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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 separate functions, but sometimes a region of memory can be used for together purposes.
what are reasons for cooperating processes
Q. What is the major advantage of the layered approach to system design? What are the de-merits of using the layered approach? Answer: As in all cases of modular design as well
Describe the technique of packing. The physical record size will not accurately match the length of the desired logical record and the Logical records may even differ in length
properies of Batch oriented and interactive operating system.
PADM 530. case study part 1
Define the “Throughput” of a system Throughput is Number of programs processed by it per unit time
The optimal replacement policy, called OPT, is to evict the page which will be accessed farthest into the future. Since we can't predict the future precisely, we can't implement OP
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
What is Multitasking? Multitasking provides power to users by offering them to run multiple applications at once. The applications are loaded into memory and appear to the user
how response times are reduced by allowing time sharing on top of multiprogramming
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