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Q. What are the tradeoffs concerned in rereading code pages from the file system versus using swap space to store them?
Answer: If codes pages are accumulate in swap space they can be transferred more quickly to main memory (because swap space allocation is tuned for faster performance than general file system allocation). Using swap space is able to require start-up time if the pages are copied there at process invocation rather than just being paged out to swap space on demand. As well more swap space must be allocated if it is used for both codes as well as data pages.
What is the use of fork and exec system calls? Fork is a system call by which a latest process is created. Exec is also a system call, which is used after a fork by one of the
NEXT FIT ALGORITHM Here scanning starts from the first fit position and then it finds the next position which is large sufficient to hold the process. Thus the name next fit.
What are the main differences between operating systems for mainframe computers and personal computers? The design goals of operating systems for those machines are quite diffe
We have stressed the need for an operating system to make efficient use of the computing hardware. When is it appropriate for the operating system to forsake this principle and to
Q. Explain about Functions of Operating System? Functions of Operating System Operating system performs 3 functions as follows: 1. Convenience: Operating System mak
What is linked allocation, as detailed in text? Directory has pointers to first and last blocks of file. Every block of file (except last) has pointer to the next block.
Q. a number of systems automatically delete all user files when a user logs off or a job terminates unless the user explicitly requests that they be kept other systems keep all fil
Ask question #Minimum 100 words accDefine Hashing System. Describe the Hashed page table with example and mapping figure.
Clocks in distributed systems : a. Why are clocks difficult to synchronize in distributed systems? b. What features in a system assume that the clocks are (reasonably) synchr
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
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