Because UDP does not use handshaking, connection-oriented transmission, and is thus much faster.
. Handshaking
A connection based protocol requires a technique known as hand-shaking. This means that every packet that is transmitted requires a response from the receiver indicating that they received the packet and that the packet arrived safely. There is a 3-way startup sequence to create a connection using handshaking protocol.
outline the generation of three way handshaking outline the generation of three way handshaking
handshaking is basically two computers ensuring they have a connestion over a network
ABBA has a song "And vinner takes the all" the crucial part of which is the necessity for a woman to accept handshaking with her former husband. The signing some documents implies the handshaking. (Can be signing without handshaking but not handshaking without the signing.)
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The verb form for the noun 'handshaking' is to shake hands (shakes hands, shaking hands, shook hands), a verb-object combination.
This is usually done because of the requirements of the data transfer. For example, FTP (file transfer protocol) will use TCP for transport because we want to make sure the data was transferred reliably. DNS will use UDP because we don't need the handshaking or connection based transport.
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William McKinley