TCP versus UDP
There are several differences between TCP and UDP. These differences include the following:
Reliability: TCP is more reliable than UDP
Ordering: TCP guarantees the order of packet transmission will be preserved
Header size: The UDP header is smaller than the TCP header
Speed: UDP is faster than TCP
When a packet is sent using TCP, the packet is guaranteed to arrive. If it is lost, then it is re-sent. UDP does not offer this guarantee. If the packet does not arrive, then it is not re-sent.
TCP preserves the order that packets are sent in, while UDP does not. If the TCP packets arrive at a destination in a different order than how they were sent, TCP will reassemble the packets in their original order. With UDP, this ordering is not preserved.
When a packet is created, header information is attached to assist in the delivery of the packet. With UDP the header consists of 8 bytes. The usual size of a TCP header is 32 bytes.
With a smaller header size and lack of the overhead to ensure...
