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Q. Why do several systems store the operating system in firm ware and others on disk?
Answer: For certain devices such like handheld PDAs and cellular telephones a disk with a file system may be not being available for the device. In these circumstances the operating system must be stored in firmware.
Define secondary memory. This memory holds those pages that are not there in main memory. The secondary memory is usually a high speed disk. It is called as the swap device, an
what is application software?
describe competing process
WHAT IS ACYCLIC GRAPH DIRECTORY
why we say " OS is a resource allocator" and “OS is a control program"?
How is a process chosen for being swapped either in or out? Swap out: a. If the process is idle. b. If process has been in main memory for a long time.
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
There are three kinds of Data Abstraction: Physical level: The minimum level of abstraction defines how data are saved. Logical level: The next bigger level of a
In a multiprogramming and time-sharing environment, several users share the system simultaneously. This situation can result in various security problems. a
Do ratio analysis by comparing the four companies financial statements, analysis and interpretation on the four-basic group : (Refer to attachment A) Liquidity ratio Asset
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