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distributed system

6. A concurrent work of two computers is represented by the diagram: write(a,l). read(6,1), computer 1: + + external time write(b,3), read(a,1), computer 2: Is this execution sequentially consistent? If yes then arrange the operations into a sequence, so that their execution in the order of their occurrence in this sequence, yields the same result as the concurrent execution and the conditions of sequential consistency are fulfilled. The sequence (if it exists)