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Virtual file systems
The file-system execution having of three major layers. The first layer is the file-system interface, based on the open, read, write and close calls and file descriptors.
The question of fairness, regarding page eviction, is a hard one. How do we decide what is fair? Many operating systems use global LRU, where pages from all processes are managed t
What is independent process? A process is independent it cannot influence or be affected by the other processes implementing in the system. Any process does not share data with
List the Coffman's conditions that lead to a deadlock. Mutual Exclusion : Only one process might be use a critical resource at a time. Hold & Wait: A process may be alloc
Q. What is the use of system calls? Answer: System calls permit user-level processes to request services of the operating system.
Explain the Request/Response Interface Many issues are involved in providing a procedural interface for client functions to interact with server components. First off, since
Question: (a) Red Hat Linux is distributed under the Open Source agreement. Explain what you understand by Open Source distribution system. (b) Write a short note on the L
Describe paging technique used in UNIX systems. When a process begin in UNIX, not every its memory pages are read in from the disk at once. In its place, the kernel loads into
Q. The term "fast wide SCSI-II" signifies a SCSI bus that operates at a data rate of 20 megabytes per second when it moves a packet of bytes among the host and a device. Presume t
Q. What is the effect of permitting two entries in a page table to point to the same page frame in memory? Describe how this effect could be used to decrease the amount of time ne
Is disk scheduling, other than FCFS scheduling, useful in a single-user environment? Explain your answer. In a single-user environment, the I/O queue usually is blank. Requests
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