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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

#3021
629
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1 answers
2 votes
Self Doubt
Order the following Disk Scheduling Algorithm on the basis of throughputFCFS, SCAN, C-SCAN, SSTF, LOOK, C-LOOK.
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#3022
676
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1 answers
2 votes
Memory Management
What is the difference between the functions performed in compile time and functions performed in link time?
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#3023
592
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1 answers
2 votes
Memory Management
What is the difference between Physical Address, Virtual Address and Absolute Address?
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#3024
956
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0 answers
2 votes
Operating system revision
I.Show the address format for virtual address (18)16 (specify field name and size) that would be used by the system to translate to a physical address and then ... is the address in?What is the byte offset?Is the page in physical memory?
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#3025
169
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0 answers
1 votes
OperatingSystem-SecurityQuestions
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#3026
627
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0 answers
1 votes
CPU Utilization
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#3027
289
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0 answers
1 votes
TestSeries2018Ace
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#3028
745
views
1 answers
8 votes
PAGING
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#3029
296
views
0 answers
1 votes
System
The number of bits for limit, segment base and type in a 32 bit segment descriptor is
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#3030
1.1k
views
1 answers
5 votes
Multilevel TLB performance
A computer has a 128-entry $L_1$ TLB, 1024-entry $L_2$ TLB, and uses page size of 4KB. A program reads a 1MB array, one byte at a time from start to end, 10 ... , find TLB hits and misses of both $L_1$ and $L_2$ TLB (array is page aligned).
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#3031
886
views
1 answers
2 votes
Word or byte
Let the number of bits required to address a memory word be 25. Each word is of 16 bits.Number of words in the memory is ________.Number of ... as ____________Number of bits to address __________.Where W denotes word and B denotes bytes.
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#3032
418
views
0 answers
2 votes
x86 problem
1 pointConsider a system using 2-level paging and the virtual address is 38 bits. The most significant 12 bit are used to index the page directory and next 14 ... both level is 4 Bytes.How large are the page frames ?Size of page tables?
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#3033
562
views
1 answers
1 votes
Binary semaphore
In the standard code for UP operation,UP (S){ if(Waiting queue L is empty) S = 1; else ... a process can enter the critical section only after letting in, all the processes the got blocked before it?
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#3034
1.4k
views
1 answers
2 votes
Related to page frame
n a 32 bit processor the virtual address is 22 bit:12 bit(Table index : Offset). What is the size of the page frame and the process page table assuming that each entry in the page table is 4 Bytes?
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#3035
1.5k
views
0 answers
2 votes
multilevel paging
if virtual address=46 bits,physical address=32 bits,three level paging.outer page table has exactly one page.Page table entry is 32 bits.What is the size of the page in this computer?
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#3036
333
views
2 answers
1 votes
fifo page replacement
Is belady's anomaly will be seen in every reference string for fifo page replacement or it is seen for some reference string only?
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#3037
667
views
2 answers
4 votes
Self Doubt
Whether the following statement is true or false??"The OS maintains scheduling and accounting information for each thread"
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#3038
2.2k
views
1 answers
1 votes
page replacement
A page-replacement algorithm should minimize the number of page faults. We can achieve this minimization by distributing heavily used pages evenly over all of memory, rather than having them compete ... , 2. (A) 11 (B) 12 (C) 13 (D) 14
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#3039
976
views
2 answers
1 votes
Basic internal fragmentation doubt.
Suppose I have two processes requiring 50 bytes each. If I have a single partition of 100 bytes. Can both the processes occupy this hole or ... bytes ?Also if internal fragmentation is present then external fragmentation is also present?
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#3040
526
views
2 answers
1 votes
GATE 2009 33
Is Spin Lock in TSL a kind of a deadlock? Or we can not consider it a deadlock at all?
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