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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

$$\scriptsize{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline
\textbf{Year}& \textbf{2022} & \textbf{2021-1}&\textbf{2021-2}&\textbf{2020}&\textbf{2019}&\textbf{2018}&\textbf{2017-1}&\textbf{2017-2}&\textbf{2016-1}&\textbf{2016-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}
\\\hline\textbf{1 Mark Count} & 2 &4&2&2&2&3&2&2&1&1&1&2.1&4
\\\hline\textbf{2 Marks Count} & 4 &1&3&4&4&3&2&2&4&3&1&3&4
\\\hline\textbf{Total Marks} & 10 &6&8&10&10&9&6&6&9&7&\bf{6}&\bf{8.1}&\bf{10}\\\hline
\end{array}}}$$

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Recent questions in Operating System

24 votes
4 answers
4982
GATE CSE 1992 | Question: 02-xi
A computer system has $6$ tape devices, with n processes competing for them. Each process may need $3$ tape drives. The maximum value of n for which the system is guaranteed to be deadlock-free is: $2$ $3$ $4$ $1$
A computer system has $6$ tape devices, with n processes competing for them. Each process may need $3$ tape drives. The maximum value of n for which the system is guarant...
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26 votes
5 answers
4983
GATE CSE 1992 | Question: 02,x, ISRO2015-35
At a particular time of computation, the value of a counting semaphore is $7$. Then $20$ $P$ operations and $15$ $V$ operations were completed on this semaphore. The resulting value of the semaphore is : $42$ $2$ $7$ $12$
At a particular time of computation, the value of a counting semaphore is $7$. Then $20$ $P$ operations and $15$ $V$ operations were completed on this semaphore. The resu...
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24 votes
1 answer
4986
GATE CSE 1991 | Question: 02-iii
Match the pairs in the following questions by writing the corresponding letters only. ...
Match the pairs in the following questions by writing the corresponding letters only.$$\begin{array}{|ll|ll|}\hline \text{(a)} & \text{Buddy system} & \text{(p)} & \tex...
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16 votes
1 answer
4988
GATE CSE 1991 | Question: 01-xii
A given set of processes can be implemented by using only parbegin/parend statement, if the precedence graph of these processes is ______
A given set of processes can be implemented by using only parbegin/parend statement, if the precedence graph of these processes is ______
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29 votes
3 answers
4990
GATE CSE 2008 | Question: 66
A process executes the following code for(i=0; i<n; i++) fork(); The total number of child processes created is $n$ $2^n-1$ $2^n$ $2^{n+1} - 1$
A process executes the following codefor(i=0; i<n; i++) fork();The total number of child processes created is$n$$2^n-1$$2^n$$2^{n+1} - 1$
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32 votes
2 answers
4994
GATE CSE 2008 | Question: 20
The data blocks of a very large file in the Unix file system are allocated using continuous allocation linked allocation indexed allocation an extension of indexed allocation
The data blocks of a very large file in the Unix file system are allocated usingcontinuous allocationlinked allocationindexed allocationan extension of indexed allocation...
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0 votes
2 answers
4997
Page replacement
A memory page containing a heavily used variable that was initialized very early and is in constant use is removed when (a) LRU page replacement algorithm is used (b) FIFO page replacement algorithm is used (c) LFU page replacement algorithm is used (d) None of the above
A memory page containing a heavily used variable that was initialized very early and is in constant use is removed when(a) LRU page replacement algorithm is used(b) FIFO ...
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1 votes
2 answers
4998
Can anyone please help (or provide some link stated clearly) in Multilevel Page table and Paging with Segmentation?
Need the clear concept of hierarchy of Page table.
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34 votes
4 answers
4999
GATE CSE 2012 | Question: 8
A process executes the code fork(); fork(); fork(); The total number of child processes created is $3$ $4$ $7$ $8$
A process executes the codefork(); fork(); fork();The total number of child processes created is$3$$4$$7$$8$
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