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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 OPT in any real system. We can, however, run OPT on a saved trace of memory accesses, to measure how our real algorithm compares with OPT for a given trace.
Describe Three major roles of operating systems in business computer systems
Explain the steps in deadlock recovery. a) Exterminate off all processes involved - drastic. b) Exterminate off one at a time till deadlock gone - select a victim.
What are the different thread levels? There are two broad type of thread implementation: User-Level Threads -- Thread Libraries. Kernel-level Threads -- System Calls.
Developing Code with Threads Writing code to support a thread-based implementation is very straightforward. Simple APIs are presented to the developer for each threads package.
Explain multilevel queue scheduling and multilevel feedback queue scheduling #Minimum 100 words accepted#
Explain the different sections of a process. Entry section Critical section Exit section Remainder section Consider a system inclusive of n processe
IMPLEMENTATION OF SEGMENTATION WITH AN EXAMPLE Segmentation is a memory-management scheme that represents the user view of memory. A logical address space is the collection of
Q. Is there any way to execute truly stable storage? Describe your answer. Answer: Truly steady storage would never lose data. The fundamental technique for steady storage is
Gopher Gallery consists of a shopping mall and a cart ride that covers the 150 acre habitat. There are m visitors and n single-person vehicles. Visitors stroll around the mall at
Q. Consider the two-dimensional array A: int A[][] = new int[100][100]; Whereas A [0][0] is at location 200 in a paged memory system with pages of size 200. A little process
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