OSG202 Exam Questions and Answers
____ developed the Banker's Algorithm. - ANSWER-Dijkstra
____ gives users the appearance that their programs are being completely loaded in main -
ANSWER-Virtual memory
____ include(s) every peripheral unit in the system such as printers, disk drives, CD/DVD dr...
1. A requests R ; 2. C requests T3. A requests S ; 4. C requests R5. A releases R ; 6. A releases S7. B
requests S ; 8. C requests S9. B requests R - ANSWER✔✔-toicankey The system is deadlock ; toicankey
The system can be resolved by process B attacks the No-Preemption condition
1. A requests R ; 2. C requests T3. A requests S ; 4. C requests R5. A releases R ; 6. A releases S7. B
requests S - ANSWER✔✔-toicankey The system is in safe state ; toicankey All process no deadlock
1. It is a list of memory locations (set of addresses) from 0 to some maximum, which the process can
read and write ; 2. It make the different programs think they have the hardware on their ownWhat's is
it? - ANSWER✔✔-toicankey Address space
1. It uses a table of counters per files. ; 2. Traverse the directory tree, incrementing the counter when
each every i-node in every directory 3. When the checker is all done, it has a list, indexed by i-node
number, telling how many directories contain each file ; 4. It then compares these numbers with the link
counts stored in the i-node themselves Which checking is applied with the above description? -
ANSWER✔✔-toicankey Checking for directory and its file in consistency
1. Map a disk block to a page (s) in memory and page used the file on disk as the backing store ; 2.
Allowing a part of the virtual address space to be logically associated with the fileWhat's is the strategy?
- ANSWER✔✔-toicankey Memory-mapped file
1. Put the argument of called function on the stack ; 2. The interrupt occurs to switch from user mode to
kernel mode3. The system functions are located and executed ; 4. After finished, the interrupt occurs
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