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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

$$\scriptsize{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline
\textbf{Year}&\textbf{2024-1} & \textbf{2024-2} &\textbf{2023}&  \textbf{2022} & \textbf{2021-1}&\textbf{2021-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}
\\\hline\textbf{1 Mark Count} &2&2&3& 2 &4&2&2&2.5&4
\\\hline\textbf{2 Marks Count} & 4&4&3&4 &1&3&1&3.16&4
\\\hline\textbf{Total Marks} & 10&10&9&10 &6&8&\bf{6}&\bf{8.83}&\bf{10}\\\hline
\end{array}}}$$

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Recent questions in Operating System

1 votes
1 answer
4534
DEADLOCK
in which system deadlock exists ?
in which system deadlock exists ?
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2 answers
4536
Let P0 And P1 are two processes,each accessing two binary semaphore s and q set to value 1:
P0 wait(s); wait(q); Signal (s); signal(q);... P1[ wait(q);wait(s);} signal(q);signal(s);.... whether progress is guarnteed or not ???
P0wait(s); wait(q);Signal (s); signal(q);...P1[wait(q);wait(s);}signal(q);signal(s);....whether progress is guarnteed or not ???
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0 votes
1 answer
4537
Deadlock
Deadlock Prevention is not practically feasible because : 1) Applicable to only shared resources 2) It is only a therotical concept 3)Resource utilization is low 4)It is only applicable to OS Unix
Deadlock Prevention is not practically feasible because :1) Applicable to only shared resources2) It is only a therotical concept3)Resource utilization is low4)It is only...
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2 answers
4538
which address is this physical or logical?
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0 votes
1 answer
4539
process synchronizatiom
Suppose there are 2 process p and q : P: while (1) { wait (mutex); print '1'; signal (mutex); } Q: { wait (mutex); print '0'; signal (mutex); } If process p exceute then only Q execute , then what pattern is obtained ? a) (01)*  b)(10)*  c)(1/0)* d) none of these 
Suppose there are 2 process p and q :P:while (1){wait (mutex);print '1';signal (mutex);}Q:{wait (mutex);print '0';signal (mutex);}If process p exceute then only Q execute...
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1 answer
4540
Process Synchronization
In a nCPU shared system , if Z is the probability that any CPU request the bus in a given cycle , the probability that only 1 CPU use teh bus is given by : a)nZ(1-n)(n-1)     b)Z(1-Z)(n-1)  c)n(1-Z)n              d)(n-1)(1-Z)n
In a nCPU shared system , if Z is the probability that any CPU request the bus in a given cycle , the probability that only 1 CPU use teh bus is given by :a)nZ(1-n)(n-1) ...
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2 votes
2 answers
4542
Segmentation
In segmented paging, is the paging applied on segment table or on segments?
In segmented paging, is the paging applied on segment table or on segments?
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0 votes
1 answer
4543
bit rate of video terminal unit
what is bit rate of video terminal unit with 80 character/line , 8 bits/character and horizontal sweep time of 100 micro sec?
what is bit rate of video terminal unit with 80 character/line , 8 bits/character and horizontal sweep time of 100 micro sec?
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0 votes
1 answer
4544
MAX RESOLUTION SUPPORT
System having 8 MB of video memory for bit mapped graphics with 64 bit color what is max resolution can support
System having 8 MB of video memory for bit mapped graphics with 64 bit color what is max resolution can support
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0 votes
1 answer
4545
Max number of files
A computer system uses a single level directory structure . The directory occupies 2 disk block . the disk block size is 2KB. directory entry size is 4 bytes . Then what is maximum number of File in File system ?
A computer system uses a single level directory structure . The directory occupies 2 disk block . the disk block size is 2KB. directory entry size is 4 bytes . Then what ...
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1 votes
1 answer
4546
File system
Consider a file system where linked allocation strategy and contigous allocation strategy is used , The number of disk block to be accessed if the k block of file to be accessed respectively is ? a) 1,k b)k,1, c)klogk , k d) k , klogk
Consider a file system where linked allocation strategy and contigous allocation strategy is used , The number of disk block to be accessed if the k block of file to be a...
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0 votes
1 answer
4547
File system
Which file is a sequence of bytes organized into blocks understandable by the system’s linker? a) object file b) source file c) executable file d) text file
Which file is a sequence of bytes organized into blocks understandable by the system’s linker?a) object fileb) source filec) executable filed) text file
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6 votes
2 answers
4550
Scheduling algorithm
Which of the following Algorithm favour CPU bound Bound process ? 1) RR  2) FCFS  3) Multilevel feedback queue option are : a)  1 only b) 2 only c) 1 and 2 only d) 1 and 3 only
Which of the following Algorithm favour CPU bound Bound process ?1) RR  2) FCFS  3) Multilevel feedback queueoption are : a)  1 onlyb) 2 onlyc) 1 and 2 onlyd) 1 and 3 ...
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