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How free-space is managed using bit vector implementation?
The free-space list is implemented as a bit map or bit vector. Each block is shown by 1 bit. If the block is free, the bit is 1; if the block is allocated, the bit is 0.
Q. In a ring-protection system the level 0 has the greatest access to objects and level n (greater than zero) has fewer access rights. The access rights of a program at a partic
How File record length should be chosen File record length should be selected to match the data characteristics
Suppose we have 3 processes running at the same time as shown in the following table. Each resource only has one instance. Show a possible scenario of resource allocation that r
What is the benefits OS co-operating process? Information sharing. Computation speeds up. Modularity. Convenience.
Single level directory: This is the easiest directory structure. All the files are controlled in the same directory, which is simple to support and understand. Few of the li
What is Two-level directory In the two-level directory structure every user has own user file directory (UFD). When a user jobs begins or a user logs in, the system's master fi
What is preallocation? Why do it? Allocating space for a file before making the file to allow for expansion. This reserves space for a certain file so that other files can't gr
what is secondary storage management
At the end of this lecture, and into the next lecture, we will discuss the last major type of logical error that can occurwhen programming with threads. A deadlock occurswhen two t
how do semaphores help us in eliminating deadlock conditions?
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