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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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Most answered questions in Operating System

41 votes
6 answers
102
GATE CSE 2000 | Question: 1.20, ISRO2008-47
Which of the following need not necessarily be saved on a context switch between processes? General purpose registers Translation look-aside buffer Program counter All of the above
Which of the following need not necessarily be saved on a context switch between processes?General purpose registersTranslation look-aside bufferProgram counterAll of the...
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21 votes
5 answers
103
GATE CSE 2023 | Question: 17
Which one or more of the following $\text{CPU}$ scheduling algorithms can potentially cause starvation? First-in First-Out Round Robin Priority Scheduling Shortest Job First
Which one or more of the following $\text{CPU}$ scheduling algorithms can potentially cause starvation?First-in First-OutRound RobinPriority SchedulingShortest Job First
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4 votes
5 answers
104
UGC NET CSE | January 2017 | Part 3 | Question: 2
Which of the following is incorrect for virtual memory? Large programs can be written More I/O is required More addressable memory available Faster and easy swapping of process
Which of the following is incorrect for virtual memory?Large programs can be writtenMore I/O is requiredMore addressable memory availableFaster and easy swapping of proce...
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1 votes
5 answers
106
UGC NET CSE | January 2017 | Part 2 | Question: 37
In a paging system, it takes $30$ ns to search translation Look-a-side Buffer (TLB) and $90$ ns to access the main memory. If the TLB hit ratio is $70\%$, the effective memory access time is : $48$ ns $147$ns $120$ns $84$ns
In a paging system, it takes $30$ ns to search translation Look-a-side Buffer (TLB) and $90$ ns to access the main memory. If the TLB hit ratio is $70\%$, the effective m...
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15 votes
5 answers
114
ISRO2017-51
Wha is the output of the following program? main() { int a = 10; if(fork()) == 0)) a++; printf("%d\n",a); } 10 and 11 10 11 11 and 11
Wha is the output of the following program?main() { int a = 10; if(fork()) == 0)) a++; printf("%d\n",a); }10 and 11101111 and 11
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30 votes
5 answers
117
GATE CSE 2017 Set 2 | Question: 07
Which of the following is/are shared by all the threads in a process? Program counter Stack Address space Registers (I) and (II) only (III) only (IV) only (III) and (IV) only
Which of the following is/are shared by all the threads in a process?Program counterStackAddress spaceRegisters(I) and (II) only(III) only(IV) only(III) and (IV) only
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0 votes
5 answers
118
Ace test series
Which of the following scheduling algorithms can cause indefinite blocking of a process? a>FIFO b>SRTF c>Round Robin d>Priority scheduling According to me answer should be B and D.Am I correct??
Which of the following scheduling algorithms can cause indefinite blocking of a process?a>FIFOb>SRTFc>Round Robin d>Priority scheduling According to me answer should be B...
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9 votes
5 answers
119
GATE CSE 1988 | Question: 2xa
State any undesirable characteristic of the following criteria for measuring performance of an operating system: Turn around time
State any undesirable characteristic of the following criteria for measuring performance of an operating system:Turn around time
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28 votes
5 answers
120
GATE CSE 1989 | Question: 2-iv
Match the pairs in the following: ...
Match the pairs in the following:$$\begin{array}{ll|ll}\hline \text{(A)} & \text{Virtual memory} & \text{(p)} & \text{ Temporal Locality} \\\hline \text{(B)} & \text{Sha...
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