Web Page

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

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

Recent questions in Operating System

#2861
157
views
0 answers
1 votes
Consider a file system with 2048B block and 32 bit disk and file block pointer .Each file has 12 direct pointer a singly indirect pointer a doubly ... a disk can this file system support ??___________What is the maximum file size________?
#2862
529
views
1 answers
3 votes
#2863
2.1k
views
2 answers
1 votes
Which of the following statement is correct?S1: If deadlock occurs then starvation occurs.S2: if deadlock occurs then starvation do not occur?
#2864
597
views
0 answers
0 votes
#2865
6.1k
views
2 answers
1 votes
Also what exactly resource type is ? Please help with the terms
#2866
307
views
0 answers
1 votes
A moving arm disk-storage device has the following specifications.Number of tracks per recording surface -200Disk - rotation speed - 2400 rpmTrack storage ... is formatted to 256B average no sector possible in each track._____________.?
#2867
1.6k
views
1 answers
2 votes
Consider a program to be run on a computer system in round-robin CPU scheduling. The size of the programis 100K. It is given that the hard disk has a transfer rate of 1 ... CPU utilization ?A. 2.048 secB. 0.216 secC. 0.108 secD. 0.100 sec
#2868
1.3k
views
0 answers
1 votes
Suppose the disk drive has 200 cylinders ( numbered 0 to 199 ) . The drive is currently serving the request atcylinder 53. The previous request was at ... The total distance traveled by the disk arm in SCAN scheme _______is ans 299.?
#2869
576
views
1 answers
1 votes
Consider a logical address space of eight pages of 1024 words each mapped onto a physical memory of 32 frames. The number of bits are there in the logical address is _______.What is logical address space?
#2870
196
views
0 answers
1 votes
Assume that pages are 128 words in size. Consider below code snippet whose function is to initialize to 0 each element of a 128-by-128 array. Then number of page faults generated by the ... i<128; i++)A[i][j] = 0; A. 128B. 16384C. 0D. 16378
#2871
269
views
1 answers
1 votes
-Consider an operating system containing n processes each requiring 4 resources. The maximum number of processes that can be executed without any deadlock if there are 21 resources is available ______
#2874
2.3k
views
1 answers
0 votes
Which of the following transitions are not possible? (Assume resource preemption is not allowed)A) 2 and 4B) 3 and 5C)4 and 5D)3 and 5if resource preemption is not allowed then answer should be A) but answer given is D) how it is possible?
#2875
3.5k
views
1 answers
7 votes
State the difference between livelock and spinlock.
#2876
193
views
0 answers
0 votes
WHICH of the following is true about the above schedules??
#2877
328
views
0 answers
0 votes
How many process are deadlocked?
#2878
306
views
1 answers
0 votes
s = 0 initiallyA : down(s) B : down(s) CS CS up(s) ... operations. Also nowhere the value of s is stored in memory here. But the answer given is 3. What concept am I missing?
#2879
1.2k
views
2 answers
1 votes
Consider a paged virtual memory system with 32-bit virtual address and 1KB pages. Each PTE requires 32 bits. It is desired to limit the page table size to one ... If the bottom level page table has 2^6 entries how many pages are possible?
#2880
2.1k
views
2 answers
0 votes
If holes are half as large as processes, the fraction of memory wasted in holes is 1/5 or 1/3