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CS401 Quiz 3 with References by Muhammad Ahmad

Computer Architecture and Assembly Language Programming PDF 688 KBUpdated 23 Oct 2026
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Quiz CS401 Quiz 3 with References by Muhammad Ahmad PDF 688 KB
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CS401 Computer Architecture and Assembly Language Programming
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23 Oct 2026
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CS 401 Quiz No. 3

For More Quiz files Contact File Prepared by Muhammad Ahmad

  1. In Intel 8088, there are a total of __________ possible interrupt vectors in an interrupt Vector Table.

Answer: Page No. 97

Q2. Programmable Interrupt Controller (PIC), which of the following ports is used to selectively enable or disable interrupts?

Answer: Page No. 107

  1. Programmable Interrupt Controller (PIC) has, ______ input signal(s) and ______ output signal(s).

Eight, One

Answer: Page No. 105

Q4. Which of the following instructions is used to read a character from the keyboard port?

in al, 0x60

Answer: Page No. 108

Q5. Which of the following interrupts plays the most significant part during single step debugging of a program?

INT 1

Answer: Page No. 97

  1. DOS has a single entry point to access all of its services through

INT 21

Answer: Page No. 100

  1. According to the IBM standard, port number(s) for the parallel port is/are

Answer: Page No. 107

  1. __________ is used for exporting keyboard services.

INT 16

Answer: Page No. 100

  1. TSR stands for

Terminate and Stay Resident

Answer: Page No. 111

Q10. Which of the following IRQS is used for sound card or network card?

IRQ 5

Answer: Page No. 106

  1. The Programmable interval Timer (PIT) has an input frequency of

1.19318 MHz

Answer: Page No. 114

Q12. Which of the following interrupts is used to maintain the system time?

INT 8

Answer: Page No. 106

  1. The offset address of an interrupt service routine 'n' is at n×4

Answer: The IBM PC AT Programmer's Guide James T. Smith Prentice Hall Press, 1986

Q14. Which of the following are the data pins used to take data from the processor to the device connected through parallel port?

2 to 9

Answer: Page No. 117

Q15. Which of the following is the source register in OUT instruction?

AL or AX

Answer: Page No. 107

Q16. Which of the following instructions selects the peripheral address space?

IN

Answer: Page No. 107

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