41. Preemptive —————-scheduling is sometimes called shortest remaining-time-first
scheduling.
a. First-Come-First-Served (FCFS)
b. Round-Robin
c. Sorted Job First (SJF)
d. Priority
42. The basic purpose of ________________is to help the users to utilize the hardware
resources for completing different tasks in a simplified manner
a. Operating system
b. Application software
c. All Software
d. All of the given
43. OS helps manages the following except
a. Application software
b. Bus speed of the system
c. Memory
d. Virtual memory
44. __________ scheduler selects the process from the job pool and put them in main memory.
a. Long term
b. Short term
c. Medium term
d. Swapper
45. Linux OS can support multiple users at a time
a. True
b. False
46. The Operating system is a layer of software between _________ and ___________.
a. hardware, software application
b. Kernel, hardwarec. Dos, Windows
d. Windows, Kernel
47. The major advantage of multi-programming system is
a. More than one jobs can be processed at a given time
b. CPU utilization can be increased
c. Jobs can be completed quickly
d. All of the options are correct
48. The main characteristic of a Real time system is
a. Efficiency
b. Large Virtual Memory
c. Large secondary storage device
d. Usability
49. Command-line interpreter is also called __________ in some operating systems.
a. Kernel
b. Shell
c. Signal
d. API
50. I/O instructions are Privileged Instructions.
a. True
b. False
51. In Linux directory structure, there is ___________ root directory.
a. 1
b. 2
c. 3
d. 4
52. ___________ scheduler is also called Swapper.
a. Long term
b. Short termc. Medium term
d. Swap space
53. Bounded Buffer is a buffer of ____________ size
a. Variable
b. Fixed
54. In ________ communication the process which wants to communicate with the other process
must explicitly name the recipient and the sender.
a. Direct
b. Indirect
c. Automatic
d. Self
55. In indirect inter process communication, a sender ________ mention the name of the
recipient.
a. Does
b. does not
56. The ————– system call suspends the calling process
a. Fork
b. Wait
c. Exec
d. Exit
57. The main characteristic of a Real time system is
a. Efficiency
b. Large Virtual Memory
c. Large secondary storage device
d. Usability58. The time it takes for the dispatcher to stop one process and start another running is known as
the———–.
a. Dispatch latency
b. Scheduling
c. Context switching
d. None of the given options
59. First-Come, First-Served (FCFS) is a ————–scheduling algorithm.
a. Preemptive
b. non-preemptive
c. both preemptive and non- preemptive
d. none of the given options
60. The Shortest-Job-First Scheduling algorithm can be
a. Preemptive only
b. non-preemptive only
c. preemptive or non-preemptive.
d. None of the given options
