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A swapping system eliminates hole by compaction. assuming a random distribution of many holes and many data segments and a time to read or write a 32-bit memory word of 10 nsec, about how long does it take to compact 128 MB? for simplicity, assume that word 0 is part of a hole and that the highest word in memory contains valid tries are needed in the page table if traditional(one-level) paging is used? how many page table entries are needed for two-level paging, with 10 bits in each part?
Define the term context switch. Explain how context switching takes place. (use a diagram, with two processes)
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 ..
Write a multi-threaded program to solve producer and consumer problem
Analyse the different methods for collecting data Explain by taking examples 3 types of Sampling techniques.
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 and provide examples of the following concurrency issues associated with an OS: 1. Mutual exclusion 2. Deadlock 3. Starvation
The purpose of this program is to change such that it makes use of the IPC facilities provided by UNIX.
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.
Select one of two possible short reports, Subject 1. Page Replacement Algorithms and Block Caching, Subject 2. Storing Blocks and Remembering Where You Stored Them
What is race condition in this protocol?debitcard machine determine current value of card in dollars which is stored in value x.
i. Deadlock avoidance ii. Deadlock prevention and iii. Deadlock detection
Give three technical merits of UNIX b) Differentiate between "clustered systems" and "real-time systems". c) Describe the purpose of using "trust relationship"
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