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Consider a disk system which contains the following parameters, Rotational speed 7200 rpm, 30000 tracks/platter sectors 600/track. Seek time 1 ms for every 100 tracks traversed.Initial track position is 0. Calculate average seek time & rotational latency.
How many page faults would occur under pure demand paging (all frames are initially empty), assuming four frames are available, under FIFO, LRU.
Explain a complication that concurrent processing adds to an operating system.
Intermediate Level Tasks : Below is a simple program. It creates 2 threads. The first thread keeps printing out X on the screen, and the second thread keeps printing out O on the screen.
Implement the parser in a separate file. Implement the main parser function in a separate file main.c
The purpose of this program is to change such that it makes use of the IPC facilities provided by UNIX.
Discuss and provide examples of the following concurrency issues associated with an OS: 1. Mutual exclusion 2. Deadlock 3. Starvation
Assume that 80 percent of the accesses are in the associative memory and that, of the remaining, 10 percent (or 2 percent of the total) cause page faults.What is the effective memory access time?
What would you do to influence the procurement process for both platforms (hardware & OS, such as desktops, laptops, servers, etc.) and application software?
When a process first start execution, how would you characterize the page fault rate? Once the working set for a process is loaded into memory, how would you characterize the page fault rate?
What is minimum number of page faults for the optimal page replacement strategy? Please show how the page is placed and how page faults occur.
Give a solution using Monitor that is starvation-free. What would be value of semaphore before entering into Critical Section and after leaving it.
Discuss challenges that handheld devices provide for computer forensics. Compare the forensic tools for UNIX environments (e.g, the Sleuth and TCT) with tools for Windows environments
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