1. If execution time binding is being used, then a process be swapped to a different memory space.
-
has to be
can never
must
2. Swapping requires a
-
motherboard
keyboard
monitor
3. Which one of the following errors will be handle by the operating system?
-
Uniprogramming systems
Unitasking systems
Uniprocessing systems
4. In operating system, each process has its own ............
-
Open files
Address space and global variables
Pending alarms, signals and signal handlers
5. Which one of the following is the address generated by CPU?
-
physical address
absolute address
logical address
6. Which one of the following is not a real-time operating system?
-
Palm OS
VxWorks
Windows CE
7. Each entry in a segment table has a
-
segment base
segment peak
segment value
8. The segment limit contains the
-
starting logical address of the process
starting physical address of the segment in memory
segment length
9. The offset ‘d’ of the logical address must be
-
greater than segment limit
between 0 and segment limit
between 0 and the segment number
10. If exec is called immediately after forking
-
the program specified in the parameter to exec will replace the entire process
all the threads will be duplicated
all the threads may be duplicated
11. If a process does not call exec after forking
-
the program specified in the parameter to exec will replace the entire process
all the threads should be duplicated
all the threads should not be duplicated
12. When one thread immediately terminates the target thread, it is called
-
asynchronous cancellation
systematic cancellation
sudden termination
13. Cancellation point is the point where
-
the thread can be cancelled – safely or otherwise doesn’t matter
the thread can be cancelled safely
the whole process can be cancelled safely
14. Signals of a given type
-
are queued
are all sent as one
cannot be queued
15. The three ways in which a process responds to a signal are
-
ignoring the signal
handling the signal
performing some default action
16. Signals are identified by
-
signal identifiers
signal handlers
signal actions
17. When a process blocks the receipt of certain signals?
-
the signals are delivered
the signals are not delivered
the signals are received until they are unblocked
18. The maintains pending and blocked bit vectors in the context of each process.
-
cpu
memory
process
19. In UNIX, the set of masked signals can be set or cleared using the function.
-
sigmask
sigmaskproc
sigprocmask
20. To avoid deadlock
-
there must be a fixed number of resources to
resource allocation must be done only
all deadlocked processes must be
21. What is the mounting of file system?
-
creating of a filesystem
deleting a filesystem
attaching portion of the file system into a directory
22. Data cannot be written to secondary storage unless written within a
-
file
swap space
directory
23. Which one of the following is not a valid state of a thread?
-
running
parsing
ready
24. The register context and stacks of a thread are deallocated when the thread?
-
terminates
blocks
unblocks
25. Thread synchronization is required because
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all threads of a process share the same address space
all threads of a process share the same global variables
all threads of a process can share the same files
26. A thread shares its resources(like data section, code section, open files, signals) with
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other process similar to the one that the thread belongs to
other threads that belong to similar processes
other threads that belong to the same process
27. The size of the virtual memory depends on the size of the
-
data bus
main memory
address bus
28. Which of the following scheduling algorithms gives minimum average waiting time?
-
FCFS
SJF
Round-robin
29. ‘Login-ID and Password’ mechanism is implemented in an operating system to ensure which of the following aspects of security
-
Confidentiality
Integrity
Authentication
30. Which one is a memory-management scheme that permits the physical address space of a process to be noncontiguous
-
scheduling
swapping
paging
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