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What are two differences among user-level threads and kernel-level threads? Under what circumstances is one type better than the other?
(1) User-level threads are unknown by the kernel, while the kernel is aware of kernel threads.
(2) User threads are listed by the thread library and the kernel schedules kernel threads.
(3) Kernel threads require not be associated with a process while every user thread belongs to a process.
what is secondary storage management
Define process? What is meant by state of a process? Process is a program in implementation. A process in general includes the process stack, which consists temporary data and
Explain about paging? Answer: Paging is a memory-management scheme that permits the physical-address space of process to be noncontiguous. Paging avoids the considerable proble
In a multiprogramming and time sharing environment several users share the system simultaneously .what are two such problems?
Garbage collectors trade space for time. If we collect all the time (which requires a lot of processing time), the GC allocator will use the least memory possible. On the other han
Hierarchical paging method Most modern computer systems maintain a large logical-address space. In this situation the page table itself turns into excessively large. To remedy
with the aid of diagrams describe the following os structures monolithic , layered, client server
What is a file? A named collection of related data explained by the creator, recorded on secondary storage.
What are the different file operations? Create : - Space for the file in the file system update directory table. Write : - file name and data to be written is
Explain in detail about ipc in linux
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