Most viewed questions under tag os

+2 votes

1 answer

Which data structure is used to store a file into memory and why?

posted Nov 1, 2013 by Meenal Mishra

+1 vote

1 answer

How sbrk and mmap system calls are functionally different ?

posted Jun 22, 2014 by Ganesh

+3 votes

1 answer

What is the meaning of Reentrancy in operating system?

posted Nov 21, 2013 by Luv Kumar

+2 votes

1 answer

What are the various states of a process?

posted Jul 13, 2015 by anonymous

+7 votes

1 answer

How linux mutex is differ from mutex in VxWorks ??

posted Oct 21, 2013 by Vikas Upadhyay

+4 votes

2 answers

How can you change the priority of threads?

posted Sep 21, 2013 by Giri Prasad

+2 votes

1 answer

How thread acquires mutex lock ?

posted Dec 2, 2014 by Bheemappa G

0 votes

1 answer

How same OS works for different processor architecture?

posted Nov 2, 2015 by Chirag Gangdev

+2 votes

1 answer

OS: What is the orphan process and how it can be created ?

posted May 8, 2014 by Ganesh Kumar

+2 votes

1 answer

How function pointers are shared across different processes?

posted Sep 29, 2013 by Ganesh Kumar

+3 votes

0 answers

What is a PCB i.e. Process Control Block in context of OS why it is needed and what are the advantage of it?

posted Jul 14, 2015 by anonymous

+1 vote

1 answer

What is virtual memory and why it its required in an OS?

posted Jul 25, 2015 by anonymous

0 votes

1 answer

Linux : What is address space layout randomization in linux ?

posted Jul 4, 2014 by Sachidananda Sahu

+3 votes

1 answer

How much memory calloc and malloc can allocate ?

posted Oct 18, 2013 by Neeraj Mishra

+4 votes

1 answer

Mutex unlock from different thread?

posted Oct 14, 2013 by Vikas Upadhyay

+1 vote

1 answer

what is meant by scheduling?

posted Oct 3, 2013 by Giri Prasad

+3 votes

0 answers

What is page cannibalizing ?

posted Nov 27, 2014 by Ganesh Kumar

+2 votes

1 answer

Confused with 32/64 bit HW, OS and Binary, Listed few queries in description

posted Aug 3, 2018 by anonymous

+1 vote

1 answer

What is starvation in context of multi-threading?

posted Apr 18, 2016 by anonymous

0 votes

0 answers

OS: Is there any technique to avoid internal fragmentation and which are all OS use such technique ?

posted Jun 2, 2014 by Vikram Singh

+3 votes

1 answer

Spinlocks should be avoided in uniprocessor contexts. Why is this?

posted Dec 2, 2014 by Bheemappa G

+5 votes

2 answers

What are message queues and pipes ?

posted Feb 2, 2014 by Anuj Yadav

0 votes

1 answer

What are the various Coffman's conditions that can lead to a deadlock?

posted Jan 4, 2016 by Latha

+2 votes

1 answer

NTP : How does a system (client) synchronize with a NTP server at the granularity of microseconds ?

posted May 4, 2014 by Vimal Kumar Mishra

+8 votes

2 answers

Why there is two part of data section (UnInitialized and Initialized) ??

posted Oct 1, 2013 by Vikas Upadhyay

+4 votes

1 answer

Why Android can not be treated as a standalone OS for a PC?

posted Oct 30, 2013 by Sonu Jindal

+1 vote

1 answer

What is the concept of paging in context of Operating System?

posted Sep 16, 2014 by Varnita Chaudhari

+5 votes

1 answer

what is the difference between spin lock and condition mutex ??

posted Oct 26, 2013 by Vikas Upadhyay

+2 votes

0 answers

What is the major difference between Normal OS and RTOS?

posted Oct 3, 2013 by Giri Prasad

0 votes

1 answer

Does anyone explain md5sum and chksum in Unix file system

posted Jul 5, 2014 by Amit Kumar Pandey

+2 votes

1 answer

What does mean by dual-mode operation in the context of operating system ?

posted Dec 11, 2014 by Ganesh Kumar

+4 votes

1 answer

What is the difference between RUDP and UDP?

posted Nov 8, 2013 by Vikas Upadhyay

0 votes

1 answer

What are global and local page replacements?

posted Aug 11, 2014 by Rahul Singh

0 votes

2 answers

OS: Does the stack always grow in upward direction or it is system dependent ?

posted Oct 1, 2016 by Vikram Singh

+2 votes

1 answer

what is reentrancy in the context of operting system ?

posted Sep 5, 2013 by Ganesh Kumar

0 votes

1 answer

What is the difference between fork and vfork system calls ?

posted Aug 29, 2014 by Neelam

0 votes

1 answer

What is Semaphore, what is significance of .sem file created?

posted Jun 22, 2014 by Amit Kumar Pandey

+1 vote

1 answer

Which RTOS supports Non-Preemptive scheduling? Why other scheduling methods are supported by such Oses?

posted May 9, 2014 by Prachi Sharma

+3 votes

2 answers

What is Round Robin Scheduling for processes in an Operating System and why this is a preferred choice?

posted Jul 15, 2015 by anonymous

+2 votes

1 answer

What are various types of fragmentation in context of operating system?

posted Dec 2, 2013 by anonymous

+2 votes

1 answer

Difference between TSR and TSO program ?

posted Oct 21, 2013 by Neeraj Mishra

0 votes

1 answer

What is meant by arm-stickiness?

posted Aug 27, 2014 by Neelam

0 votes

1 answer

What is the concept of Reentrancy in context of operating system please explain in detail?

posted Jan 4, 2016 by Latha

+1 vote

1 answer

What is priority inversion in the context of operating system ?

posted Sep 8, 2013 by Vimal Kumar Mishra

+2 votes

1 answer

Linux: How to check a particular port is already being used by some executable ?

posted Apr 29, 2014 by Harshita

+3 votes

2 answers

WAP to check that system is 32 bit or 64 bit ?

posted Nov 8, 2013 by Anuj Yadav

+4 votes

1 answer

How mutual exclusion will be ensured in Multi-core processors?

posted Sep 23, 2013 by Arvind Singh

+1 vote

1 answer

What are the functionality performed by the OS after executable file is created of your code.

posted May 5, 2016 by anonymous

+1 vote

1 answer

What is the difference between Thread safety vs Re entrancy

posted Jun 21, 2014 by Amit Kumar Pandey

+1 vote

1 answer

OS: Difference between segmentation and paging ?

posted Jun 3, 2014 by Vikram Singh