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Q. What are two dreadful problems that designers should solve to implement a network-transparent system?
Answer: One such issue is making all the processors as well as storage devices seem transparent across the network. In other sense the distributed system must appear as a centralized system to users. The Andrew file system as well as NFS provides this feature the distributed file system appears to the user as a single file system however in reality it may be distributed across a network.
One more issue concerns the mobility of users. We want to permit users to connect to the "system" rather than to a specific machine (even though in reality they may be logging in to a specific machine somewhere in the distributed system).
Relative file organization A relative file is an array of fixed-length slots and the records can be inserted in the first free slot found from the beginning of the file and
Q. Under what conditions do page faults occur? Explain the actions taken by the operating system when a page fault occurs. Answer: A page fault take places when an access to
what is the function of operation management?
What is segmentation? In a segmented memory management scheme a programmer views a program to be collection of program components called as segments. Every segment is a logical
Several schemes available are as follows: Pipes : One-way communication process through which different process can interact. The problem is that the two processes could have
A- In a table format, compare between Programmed I/O, Interrupt -driven I/O, and Direct Memory Access (DMA) in terms of basic idea, Advantages, disadvantages, and the operating en
An operating system provides the environment within that programs are executed. Internally operating systems differ greatly in their makeup because they are organized along many di
Signal handling A signal is used in UNIX systems to inform a process that a particular event has occurred. 1. A signal is produced by the occurrence of a particular event.
Second-Chance algorithm When a page has been selected, we inspect its reference bit. If the value is 0, we proceed to replace this page. If the reference bit is set to 1, thoug
basic advantage of using interrupt initiated data transfer over transfer under program control without an interrupt
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