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What are the functions of virtual file system (VFS)?
a. It separates file-system-generic operations from their execution defining a clean VFS interface. It permits transparent access to different types of file systems mounted locally.
b. VFS is based on a file representation structure, known as a vnode. It having a numerical value for a network-wide unique file .The kernel maintains one vnode structure for every active file or directory.
what are the main advantages of multiprogramming
Explain Process scheduling Process scheduling consists of the subsequent sub-functions: 1. Scheduling : Selects the process to be implement next on the CPU 2. D
explain how response time are reduced by allowing time sharing on top of multiprogramming
how fat file system is organised
Major page fault: If the page is not loaded in memory at the time the fault is stated, then it is named major or hard page fault. The handler in the machine requires to search a
Deadlocks can be detected while the program is running, by running cycle detection algorithms on the graph that de?nes the current use of resources. De?ne this graph as follows:
Q. Advantages and disadvantages of multiprogramming? Advantages 1. High CPU utilization. 2. It appears that many programs are allotted CPU almost concurrently. D
Question : (a) In the demand paging system, when a process tries to access a page that was not brought into memory, a page fault occurs that involves a series of actions. The
4. Describe priority scheduling algorithm. Consider the following set of processes. Show the order in which the algorithm will schedule these processes. Assume preemptive and non-p
In modern operating systems, applications do not directly access the physical memory. Instead, they use so-called virtual memory, where each virtual address is translated to a phys
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