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What is process control block?
Every process is represented in the OS by a process control block. It has many pieces of information associated with an exact process.
People arrive at a barber shop at the rate of one every 4.5 minutes. If the shop is full (it can hold five people altogether), 30% of the potential customers leave and come back i
While it is hard to resolve a deadlock which has been detected, fortunately it is fairly easy to prevent deadlocks from ever happening. The key is that the conditions above for dea
operation policies
Why are segmentation and paging sometimes combined into one scheme? Segmentation and paging are often combined in order to improve upon each other. Segmented paging is helpful
What is an operating system and what are the different types of operating systems? Operating System An Operating System or OS is a software program that allows the compute
What is Two-level directory In the two-level directory structure every user has own user file directory (UFD). When a user jobs begins or a user logs in, the system's master fi
Define a program in execution is known as A program in execution is known as a process
what are disadvantages of using single directory
Utility Programs: those programs which are not the essential part of operating system. But they provide different utilities / features to the users e.g. MS-DOS : Fdisk, FORMAT, AT
What are the five major activities of an operating system in regard to file management? The creation and deletion of files The creation and deletion of directories The s
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