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Problem:
a) Explain physically what occurs when a disk is fragmented. What is the purpose of "defragmenting" a disk?
b) What is the idea behind backing up data on a secondary storage?
c) Among the different software, operating systems, applications, utilities and data, which one is the most valuable and therefore requires frequent back ups? Justify your answer.
d) Is Anti Virus a system utility? Why is the Anti Virus not embedded in the operating system when the latter is installed
what are the main advantages of multiprogramming
Buddy system of memory allocation Free memory is used to maintain in linked lists, each of similar sized blocks. Every block is of size 2^k. When some memory is needed by a th
Explain hierarchy level directory
Ask question #Minimuexplain the programable clock modes in a computer system m 100 words accepted#
Regard as a computer system that runs 5000 jobs per month with no deadlock-prevention or deadlock-avoidance scheme. Deadlocks take place about twice per month and the operator must
DIFFERENT MULTITHREADING MODELS Multithreading Models the majority multithreading models fall into one of the following categories of threading implementation: 1. M
What are the three main activities of an operating system in regard to memory management? Keep track of which parts of memory are now being used and by whom. Decide which pr
The term ‘page traffic’ explains Page traffic’ explains the movement of pages in and out of memory.
what is semantics of system call execution?
Additional-reference-bits algorithm We can keep an 8-bit byte for every page in a table in memory. The operating system shifts the reference bits right 1 bit, discarding the lo
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