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What are the three main purposes of an operating system?
_ To give an environment for a computer user to implement programs on computer hardware in a convenient and efficient manner.
_ To allocate the separate resources of the computer as required solving the problem given. The allocation process should be as fair and efficient as possible.
_ As a control program it serves two major functions: (1) supervision of the implementation of user programs to stop errors and improper use of the computer, and (2) management of the operation and control of I/O devices.
Define Instance. An instance is an administrative unit in which components of R/3 systems giving one or more services are grouped together. The services offered by a case are
What are the benefits of thread pools:- The benefits of thread pools are 1. It is usually faster to service a request with an existing thread than waiting to make a thread.
Define spooling. A spool is a buffer that holds output for a device, like printer, that cannot accept interleaved data streams. When a request finishes printing, the spooling s
What advantages are there to this two-level directory? Users are isolated from each other. Users have more freedom in choosing file names.
Describe the internal layout of the file system in windows 2000. The basic entity in NTFS is a volume and a volume is created by the Windows 2000 disk administrator utility and
What is degree of multiprogramming ? Degree of multiprogramming signifies the number of processes in memory. If the degree of Multiprogramming is steady after that the average
describe main points of multiuser and multi tasking operating systems.
What factors are involved in choosing the host operating system?
what is I/O management Linux
Define ‘LRU’ page replacement policy LRU is Least Recently Used page replacement policy.
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