when a process is created using fork(). what is shared
between parent process and child process.
1.Heap 2. stack 3. shared memory segments 4. I/O handles
Answers were Sorted based on User's Feedback
Answer / sushil kumar
(3)shared memory segments
reason:-When a fork() system call is issued, a copy of all
the pages corresponding to the parent process is created,
loaded into a separate memory location by the OS for the
|Is This Answer Correct ?||41 Yes||5 No|
this is correct but partially. there is something called COW(copy on write). stack is not copied until one of them(parent or child) tries to write into it. if the child immediately calls exec then there is not need to copy the stack at all. As practically in most of the cases child process does an exec call, this unnecessary copy of huge stack is avoided by delaying it till its written into.
|Is This Answer Correct ?||11 Yes||3 No|
What do you mean by memory leak?
Explain about linker and the functions executed by them?
Differentiate between swapping and paging.
what is the memory required when a screen has 1024*1280 pixels and each pixel can have around 16 million colors?
what is the place where microsoft outlook express's back up is taken ?
what are multi core operating systems?
List reasons why a Mode switch between threads may be cheaper than a Mode switch between processes.
Explain what is a semaphore?
What is the difference between hard and soft real-time systems?
When does the condition 'rendezvous' arise?
What are co-operating processes?
What is cpu scheduler?