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Q1) Consider a system that uses pure demand paging:
a. When a process first start execution, how would you characterize the page fault rate?
b. Once the working set for a process is loaded into memory, how would you characterize the page fault rate?
c. Assume a process changes its locality and the size of the new working set is too large to be stored into available free memory. What are some options system designers could choose from to handle this situation?
When a page fault occurs, the process requesting the page must block while waiting for the page to be brought from disk into physical memory. Assume there exists a process with five user-level threads where the mapping of user threads to kernel threads is many to one. If one user thread incurs a page fault while accessing its stack, would the other user user threads belonging to the same process also be affected by the page fault (i.e., would they also have to wait for the faulting page to be brought into memory?) Explain.
Computer has 16 pages of virtual address space but only three physical pages frames. Initially physical memory is empty. Program references virtual pages in order 1,2,3,4,5,3,4,1,6,7,8,7,8,9,7,8,9,5,4,5,4,2 Which references a page fault with LRU ..
CPU with interrupt-driven I/O is busy servicing disk request. While CPU is midway through the disk-service routine, another I/O interrupt occurs. What occurs next?
What does fragmented mean in reference to hard drives, and what, if anything, should be done to prevent it. Describe the general path data takes in an application from user input to the computer hardware.
Given that main memory is consisted of three page frames for public use and that seven-page program (with pages a, b, c, d, e, f, g) requests pages in the following order: a, b, a, c, d, a, e, f, g, c, b, g.
Simulate the long-term scheduler, the short-term scheduler and the I/O scheduler of the computer using the First-Come-First-Serve algorithm.
Discuss and provide examples of the following concurrency issues associated with an OS: 1. Mutual exclusion 2. Deadlock 3. Starvation
Using the internet as a source, compile a list of three known vulnerabilities for SQL Server on Windows operating systems and three vulnerabilities for Oracle on Unix.
Write a java program on Professional Expression Assignment
What is the main advantage of multiprogramming How does the distinction between the monitor mode and user mode function as a rudimentary form of protection (security) system What is the difference between a trap and an interrupt? What is the u..
n a competitive market place (pure competition) is it possible to continually sell your product at a price above the average cost of production.
Give a solution using Monitor that is starvation-free. What would be value of semaphore before entering into Critical Section and after leaving it.
Implement the parser in a separate file. Implement the main parser function in a separate file main.c
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