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what is the need-to-know principle? why is it important for a protection system to adhere to this principle?
Define the WindowsNT WindowsNT provides a two-level approach to resource management: process and thread. The process is the uppermost level and contains most of the application
How does user specify block to be fetched in direct access? By specifying the relative block number, relative to first block in file, which is block 0.
Define the Sleep (sec) Function Sleep function suspends execution of this process for sec number of seconds. While this function is used in our example for consistency, other f
Explain Rehashing to Handle Collision Rehashing: Re-hashing schemes make use of a second hashing operation while there is a collision. If there is an additional collision, we
What is the purpose of system calls? System calls permit user-level processes to request services of the operating system.
What are the drawbacks of contiguous allocation of disk space? The disadvantages are a. Suffers from internal fragmentation b. Suffers from external fragmentation c. F
A set of methods that allow executing a program which is not completely in memory is called A set of methods that allow executing a program which is not completely in memory
What are the advantages of Linked allocation? The benefits are a. No external fragmentation b. Size of the file does not require to be declared
General Graph Directory A serious trouble with using an acyclic graph structure is making sure that there are no cycles. When links are further added to an existing tree struc
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