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1. A barrier is a synchronization primitive. When created or reset with CreateBarrier(n) or SetBarrier(n), it waits for n processes to call WaitAtBarrier() before the barrier falls. Until the barrier falls, processes that call WaitAtBarrier() must wait; once the barrier falls, all processes waiting at this barrier are allowed to proceed unconditionally. Show how to implement barriers using semaphores. Your solution should avoid busy-waiting. Be explicit about any initializations that you need to assume.
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
Use the semaphore methods to control the concurrency of the solution
Analyse the different methods for collecting data Explain by taking examples 3 types of Sampling techniques.
Virtual machines supported by a host operating system
How many page faults would occur under pure demand paging (all frames are initially empty), assuming four frames are available, under FIFO, LRU.
Construct a resource allocation graph with the following processers and resources, the system consists of four processers P1, P2, P3, and P4 and five resources R1, R2, R3, R4, and R5.
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.
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 ea..
How many page faults are generated by the following arrayinitialization loops, using LRU replacement, and assuming page frame 1 has the process in it, and the other two are initially empty.
In different communications models, communication may take place using either "message passing" or "shared memory". Distinguish between "message passing" and "shared memory", illustrating your answer with a diagram Give three advantages of virt..
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 would you do to influence the procurement process for both platforms (hardware & OS, such as desktops, laptops, servers, etc.) and application software?
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