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Q. What are the major differences between capability lists and access lists?
Answer: An access list is a list for each object consisting of the domains with a nonempty set of access rights for that object. An ability list is a list of objects and the operations allowed on those objects for each domain.
How many disk operations are needed to fetch the i-node for the file /usr/ast/courses/os/handout.t? Assume that the i-node for the root directory is in memory, but nothing else alo
Q. The accelerating search for described in subsequent exercise is typical of hard-disk drives. By contrast floppy disks and several hard disks manufactured before the mid-1980s t
Many-to-One Model (Green Threads) Implementations of the many-to-one model a lot of user threads to one kernel thread permit the application to create any number of threads tha
Problem: a) The CPU can access 2 storage devices directly. What are these 2 storage devices? b) Define 2 key issues involved in memory management. c) How do processes sha
Concept of Reentrancy It is a useful, memory-saving method for multiprogrammed timesharing machines. A Reentrant method is one in which multiple clients can share a singl
LRU page replacement In slightest recently used page replacement algorithm we will replace that page that hasn't been used for the longest period of time. This is similar as an
properies of Batch oriented and interactive operating system.
best fit
As we have discussed, page tables map virtual page addresses to physical page addresses. One of the advantages of using virtual addresses is that we can achieve complete separation
Q. What is the use of the command interpreter? Why is it generally separate from the kernel? Answer: It reads commands from the user or else from a file of commands and execu
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