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Processes, Threads, Inter‐process communication, Concurrency and synchronization. Deadlock. CPU scheduling. Memory management and Virtual memory. File systems. Disks is also under this

$$\small{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline
\textbf{Year}&\textbf{2019}&\textbf{2018}&\textbf{2017-1}&\textbf{2017-2}&\textbf{2016-1}&\textbf{2016-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}
\\\hline\textbf{1 Mark Count}&2&3&2&2&1&1&1&2&3
\\\hline\textbf{2 Marks Count}&4&3&2&2&4&3&3&3&4
\\\hline\textbf{Total Marks}&10&9&6&6&9&7&\bf{6}&\bf{7.8}&\bf{10}\\\hline
\end{array}}}$$

Featured Questions in Operating System

49 votes
7 answers
1
Given below is a program which when executed spawns two concurrent processes : semaphore $X : = 0 ;$ /* Process now forks into concurrent processes $P1$ & $P2$ */ $\begin{array}{|l|l|}\hline \text{$P1$} & \text{$P2$} \\\hline \text{repeat forever } & \text{repeat forever} \\ \text{$V ... (I) and (II) are true. (I) is true but (II) is false. (II) is true but (I) is false Both (I) and (II) are false
asked Nov 3, 2014 in Operating System Ishrat Jahan 11.3k views
33 votes
2 answers
2
Which of the following DMA transfer modes and interrupt handling mechanisms will enable the highest I/O band-width? Transparent DMA and Polling interrupts Cycle-stealing and Vectored interrupts Block transfer and Vectored interrupts Block transfer and Polling interrupts
asked Oct 31, 2014 in Operating System Ishrat Jahan 7.1k views
29 votes
7 answers
3
Consider the $3$ processes, $P1, P2$ and $P3$ shown in the table. $\small \begin{array}{|c|c|c|} \hline \textbf{Process} & \textbf{Arrival Time} & \textbf{Time Units Required} \\\hline \text{P1} & 0 & 5\\\hline \text{P2} & 1 & 7 \\\hline \text{P3} & 3 & 4 \\\hline \end{array}$The ... : $P1, P3, P2$ RR2: $P1, P3, P2$ FCFS: $P1, P2, P3$ RR2: $P1, P3, P2$ FCFS: $P1, P3, P2$ RR2: $P1, P2, P3$
asked Sep 26, 2014 in Operating System Arjun 7.7k views
56 votes
2 answers
4
A CPU has two modes -- privileged and non-privileged. In order to change the mode from privileged to non-privileged a hardware interrupt is needed a software interrupt is needed a privileged instruction (which does not generate an interrupt) is needed a non-privileged instruction (which does not generate an interrupt) is needed
asked Sep 14, 2014 in Operating System Kathleen 12.1k views
173 votes
11 answers
5
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