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How the Nested Macro calls are expanded
LIFO (Last in First out)
Linked allocation With linked allocation, every file is a linked list of disk blocks; the disk blocks might be scattered anywhere on the disk. The directory has a pointer to th
cpu protection in linux
Describe Three major roles of operating systems in business computer systems
Define spooling. A spool is a buffer that holds output for a device, like printer, that cannot accept interleaved data streams. When a request finishes printing, the spooling s
Define Virtual memory Virtual memory is employed in all major commercial operating systems
The Most comman difference are given below System calls are heavy. While a procedure call can generally be performed in a few system instructions, a system call needs the c
Define caching. A cache is a region of fast memory that holds copies of data. Access to the cached copy is well-organized than access to the original. Caching and buffering are
Q. What merit is there in having different time-quantum sizes on different levels of a multilevel queuing system? Answer: Processes that require more frequent servicing for ins
Write a Perl script assignGrades.pl to assign letter grades to the students.
What is multiprogramming? Multiprogramming: The management of many processes within a single processor system. Operating systems such like UNIX provide multiprogramming for sha
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