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Q. What is the purpose of system calls? Answer: System calls permit user-level processes to request services of the operating system.
1. What must a kernel provide for an effective user-level thread implementation? 2. With respect to the quantum q in a scheduling algorithm, explain and discuss the impact of th
How are file sharing and protection implemented? To execute file sharing and protection the system have to maintain more file and directory attributes than are needed on a sing
What does it mean for something to be thread-safe? By saying that X is thread-safe, we mean that if multiple threads use X at the same time, we don't have to worry about concurrenc
UNIX Shell and History feature. 1.Creating a child process. 2.Creating a history feature. With the notes under code. Its exactly "programming project 1 - Unix Shell and History Fea
Explain a boot control block A boot control block can have the information required by the system to boot an operating from that partition. If the disk does not have an operati
Problem: a) Explain physically what occurs when a disk is fragmented. What is the purpose of "defragmenting" a disk? b) What is the idea behind backing up data on a secondar
What is meant by demand paging? Explain. Demand paging is a technique to implement virtual memory. In demand paging simply when a page is required it is brought into memory. As
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What is Multitasking? Multitasking provides power to users by offering them to run multiple applications at once. The applications are loaded into memory and appear to the user
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