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Placement algorithms:calculate where in available real-memory to execute a program. Common functions are next-fit, first-fit, and best-fit.
Replacement algorithms:are needed when memory is almost full, and one program requires to be swapped out to accommodate a new process. The replacement algorithm calculates which the partitions to be swapped out are.
What are the various categories of software? System software Application software Engineering/Scientific software Embedded software Web Applications Artificial I
The producer-consumermodel above has a standard human analogy of an assembly line. Humans have specialized skills, however, whereas threads running the same program do not need to
Explain external fragmentation? External fragmentation is the process where the free space and the space still available for use, in a piece of storage become separated into ma
Q. Define the difference among pre-emptive and non pre-emptive scheduling. Answer: Pre-emptive scheduling permits a process to be interrupted in the midst of its execution ta
Q. Which of the subsequent programming techniques and structures are good for a demand-paged environment? Which aren't good? Describe your answers. a. Stack b. Hashed symbol
What are overlays? To enable a process to be larger than the amount of memory allocated to it, overlays are used. The idea of overlays is to keep in memory only those instructi
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 deadlock p revention methodologies? a. Necessitate that processes request all resources before starting - if cannot be granted don't run. b. Process
Optimal page replacement An optimal page replacement algorithm has the least page fault rate of all algorithms. The algorithm states that put back the page that will not be us
What is Directory? The device directory or simply called as directory records information-such as name, location, size, and type for all files on that certain partition. The d
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