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System calls, Processes, Threads, Inter‐process communication, Concurrency and synchronization. Deadlock. CPU scheduling. Memory management and Virtual memory. File systems. Disks is also under this
$$\scriptsize{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline\textbf{Year}&\textbf{2024-1} & \textbf{2024-2} &\textbf{2023}& \textbf{2022} & \textbf{2021-1}&\textbf{2021-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}\\\hline\textbf{1 Mark Count} &2&2&3& 2 &4&2&2&2.5&4\\\hline\textbf{2 Marks Count} & 4&4&3&4 &1&3&1&3.16&4\\\hline\textbf{Total Marks} & 10&10&9&10 &6&8&\bf{6}&\bf{8.83}&\bf{10}\\\hline\end{array}}}$$