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the u in udp stands for unreliable and since email is important it is sent using tcp through say smtp or pop3

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15y ago

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What accurately describes tcp and udp?

TCP and UDP are two different layer 4 protocols. TCP reliably sends data with acknowledgments and UDP sends data without checking if the destination received it. Skype uses UDP while email uses TCP.


What is fastest udp or tcp?

UDP


When is UDP preferred to TCP?

UDP and TCP both are transport layer protocols. UDP is connection less and TCP is connection oriented. UDP is preferred over TCP when large amount data is to be sent like on skype or video conferencing .


Does sftp use tcp or udp?

TCP


What is a layer four header?

In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.


Why would you use UDP but not Tcp in real time application?

UDP is alot faster than TCP. So if its realtime obviously it has to be fast, thus UDP. The only problem is UDP isn't as reliable or as secure as TCP. But it does have the speed advantage.


Would you choose tcp or UDP www browsing?

It depends on whether you want speed (UDP) or reliability (TCP).


What is the transport layer protocol used in VOIP?

Transport layer TCP/IP Protocols are TCP and UDP


What is the most significant difference between the Layer 4 TCP and the Layer 4 UDP?

the main difference between UDP and TCP is that UDP is not a reliable protocol.


Does SMTP uses UDP?

No. It use TCP. Port No. is 25. It's use for Email routing between mail server.


What TCP-IP architecture layer do TCP and UDP belong to?

transport


What are the specific port no of tcp and udp?

Port No. for Tranmission Control Protocal (TCP) is 6 Port No. for User Datagram Protocol (UDP) is 17