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1. What must a kernel provide for an effective user-level thread implementation?
2. With respect to the quantum q in a scheduling algorithm, explain and discuss the impact of the following on the operating system:
a) q is fixed and identical for all users.
b) q is fixed and unique to each user.
c) q is variable and identical for all users.
d) q is variable and unique to a each user.
3. Arrange the above schemes in question 2 from lowest to highest run-time overhead. Explain your answer.
4. Arrange the above schemes in question 2 from least to most responsive to variations in individual processes and system load. Explain you answer.
Q. Describe the purpose of the open() and close() operations. Answer: The open() operation notifies the system that the named file is about to become active. The c
Determine a policy that is not a valid page replacement policy? RU policy (Recurrently used) is not a valid page replacement policy.
What is a client server system? Centralized systems proceed as server systems to satisfy request generated by client systems Server system is able to be broadly div
What are privileged instructions? Some of the machine instructions that may cause harm to a system are designated as privileged instructions. The hardware permits the privilege
Q. What are the major differences between operating systems for mainframe computers and personal computers? Answer: In general operating systems for batch systems have simpler
Write short note on compression regarding the file system in Windows 2000. NTFS is able to perform data compression on individual files or on all data files in a directory. To
Swapping : Whole process is moved from the swap machine to the main memory for execution. Process size must be equal or less than to the used main memory. It is easier to exe
What is dispatch latency? The time taken by the dispatcher to stop one process and begin another running is known as dispatch latency.
Question: (a) The following table (table 1.0) gives the length of the CPU burst time in milliseconds of processes P 1 to P 4 . Assume the processes arrived in the order P 1 ,
when demand is 24000 units/year, production rate is 48000 units/year, setup cost is rs 200 per setup, carring cost is rs 20 per units/year, and economic batch quantity is 692.8203
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