CS401 3rd Quiz Solution

Computer Architecture and Assembly Language

CS401

Quiz No.3 Solution

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1. Time 08:08:01 (Marks 1)

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

Select One

1. 20
2. 20
3. 25
4. 21

Answer: 21

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2. Time 08:09:02 (Marks 1)

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

Select One

1.      10-18

2.      18-25

3.      25-32

4.      32/39

Answer: 2

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3. Time 08:09:40 (Marks 1)
Which of the following is a special type of interrupt that returns to the
same instruction instead of the next instruction

1.      Divide overflow interrupt

2.      Debug interrupt

3.      Arithmetic Overflow Interrupt

4.      Change of sign interrupt

Answer:- 1

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4. Time 08:10:10 (Marks 1)

Each thread can have their own

1.      Execution area

2.      Stack

3.      Memory

4.      Array

Answer: 2

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5. Time 08:10:30 (Marks 1)
Direction flag, the interrupt flag, and the trap flag are

1.      Used for mathematical operations

2.      Not used for mathematical operations

3.      Status flags

4.      Not status flags

Answer: 3

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5.Time 08:10:50 (Marks 1)
When 2 devices in the system want to use the same IRQ line then what will
happen?

1.      An IRQ collision

2.      An IRQ conflict

3.      An IRQ crash

4.      An IRQ block area

Answer:  2

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6. Time 08:11:10 (Marks 1)
Memory address spaces is selected when which of the following instructions
is given to the processor?

1.      MOV

2.      DEC

3.      IN

4.      ADD

Answer: 1

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8. Time 08:12:10 (Marks 1)
Which of the following IRQs is used for Floppy disk derive?

1.      IRQ 4

2.      IRQ 5

3.      IRQ 6

4.      IRQ 7

Answer: 3

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10. Time 08:12:40 (Marks 1)
Which of the following IRQs is derived by a keyboard?

1.      IRQ 0

2.      IRQ 1

3.      IRQ 2

4.      IRQ 3

Answer: 2
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