"Case 1: ... network card many transfer stale data if .... " => "Case 1:... network card 'may' transfer stale data if ..."
msebek
DMA stands for "Direct Memory Access", and is where the main processor shouts "Hey, someone move/process/give this memory to somewhere/someone else", and rather than occupy all if its time doing it, a separate coprocessor does it instead.
It seems like a typo:
"Case 1: ... network card many transfer stale data if .... " => "Case 1:... network card 'may' transfer stale data if ..."
DMA stands for "Direct Memory Access", and is where the main processor shouts "Hey, someone move/process/give this memory to somewhere/someone else", and rather than occupy all if its time doing it, a separate coprocessor does it instead.