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Given a cache access time of 20ns, a main memory access time of 1000ns, and a cache hit ratio of 90 percent. Assuming fetches to main memory are started in parallel with look-ups in cache, calculate the effective (average) access time of this system. (There is no virtual memory on this system -- no page table, no TLB).
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.
Every day at 2PM a client's computer at work reboots itself. You have made sure the power management settings in the BIOS and in the Windows Control Panel are not responsible.
i. Deadlock avoidance ii. Deadlock prevention and iii. Deadlock detection
The premise of Project 2 is to create your own shell. Your shell will be launchable from a terminal window and act similar to the existing shell.
How many page faults would occur under pure demand paging (all frames are initially empty), assuming four frames are available, under FIFO, LRU.
What are the three different categories of command, support your answer by giving three examples. Give three good reasons, with valid explanation, to justify why partitioning hard disk provides a variety of advantages. Explain the client/server..
Write a multi-threaded program to solve producer and consumer problem
Suppose an operating system maps user-level threads to the kernel using the many-to-many model and the mapping is done through LWPs.
The purpose of this program is to change such that it makes use of the IPC facilities provided by UNIX.
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?
Write a bash shell script filestatic. The script should examine the number files in directories given as arguments (parameters) to this script.
Discuss an application that would benefit from the use of barrier synchronization
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