CS401 Quiz No.3 (Solved Quizzes)

1. Memory address space is selected when which of the following instructions is given to the processor?

Select correct option:
MOV  

DEC
IN
ADD

2. PCB stands for?
Select correct option:
Process Control Block 132
Process Clearing Block
Programable Counter Block
Programs Control Block

3. Creation of threads can be
Select correct option:
Static
Dynamic 133
Both
None

4. Threads can have function calls, parameters and ________ variables.
Select correct option:
global
local 133
legal
illegal

  

5. Which of the following is the highest priority interrupt

Int3

Int2

Int1

Int0       

  

6. The input frequency of the programmable interval timer (PIT) is

Fixed 114

Depends on processor clock 

Variable

Depends on hardware attached

  

7. Programmable interrupt controller has two ports 20 and 21. Port 20 is the control port while port 21 is...........

The Interrupt mask register 107

Interrupt port

Output port

Input port

8. The source registers in OUT is ?

AL or AX 107

BL or BX     

CL or CX  

DL or DX    

9. The time interval between two timer ticks is ?

40ms

45ms

50ms

55ms 114

10. Which of the following interrupts is used for saving and restoring the registers

INT6

Int7

Int8

Int0       

 11. In programmable interrupt controller which of the following ports is referred as a interrupt mask register?

19

20

21 page 107

22

12. The thread registration code initializes the PCB and adds it to the linked list so that the __________ will give it a turn.

Assembler

Scheduler 133

Linker

Debugger 

13. The programmable interval timer (PIT) has input frequency of

1.193MHZ 114

2.192MHZ

3.196MHZ

4.198MHZ

14. Peripheral address space is selected when which of the following instructions is given to the processor?

MOv

In

Add

Out                       

15. Direction flag, the interrupt flag, and the trap flag are

used for mathematical operations

not used for mathematical operations   123

status flags

not status flags

16. An End of Interrupt (EOI) signal is sent by

Handler

Processor

IRQ       

PIC 106

17. The space where all the registers of a task are stored is called the

control block

process control block   132 

stack

memory  

18. The number of pins in a parallel port connector are? 

Select correct option: 

20

25 117

30

35

19. Which of the following interrupt is of highest priority interrupt? 

Select correct

Key board interrupt

Timer interrupt 106

INT 2

INT 3

  

20. The instruction used to read a character from the keyboard port is

in al, 0x60 108

out al, 0x60

in al, 0x80

out al, 0x80

21. Each thread can have their own

execution area    

stack 133

memory   

array 

22. All the registers & stack are saved in

Multitasking

multi-processing

function call         

BIOS

23. Which of the following IRQs is used for sound card or network card?

IRQ 4

IRQ 5

IRQ 6

IRQ 7

24. In programmable interrupt controller which of the following ports is referred as a control port?

22

19

21

20 107

25. In programmable interrupt controller which of the following ports is used for selectively enabling or disabling interrupts ?

19

20

21 107

22

26. Which of the following is the highest priority interrupt

Int3

Int2

Int1

Int0

27. The input frequency of the programmable interval timer (PIT) is

Fixed 114

Depends on processor clock 

Variable

Depends on hardware attached

28. Programmable interrupt controller has two ports 20 and 21. Port 20 is the control port while port 21 is...........

The Interrupt mask register 107

Interrupt port

Output port

Inpuit port

29. The source registers in OUT is ?

AL or AX 107

BL or BX      

CL or CX  

DL or DX    

30. Creation of threads can be

Static 

Dynamic 133

Both

None

31. The time interval between two timer ticks is ?

40ms

45ms

50ms

55ms 114

32. Which of the following interrupts is used for saving and restoring the registers

INT6

Int7

Int8

Int0

33. PCB stands for?

Process Control Block 132

Process Clearing Block

Programable Counter Block

Programs Control Block

34.  In programmable interrupt controller which of the following ports is referred as a interrupt mask register?

19

20

21 107

22

35. The thread registration code initializes the PCB and adds it to the linked list so that the __________ will give it a turn.

Assembler

Scheduler 133

Linker

Debugger 

36. The programmable interval timer (PIT) has input frequency of

1.193MHZ 114

2.193MHZ

3.193MHZ

4.193MHZ

37. Threads can have function calls, parameters and __________ variables.

Global

Local 133

Legal

Illegal

38. Peripheral address space is selected when which of the following instructions is given to the processor?

MOv

In

Add

Out

39. Direction flag, the interrupt flag, and the trap flag are

used for mathematical operations

not used for mathematical operations  123

status flags

not status flags

40. An End of Interrupt (EOI) signal is sent by

Handler

Processor

IRQ 

PIC 106

41. The space where all the registers of a task are stored is called the

control block

process control block

stack

memory  

42. The instruction used to read a character from the keyboard port is

in al, 0x60

out al, 0x60

in al, 0x80

out al, 0x80

43. Which of the following pins of a parallel port connector are grounded?

25-32

10-18

18-25 117

32-39

44. Each thread can have their own

execution area    

stack

memory   

array 

45. All the registers & stack are saved in

Multitasking (page 131)

multi-processing

function call          

BIOS

46. The instruction used to read a character from the keyboard port is
Select correct option:
in al, 0x60
out al, 0x60
in al, 0x80
out al, 0x80

47. Question # 2 of 10 ( Start time: 02:59:00 PM )     Total Marks: 1
Each thread can have their own
Select correct option:
execution area
stack
memory
array

48. Question # 3 of 10 ( Start time: 03:00:28 PM )     Total Marks: 1
There is no instruction to clear the
Select correct option:
Trap flag 125
Interrupt flag
Direction flag
None of the above

49. PCB stands for?
Select correct option:
Process Control Block
Process Clearing Block
Programable Counter Block
Programs Control Block

50. From the following which is related to read a char from key board?
Select correct option:
out al, 0x60
in al, 0x60
out dx, al
ou dx, 0x378

51. The input frequency of the programmable interval timer (PIT) is
Select correct option:
Fixed
Depends on processor clock
Variable
Depends on hardware attached

52. The thread registration code initializes the PCB and adds it to the linked list so that the __________ will give it a turn.
Select correct option:
Assembler
Scheduler
Linker
Debugger

53. The source registers in OUT is ?
Select correct option:
AL or AX
BL or BX
CL or CX
DL or DX

54. The time interval between two timer ticks is ?
Select correct option:
 40ms
 45ms
 50ms
 55ms

55. Creation of threads can be
Select correct option:
Static
Dynamic
Both
None

56. Memory address space is selected when which of the following instructions is given to the processor?s
Select correct option:
MOV  

DEC
IN
ADD

57. PCB stands for?
Select correct option:
Process Control Block
Process Clearing Block
Programable Counter Block
Programs Control Block

58. Creation of threads can be
Select correct option:
Static
Dynamic
Both
None

59. Threads can have function calls, parameters and ________ variables.
Select correct option:
global
local
legal
illegal

60. Which of the following is the highest priority interrupt

Int3

Int2

Int1

Int0       

61. The input frequency of the programmable interval timer (PIT) is

Fixed

Depends on processor clock 

Variable

Depends on hardware attached

62. Programmable interrupt controller has two ports 20 and 21. Port 20 is the control port while port 21 is...........

The Interrupt mask register

Interrupt port

Output port

Input port

63. The source registers in OUT is ?

AL or AX

BL or BX     

CL or CX  

DL or DX    

64. The time interval between two timer ticks is ?

40ms

45ms

50ms

55ms

65. Which of the following interrupts is used for saving and restoring the registers

INT6

Int7

Int8

Int0       

66. In programmable interrupt controller which of the following ports is referred as a interrupt mask register?

19

20

21 

22

67. The thread registration code initializes the PCB and adds it to the linked list so that the __________ will give it a turn.

Assembler

Scheduler

Linker

Debugger 

68. The programmable interval timer (PIT) has input frequency of

1.193MHZ

2.192MHZ

3.196MHZ

4.198MHZ

69. Peripheral address space is selected when which of the following instructions is given to the processor?

MOv

IN

Add

Out                       

70. Direction flag, the interrupt flag, and the trap flag are

used for mathematical operations

not used for mathematical operations   

status flags

not status flags

71. An End of Interrupt (EOI) signal is sent by

Handler

Processor

IRQ        

PIC  

72. The space where all the registers of a task are stored is called the

control block

process control block    

stack

memory  

 73. The number of pins in a parallel port connector are? 

Select correct option: 

 20

25

30

35

74. Which of the following interrupt is of highest priority interrupt? 

Select correct

option: 

Key board interrupt

Timer interrupt

INT 2

INT 3

75. The instruction used to read a character from the keyboard port is

in al, 0x60

out al, 0x60

in al, 0x80

out al, 0x80

76. Each thread can have their own

execution area    

stack  

memory   

array 

77.All the registers & stack are saved in

Multitasking

multi-processing

function call         

BIOS

78. Which of the following is the highest priority interrupt 

Select correct option: 

 INT3

 INT2

 INT1 

 INT0

79. Which of the following interrupts is used for saving and restoring the registers 

Select correct option: 

  INT6

 INT7

 INT8

 INT0

80. There is no instruction to clear the 

Select correct option: 

 Trap flag

Interrupt flag

Direction flag

None of the above

81. For the external hardware to generate an interrupt there are how many pins out side the processor?

1

2

3

4

82. Which of the following IRQs is derived by a keyboard?

IRQ 0

IRQ 1 106

IRQ 2

IRQ 3

83. Which of the following IRQs is connected to serial port COM 2?

Select correct option:

IRQ 0

IRQ 1

IRQ2

IRQ3 106

84. Programmable interrupt controller (PIC) has

Select correct option:

One input signals and eight output signals

One input signal and one output signal 

Eight input signals and one output signals 105

Eight input signals and eight output signals

85. Which of the following IRQs is used by the parallel port?

IRQ 5

IRQ 4

IRQ 6

IRQ 7 117

86. Which of the following IRQs is a cascading interrupt?

IRQ 0

IRQ 1

IRQ 2 106

IRQ 3

87. Which of the following pins of a parallel port connector are grounded 

10-15

18-25

25-32

32-39

88. Which of the following IRQs is used for Floppy disk derive?

IRQ 4    

IRQ 5 

IRQ 6 106

IRQ 7 

89. When two devices in the system want to use the same IRQ line then what will happen?

A)           An IRQ Collision

B)            An IRQ Conflict

C)            An IRQ Crash

D)           An IRQ Blockage

90. The parallel port connector is called ?

Select correct option:

DB-25 117

BD-25

DB-24

BD-24

91. IRQ is referred to

Select correct option:

Eight input signals 105

One output signal

Eight output signals

One input signals