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Explain about threading issues?
The fork and exec system calls
In a multithreaded program of few UNIX systems have chosen to have two versions of fork, one that duplicates each threads and another that duplicates only the thread that raised the fork system call. If a thread raised the exec system call, the program specified in the parameter to exec will change the entire process.
Q. Describe the concept of transaction atomicity? Answer: A transaction is a sequence of read as well as writes operations upon some data followed by a commit operation. If the
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Q. What is the use of system programs? Answer: System programs are able to be thought of as bundles of useful system calls. They provide fundamental functionality to users so
Forking is an important phase of Unix, critical to the support of its design strategies, which encourages the implementation of filters. In Unix, a filter is a process that reads i
Compare user threads and kernel threads. User threads:- User threads are supported above the kernel and are executed by a thread library at the user level. Thread creation
what is ROM bios device driver
Direct communication With direct communication each process that requires to communicate must explicitly name the recipient or sender of the communication. The send and receive
What is the kernel? A more common explanation is that the OS is the one program running at all times on the computer usually known as the kernel, with all else being applicati
What are the hardware and software requirements for virtual memory? The hardware required for virtual memory is a secondary memory and page table. The page table should have th
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