratherthan UDP because of many reason If we use UDPwe mightget better performance than TCP but UDP willloosemany chunks of packet while streaming due to the lossy natureofInternet communications .

Yusraa Sembritzki

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Why is UDP needed?

UDP has the capability of adding the portaddressto IP. Reasons for using UDP: UDP reducesoverheadbecause it does not add flow control, error control, orsequencedelivery unlike connection-oriented services. UDP isusedfor the transmission of data in which delivery of the data ismoreimportant than accuracy.

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What layer is UDP?

TCP and UDP are transport layerprotocolsand as such exist at layer 4 of the OSI model abovetheNetwork Layer and below theSessionLayer.

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Does Netflix use UDP?

For non real time video streaming, likeNetflix,Hulu, Youtube, etc. they just use TCP anddobuffering instead of UDP, since they don't careabout a fewseconds delay between the server and client. That said,one of themost popular video streaming protocols that is basedonUDP/IP is RTP.

Przemyslaw Kleebaur

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Is http UDP or TCP?

HTTP uses TCP because the files,images,web pages which we get from the remote host should not bedroppedon the way and it should be delivered in order to theHTTPclient. HTTP could also use UDP butusually not, if aUDP packet containing the first part of aweb page is lost,then its not retransmitted.

Robel Zimmet

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What are the situations when UDP is preferred over TCP?

UDP can be multicasted to multiplehostswhereas TCP cannot do this at all. TCP ,dueto its connection establishing and error checkingmechanismis considered a slow protocol (although reliable). WhileUDPdoes not have all those time consuming mechanisms and soit is muchfaster, not reliable but fast.

Nubia Ganilha

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What is the main difference between TCP and UDP?

DIFFERENCE BETWEEN TCP AND UDP.TCP(Transmission Control Protocol) is connection oriented,whereasUDP (User Datagram Protocol) is connection-less. Thismeansthat TCP tracks all data sent, requiring acknowledgmentforeach octet (generally).

Marilee Irlenbusch

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Where is TCP used?

TCP/IP, or the TransmissionControlProtocol/Internet Protocol, is a suite of communicationprotocolsused to interconnect network devices on theinternet.TCP/IP can also be used as a communicationsprotocolin a private network (an intranet or anextranet).

Chunguang Quiroga

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Where do we use TCP and UDP?

You can also use UDP to broadcast toanymachine(s) listening to the server. In general: TCP isforhigh-reliability data transmissions. UDP is forlow-overheadtransmissions.

Aguasanta Feiten

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Why is TCP used?

TCP/IP is important because whole internetrunsover it. This is the protocols using which 2 differentnetworkElements communicate with each other. Without theTCP/IP thedata communication and Internet orInter-Networking of the devicesis not possible.

Wiktoria Goldscheider

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What is the purpose of ARP?

The Address Resolution Protocol (ARP)featureperforms a required function in IP routing. ARP findsthehardware address, also known as Media Access Control (MAC)address,of a host from its known IP address. ARP maintains acache(table) in which MAC addresses are mapped toIPaddresses.

Kadiatou Pelzer

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How does TCP and UDP work?

Both TCP and UDP are protocols used forsendingbits of data — known as packets — over theInternet.They both build on top of the Internet protocol. In otherwords,whether you are sending a packet via TCP orUDP, thatpacket is sent to an IP address. TCP and UDPare not theonly protocols that work on top ofIP.

Romana Zabarte

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How many UDP ports are there?

65,535 UDP ports

Sherice Molitor

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Is TCP connection oriented?

TCPConnection-OrientedCommunications
This is calledconnection-orientedcommunication. TCPmaintains status information regardingthe connections itmakes and is therefore a reliableprotocol. A single TCPconnection is identified bycombination of IP addresses andvirtual port numbers used by bothends.

Ledy Galan

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What is 3 way handshake?

A three-way handshake is a method used inaTCP/IP network to create a connection between a localhost/clientand server. It is a three-step method thatrequires both theclient and server to exchange SYN and ACK(acknowledgment) packetsbefore actual data communicationbegins.

Arianne Lammlin

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What is protocol explain?

Protocol, in computer science, a set of rulesorprocedures for transmitting data between electronic devices,suchas computers. In order for computers to exchange information,theremust be a preexisting agreement as to how the information willbestructured and how each side will send and receiveit.

Lesha Sheluntsov

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How UDP connection is established?

Protocol Header
A computer may send UDP packets withoutfirstestablishing a connection to the recipient.SourcePort (UDP packets from a client use this as a serviceaccesspoint (SAP) to indicate the session on the local clientthatoriginated the packet. UDP packets from a server carrytheserver SAP in this field)

Rajinder Miguez

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Is 443 a TCP or UDP?

Like TCP (Transmission ControlProtocol),UDP is used with IP (the Internet Protocol) butunlikeTCP on Port 443, UDP Port 443isconnectionless and does not guarantee reliable communication;it'sup to the application that received the message on Port443to process any errors and verify correctdelivery.

Easter Springsfeld

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Is MQTT TCP or UDP?

UDP: MQTT uses TCP, you canblockall UDP datagram packets.

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24th February, 2020

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