Interview Intel

Vector Clock Comparison and Concurrency

Three processes maintain vector clocks. Event e1e_1 at P1P_1 has vector clock [3,2,1][3, 2, 1]. Event e2e_2 at P2P_2 has vector clock [2,4,1][2, 4, 1]. What is the relationship between e1e_1 and e2e_2?