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Explain multilevel feedback queue in detail
- number of queues
- scheduling algorithms for each queue
- method used to verify when to upgrade a process
- method used to verify when to demote a process
Some CPUs provide for more than two modes of operation. What are two possible uses of these multiple modes?
The procedure for handling the page fault is as follows 1. We check the internal table to verify whether the reference was valid or invalid. 2. If the reference was invalid,
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
Q. The term "fast wide SCSI-II" signifies a SCSI bus that operates at a data rate of 20 megabytes per second when it moves a packet of bytes among the host and a device. Presume t
Briefly discuss on real-time scheduling? It is divided into two types. Hard real-time systems are needed to complete a critical task within a guaranteed amount of time. T
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
Virtual file systems The file-system execution having of three major layers. The first layer is the file-system interface, based on the open, read, write and close calls and fi
importance of Operating system in modern computers. Also explain various functions & types of operating systems
Explain Swapping Swapping is a method of temporarily removing inactive programs from the memory of computer system.
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 th
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