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Explain about demand paging?
A demand paging system is same to a paging system with swapping. Processes reside on secondary memory. When we require executing a process, we change it into memory.
Explain the steps in deadlock recovery. a) Exterminate off all processes involved - drastic. b) Exterminate off one at a time till deadlock gone - select a victim.
Second-Chance algorithm When a page has been selected, we inspect its reference bit. If the value is 0, we proceed to replace this page. If the reference bit is set to 1, thoug
How can an index file be used to speed up the access in direct-access files? Have an index in memory; the index gives the key and the disk location of its corresponding record.
Explain fixed partitioning. Partitioning are the simpler techniques that don't involve virtual memory. Partitioning has been used in numerous variations in operating systems.
Q. Show that a few schedules are possible under the two-phase locking protocol however not possible under the timestamp protocol and vice versa. Answer: A schedule that is auth
What are the various file operations? The six basic file operations are Creating a file Reading a file Writing a file Repositioning within a file Tr
When programming with threads, there are three very common mistakes that programmers often make: 1. locking twice (depending on the system and type of lock, can cause crashes, h
A set of methods that allow executing a program which is not completely in memory is called A set of methods that allow executing a program which is not completely in memory
describe main points of multiuser and multi tasking operating systems.
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