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Question :
a) What do you understand by a Directory Structure? Support your answer with a diagram.
b) Give an example how Access Lists and Groups are arranged to mode of access for read, write and execute of an object.
c) What do you understand by Virtual File Systems?
d) Describe the efficiency and performance of the File System
Implementation and its structure?
e) Describe briefly two examples of System Threats.
f) How are Threats monitored?
g) What methods are used to monitor Intrusion Detection?
In the mean while the fork() system call the Kernel creates a copy of the parent process's address space and adds it to the child process. But the vfork() system call do no
LRU approximation page replacement In this we are able to use the reference bit associated with the page entry to choose a page to be removed. The various algorithms used for
Central to implementation of a modern memory management system is the page replacement algorithm. Modern virtual memory systems break memory up into pages and map (via a page table
Q. What are the three main activities of an operating system in regard to secondary-storage management? Answer: 1) Free-space management 2) Storage allocation 3) Disk
Q. What is the effect of permitting two entries in a page table to point to the same page frame in memory? Describe how this effect could be used to decrease the amount of time ne
a summary of what operating system do
when demand is 24000 units/year, production rate is 48000 units/year, setup cost is rs 200 per setup, carring cost is rs 20 per units/year, and economic batch quantity is 692.8203
Swapping : Whole process is moved from the swap machine to the main memory for execution. Process size must be equal or less than to the used main memory. It is easier to exe
how the system call is work?
Define the “turn-around” time of a user job Turn- around time is total time taken to execute the job.
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