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
$$\scriptsize{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|c|c|c|c|c|c|}\hline \textbf{Year}& \textbf{2026 - 1}& \textbf{2026 - 2}& \textbf{2025 - 1}& \textbf{2025 - 2}& \textbf{2024 - 1}& \textbf{2024 - 2}& \textbf{2023}& \textbf{2022}& \textbf{2021 - 1}& \textbf{2021 - 2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}\\\hline \textbf{1 Mark Count}&2&1&2&1&2&2&3&2&4&2&1&2.1&4\\\hline \textbf{2 Marks Count}&2&3&3&3&4&4&3&4&1&3&1&3&4\\\hline \textbf{Total Marks}&6&7&8&7&10&10&9&10&6&8&\bf{6}&\bf{8.1}&\bf{10}\\\hline \end{array}}}$$