Both TCP and UDP control how packets are prepared for sending across the internet and what happens to them when they are received on the other side. The TCP/IP protocols are a suite of protocols used to support different types of communication between devices over an IP network such as the Internet. Part of an important network protocol called TCP/IP that is used to control data moving through the Internet.
When TCP/IP is used on top of X.25, the X.25 interface breaks the datagrams up into 128-byte packets. This is invisible to IP, because the packets are put back crossgrid.org together into a single datagram at the other end before being processed by TCP/IP. So in this case, one IP datagram would be carried by several packets.
- All the protocols used on a TCP/IP network have been categorised/grouped into 4 abstract layers called the TCP Stack.
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