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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.
Describe paging technique used in UNIX systems. When a process begin in UNIX, not every its memory pages are read in from the disk at once. In its place, the kernel loads into
Define dynamic linking. Dynamic linking is same to dynamic loading, rather that loading being postponed unless execution time, linking is postponed. This feature is usually use
Unisex Restroom Problem
Q. Researchers have recommended that instead of having an access list associated with each file (specifying which users can access the file and how) we should have a user control
File Organization * Sequential * Direct * Indexed A file still if it is stored on a magnetic disk or CD-ROM disk may perhaps have a sequential file organiz
RESOURCE ALLOCATION GRAPH When a process Pi wishes an instance of resource type Rj, a request edge is inserted in the resource allocation graph. When this request is able to be
benefits of dynamic linking
Hierarchical paging Single way is to use a two-level paging algorithm, in which the page table itself is also paged. A logical address is separated into a page number and a pag
Define a program in execution is known as A program in execution is known as a process
Now let's implement bounded producer-consumer with semaphores, a Coke machine which is initially empty: semaphore sem_mutex = 1 // binary semaphore for mutual exclusion, 1==unlo
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