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All MCQ for Operating System for test preparation of Public Service Commission, FPSC, PPSC, SPSC, NWFP PSC, Blochistan PSC, CSS, PCS, PMS for Lecturer and Subject Specialist,GAT, GRE (NTS)test
___________ is called virtual memory.
|
Option 1
|
Primary memory |
|
Option 2
|
The illusion of an extremely large memory |
|
Option 3
|
an extremely large secondary memory used in super computer |
|
Option 4
|
none of these |
_____________________ is called overlay.
|
Option 1
|
a specific memory location |
|
Option 2
|
a single contiguous memory that was used in the olden days for running large programs by swapping. |
|
Option 3
|
overloading the system with many user files |
|
Option 4
|
None of these |
At a particular time, the value of a counting semaphore is 10. It will become 7 after__________.
|
Option 1
|
5 V operations and 2 P operations |
|
Option 2
|
3 P operations |
|
Option 3
|
All of these |
|
Option 4
|
None of these |
With a single resource, deadlock occurs
|
Option 1
|
if there are only two processes competing for that resource |
|
Option 2
|
if there are more than two processes competing for that resource |
|
Option 3
|
All of these |
|
Option 4
|
None of the these |
_________ is called kernel.
|
Option 1
|
the set of primitive functions upon which the rest of operating system functions are built up. |
|
Option 2
|
considered as the critical part of the operating system |
|
Option 3
|
All of these |
|
Option 4
|
none of the these |
The process goes from the RUNNING stat to the ______________ state. When in a time-sharing operating system, the time slot given to a process is completed.
|
Option 1
|
READY |
|
Option 2
|
BLOCKED |
|
Option 3
|
SUSPENDED |
|
Option 4
|
STOP |
Mutual exclusion problem occurs_____________
|
Option 1
|
between processes that use share resources |
|
Option 2
|
between two disjoint processes which do not interact each other |
|
Option 3
|
between processes that do not use same resource |
|
Option 4
|
none of the these |
