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List three ways of allocating storage, and give advantages of each.
a. Contiguous allocation. Fastest, if no changes are to be made. Also simplest for random access files.
b. Linked allocation. No external fragmentation. File can grow without complications.
c. Indexed allocation. Supports direct access without external fragmentation.
Processes and threads each have their place in multi-programming, generally to hide latency and to maximize CPU utilization. With the continuing spread of multi-core processors in
defination
explain how response time are reduced by allowing time sharing on top of multiprogramming
What is Single-level Directory All files are constrained in the similar directory, which is simple to support and understood. One limitation is when the number of files enhance
Recognition of essential syntactic constructs by reductions, this task is carried out by Recognition of essential syntactic constructs by reductions, this task is carried out
Q. Does Windows XP offer any user-mode processes that enable it to run programs developed for other operating systems? Describe two of these subsystems. Answer: Environmental
Describe the purpose of the checkpoint mechanism. How habitually must checkpoints be performed? Explain how the frequency of checkpoints affects: System performance while no
Most process abstractions support processes being destroyed when the program terminates, or in response to a specific kill directive. There are two common implementations, one a "p
What is contiguous allocation? Allocation of a group of consecutive sectors for a one file.
Allocators can also be used to avoid problems with unsafe languages. C and C++ are pervasive, with huge amounts of existing code. They are also memory-unsafe languages, in that the
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