GeeksforGeeks

A thread is usually defined as a ‘light weight process’ because an operating system (OS) maintains smaller data structures for a thread than for a process. In relation to this, which of the followings is TRUE?
(A) On per-thread basis, the OS maintains only CPU register state
(B) The OS does not maintain a separate stack for each thread
(C) On per-thread basis, the OS does not maintain virtual memory state
(D) On per thread basis, the OS maintains only scheduling an...

can anyone explain me ...how to make a process as daemon process...
???

what is the difference between 32 bit and 64 bit operating system?
what is the difference between 32 bit and 64 bit microprocessors?
what is the difference between 16 bit and 32 bit compilers?
is there anything else related to this 32 bit and 64 bit thing?
what is the relation between all?

how does execlp() function works in unix. ??
can anyone explain it in detail

what is piped stream? give the example in detail

What is the usage of getopts in unix ?

A thread is usually defined as a ‘light weight process’ because an operating
system (OS) maintains smaller data structures for a thread than for a process. In
relation to this, which of the followings is TRUE?
(A) On per-thread basis, the OS maintains only CPU register state
(B) The OS does not maintain a separate stack for each thread
(C) On per-thread basis, the OS does not maintain virtual memory state
(D) On per thread basis, the OS maintains on...

Let the time taken to switch between user and kernel modes of execution be t1
while the time taken to switch between two processes be t2. Which of the
following is TRUE?
(A) 1 2 t t >
(B) 1 2 t t =
(C) 1 2 t t <
(D) Nothing can be said about the relation between t1 and t2

How to crash your system immediately?

what is shared library?
With small c program implement Dll?

. How many processes are created in this snippet?
Main()
{
Fork();
Fork() && fork () || fork ();
Fork ();
}

a. 15
b. 19
c. 21
d. 27
e. 31

I'm doing my homework and I've already found out some things about synchronisation issues but if anyone could tell me in a little more detail why synchronisation between different processes belonging to the same or different programs is an important task in parallel computing?

Thanks in advance! x

file which has maximum link in the unix file system?

Please answer following questions.
1) In PCB where will be SP and PC?
2) After termination of the process whether PCB is deleted are not? Can OS kernel can assign terminated PID to new Process?
3) How come parents come to know who are all its child, and how child will come to know the parent?
4) Maximum for a parent how many child you can create?
5) Where the kernel will give space to PCB?
6) What is difference between Zombie process and daemon process?

if we consider a page existing in memory then on a CPU cache miss ,for co-processors sharing multiple levels of caching (not involving there local caches) what is the exact procedure to avail that page to CPU?
1. the page has to travel up through all shared level caches and then made available to CPU or
2. page from main memory directly goes to local cache and then cache levels are updated

if we consider a page existing in memory then on a CPU cache miss ,for co-processors sharing multiple levels of caching (not involving there local caches) what is the exact procedure to avail that page to CPU?
1. the page has to travel up through all shared level caches and then made available to CPU or
2. page from main memory directly goes to local cache and then cache levels are updated

one system API available setOStimer(time n, function ptr, function arg)
it sets time for n sec. after expiration of timer it calls function.
if another timer set with setOStimer, it will erase previously sets timer.
Ex. at t = 0, setOStimer(5,fn,arg)
at t = 4, setOStimer(10,fn1,arg1)
now first timer removed.
Question is using this API, write own API setTimer(), it will use given API. So that it will not erase previously set timer.