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Q. How Program execute in operating system?
Program execution: Operating system loads a program in memory and executes the program. The program should be able to end its execution either abnormally or normally.
I/O Operation: I/O refers to any file or any specific I/O device. Program may need any I/O device while running. So operating system should provide required I/O.
File system manipulation: Program requires towrite a file or read a file. The operating system gives the permission to program for operation on file.
Define seek time and latency time. The time taken by the head to move to the appropriate cylinder or track is known as seek time. Once the head is at right track, it must wait
How File record length should be chosen File record length should be selected to match the data characteristics
What is the main advantage of multiprogramming? Multiprogramming makes efficient use of the CPU by overlapping the demands for the CPU and its I/O devices from various users. I
Q. Explain Message passing among systems? Communications- Message passing among systems requires messages to be turned into packets of information and sent to the network contr
What is a file? A file is a named collection of related information that is recorded on secondary storage. A file having either programs or data. A file has particular "structu
When a computer is started on, the program that executed first is named the ''operating system.'' It controls pretty much all applications in the computer. This adds who logs in, h
Question: Introduction to Operating Systems a) Define the term ‘Operating System' and identify main functions of an operating system. b) What are the characteristics of a go
Consider a scenario of post mailbox, there are two processes named sender S and receiver R. Both processes can communicate with each other by name along with message. You need to I
What are privileged instructions? Some of the machine instructions that may cause harm to a system are designated as privileged instructions. The hardware permits the privilege
explain how indefinite blocking or starvation occurs..
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