The simple explanation of how a parity check works is:
The situation which will return an ARQ is:
This refers to the authentication process whereby there is a check to see if the data being transmitted is accurate and is the same with the original for security purposes.
This process has to do with the number of 1s in a byte whether odd or even and if they are the same after transmission from the nodes.
With this in mind, we can see that when a packet is missing, then it is a ARQ system and this is an acronym that means Automatic Repeat Request and occurs when a frame is received with errors and thus rejected.
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