CS401 Quiz No.3 Shared by Sam

Which of the following are required for thread entry?
Select correct option:
CS and DS
CS and IP
IP and general purpose registers
SS and SP

Which of the following IRQs is used for Floppy disk derive?
 IRQ 4
 IRQ 5
 IRQ 6 (Page 114)
 IRQ 7

Which of the following pins of a parallel port connector are grounded?
 10-18
 18-25 (Page 125)
 25-32
 32-39

When two devices in the system want to use the same IRQ line then what will happen?
 An IRQ Collision
 An IRQ Conflict (Page 114)
 An IRQ Crash
 An IRQ Block

Which of the following IRQs is connected to serial port COM 1?
 IRQ 4 (page 114)
 IRQ 5
 IRQ 6
 IRQ 7

Which of the following IRQs is derived by a timer device?
 IRQ 0 (Page 114)
 IRQ 1
 IRQ 2
 IRQ 3

In programmable interrupt controller which of the following ports is used for selectively enabling or disabling
interrupts
19
20
21 (Page 115)
22

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

Which of the following IRQs is used by the parallel port?
IRQ 5
IRQ 4
IRQ 6
IRQ 7

Which of the following interrupts is used for Arithmetic overflow 

Ans: INT 4

DOS has a single entry point through ------- just like a pin hole camera

Ans : INT 21 (108)