Register

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

$$\scriptsize{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline
\textbf{Year}& \textbf{2022} & \textbf{2021-1}&\textbf{2021-2}&\textbf{2020}&\textbf{2019}&\textbf{2018}&\textbf{2017-1}&\textbf{2017-2}&\textbf{2016-1}&\textbf{2016-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}
\\\hline\textbf{1 Mark Count} & 2 &4&2&2&2&3&2&2&1&1&1&2.1&4
\\\hline\textbf{2 Marks Count} & 4 &1&3&4&4&3&2&2&4&3&1&3&4
\\\hline\textbf{Total Marks} & 10 &6&8&10&10&9&6&6&9&7&\bf{6}&\bf{8.1}&\bf{10}\\\hline
\end{array}}}$$

Filter

Most answered questions in Operating System

5 votes
8 answers
23
Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 39 (Page No. 177)
Consider the following piece of C code: void main( ) { fork( ); fork( ); exit( ); } How many child processes are created upon execution of this program?
Consider the following piece of C code: void main( ) { fork( ); fork( ); exit( ); }How many child processes are created upon execution of this program?
User Avatar
24 votes
8 answers
24
GATE CSE 2019 | Question: 17
The following C program is executed on a Unix/Linux system : #include<unistd.h> int main() { int i; for(i=0; i<10; i++) if(i%2 == 0) fork(); return 0; } The total number of child processes created is ________________ .
The following C program is executed on a Unix/Linux system :#include<unistd.h int main() { int i; for(i=0; i<10; i++) if(i%2 == 0) fork(); return 0; }The total number of ...
User Avatar
11 votes
8 answers
27
how many process created?
Consider the following Pseudo code main() { int t1=0,t2=0,t3=0; t1=fork(); t2=fork(); if(t1!=0) { t3=fork(); printf("0"); } } Find the total number of processes that will be created by the above program execution.
Consider the following Pseudo codemain() { int t1=0,t2=0,t3=0; t1=fork(); t2=fork(); if(t1!=0) { t3=fork(); printf("0"); } }Find the total number of processes that will b...
User Avatar
54 votes
8 answers
28
GATE IT 2007 | Question: 11
Let a memory have four free blocks of sizes $4k$, $8k$, $20k$, $2k$ ... $J7$ will be completed will be $16$ $19$ $20$ $37$
Let a memory have four free blocks of sizes $4k$, $8k$, $20k$, $2k$. These blocks are allocated following the best-fit strategy. The allocation requests are stored in a q...
User Avatar
1 votes
7 answers
33
ISRO2018-61
The Operating System of a computer may periodically collect all the free memory space to form contiguous block of free space. This is called: Concatenation Garbage Collection Collision Dynamic Memory Allocation
The Operating System of a computer may periodically collect all the free memory space to form contiguous block of free space. This is called:ConcatenationGarbage Collecti...
User Avatar
28 votes
7 answers
34
GATE CSE 2017 Set 2 | Question: 33
A system shares $9$ ... describes current state of the system? Safe, Deadlocked Safe, Not Deadlocked Not Safe, Deadlocked Not Safe, Not Deadlocked
A system shares $9$ tape drives. The current allocation and maximum requirement of tape drives for that processes are shown below:$$\begin{array}{ccc} \textbf{Process} &...
User Avatar
48 votes
7 answers
36
GATE CSE 2017 Set 1 | Question: 18
Threads of a process share global variables but not heap heap but not global variables neither global variables nor heap both heap and global variables
Threads of a process shareglobal variables but not heapheap but not global variablesneither global variables nor heapboth heap and global variables
User Avatar
1 votes
7 answers
37
Conceptual question: What is the difference between program and process?
Conceptual question: What is the difference between program and process? any simple ,clear answer plz..
Conceptual question:What is the difference between program and process?any simple ,clear answer plz..
User Avatar
9 votes
7 answers
39
ISRO2016-47
A system has 3 processes sharing 4 resources. If each process needs a maximum of 2 units, then Deadlock can never occur Deadlock may occur Deadlock has to occur None of these
A system has 3 processes sharing 4 resources. If each process needs a maximum of 2 units, thenDeadlock can never occurDeadlock may occurDeadlock has to occurNone of these...
User Avatar
3 votes
7 answers
40
ISRO2011-55
There are three processes in the ready queue. When the currently running process requests for I/O how many process switches take place? 1 2 3 4
There are three processes in the ready queue. When the currently running process requests for I/O how many process switches take place?1234
User Avatar
Page: