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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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2 votes
4 answers
4661
which of the following is not a necessary condition for deadlock?
which of the following is not a necessary condition for deadlock? a)Mutual exclusion b)Reentrancy c)Hold and Wait d)No pre-emption
which of the following is not a necessary condition for deadlock?a)Mutual exclusionb)Reentrancyc)Hold and Waitd)No pre-emption
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0 votes
2 answers
4662
how many possible different schedules are there?
A CPU scheduling algorithm determines an order for the execution of its scheduled processes.Given n processes to be scheduled on one processor , how many possible different schedules are there? a)n b)n2 c)n! d)2n 
A CPU scheduling algorithm determines an order for the execution of its scheduled processes.Given n processes to be scheduled on one processor , how many possible differe...
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1 votes
1 answer
4663
how many entries will be there in the page table if it is inverted?
In a 64 bit machine,with 2GB RAM and 8KB page size,how many entries will be there in the page table if it is inverted? a)218 b)220 c)233 d)251
In a 64 bit machine,with 2GB RAM and 8KB page size,how many entries will be there in the page table if it is inverted?a)218b)220c)233d)251
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2 votes
3 answers
4665
ISRO2014-18
Consider the following segment table in segmentation scheme : ... entry at the physical address $2527$ for segment Id $2$ A trap is generated Deadlock Fetches the entry at offset $27$ in Segment Id $3$
Consider the following segment table in segmentation scheme :$\begin{array}{|l|l|l|l|l|}\hline \textbf{Segment ID} & \textbf{Base} & \textbf{Limit} \\\hline \text{0} & \...
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2 votes
5 answers
4669
what is true about binary semaphore?
what is true about binary semaphore? 1)Binary semaphore has drawback called busy wait or spin lock. 2)Binary semaphore is applicable only for two processes 3)Binary semaphore has no drawback called busy wait or spin lock 4)none of the above
what is true about binary semaphore?1)Binary semaphore has drawback called busy wait or spin lock.2)Binary semaphore is applicable only for two processes3)Binary semaphor...
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0 votes
2 answers
4670
why is it profitable to allow internal fragmentation in a multi-programming with variable number of tasks technique ?
When the partition size is very small then why do we say that it is sometimes profitable to allow internal fragmentation in the partition ?
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0 votes
1 answer
4673
what is the difference between a job, task and a process ?
I have already gone through the stack-overflow posts but still could not clear with this concept , so plz clarify it with some examples rather than explaining its definition .
I have already gone through the stack-overflow posts but still could not clear with this concept , so plz clarify it with some examples rather than explaining its definit...
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0 votes
2 answers
4676
what is difference between busy waitng and spin lock?
https://gateoverflow.in/?qa=blob&qa_blobid=10456887729102921117
https://gateoverflow.in/?qa=blob&qa_blobid=10456887729102921117
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0 votes
2 answers
4680
os
How is this stmt is false-command Every thread has it's own heap and data structure
How is this stmt is false-commandEvery thread has it's own heap and data structure
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