can anyone explain the clean working of this?
Posted on: Fri, 04/11/2008 - 18:34
nlp26
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can anyone explain the clean working of this?
what is the exact work done by UDP packet...User datagram protocol packet working in network system...Which plays the vital role in networking? whether TCP packet,Ping of death,UDP packet, router...What do u think..Share ur views...
User Datagram Protocol (UDP) is one of the core protocols of the Internet protocol suite. Using UDP, programs on networked computers can send short messages sometimes known as datagrams (using Datagram Sockets) to one another. UDP is sometimes called the Universal Datagram Protocol. The protocol was designed by David P. Reed in 1980.
UDP does not guarantee reliability or ordering in the way that TCP does. Datagrams may arrive out of order, appear duplicated, or go missing without notice. Avoiding the overhead of checking whether every packet actually arrived makes UDP faster and more efficient, for applications that do not need guaranteed delivery. Time-sensitive applications often use UDP because dropped packets are preferable to delayed packets. UDP's stateless nature is also useful for servers that answer small queries from huge numbers of clients. Unlike TCP, UDP is compatible with packet broadcast (sending to all on local network) and multicasting (send to all subscribers).
Common network applications that use UDP include: the Domain Name System (DNS), streaming media applications such as IPTV, Voice over IP (VoIP), Trivial File Transfer Protocol (TFTP) and online games.
Karinna has it right, if not a little hard to understand if you dont know about it in the first instance.
easiest way to explain it -
you need several things to connect to the internet these are:
1)a physical connection (a cable, or a wireless signal, something to transmit the data across)
2)internet protocol (IP) this is the IP part of TCP/IP and UDP/IP, this is the part that gives your computer an address on the internet.
3) a control protocol (TCP or UDP) there are only two. you have to chose one.
TCP makes it reliable (this means that if I send 1 packet to you then you send me a reply saying that you got that packet and that its ok for me to send the next packet to you [syn/ack challenge handshake]) UDP is smaller (and therefor faster) but doesnt provide for reliability, you can loose packets)
4) an application - an html browser, telnet, a webserver, ping (which uses icmp), bittorrent,RTSP [realplayer]
do some research on the OSI/ISO 7 layer model to find out the exact details =)