CS401 Quiz 4 by VU Topper RM

The thread registration code initializes the Process Control Block (PCB) and adds it to the linked list. The ________________, then gives it a turn. A. Linker

B. Scheduler Page 133

C. Assembler D. Interpreter

Which of the following instructions, selects the peripheral address space?

1. In Page 107
2. Mov
3. Add
4. Dec

Correct answer: In Page 107

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

A. 378 Page 107

B. 380 C. 20 and 21 D. 60 and 64

Which of the following Interrupt Requests (IRQ) is used for a floppy disk drive?

1. IRQ 6 Page 106
2. IRQ 7
3. IRQ 8
4. IRQ 9

Correct answer: IRQ 6 Page 106

port COM 1?

1. IRQ 3
2. IRQ 4
3. IRQ 5
4. IRQ 6

Correct answer: IRQ 4

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

1. IRQ 5
2. IRQ 4
3. IRQ 6
4. IRQ 7 Page 106

Correct answer: IRQ 7 Page 106

When two devices in a system want to use the same Interrupt Request (IRQ) line, is referred as IRQ __________________. A. Crash

B. Conflict Page 106

C. Collision D. Blockage

Which of the following is the priority of interrupt request (IRQ) 0?

1. High
2. Low
3. Highest
4. Medium

Correct answer: Highest

Which of the following is the number of pin(s) outside the processor for generating interrupts by the external hardware?

1. 4
2. 3
3. 1
4. 2

Correct answer: 1

Programmable Interrupt Controller (PIC) has ____________ input signal(s) and ____________ output signal(s). A. one, one

B. eight, one Page 104

C. one, eight D. eight, eight The Programmable Interval Timer (PIT) has an input frequency of

A. 1.193MZH Page 122

B. 2.192MHZ C. 3.196MHZ D. 4.198MHZ

Which of the following instruction is used to return from an interrupt service routine?

1. Ret
2. Iret
3. Reti Google
4. Intr

Correct answer: Reti Google

Which of the following interrupts is used for exporting parallel port services?

1. INT 08
2. INT 15
3. INT 16
4. INT 17

Correct answer: INT 17

Which of the following flags can be used in mathematical operations?

1. Trap flag
2. Carry flag Page 125
3. Direction flag
4. Interrupt flag

Correct answer: Carry flag Page 125

Which of the following Interrupt Requests (IRQ) is derived by the timer device?

1. IRQ 0 Page 105
2. IRQ 1
3. IRQ 2
4. IRQ 3

Correct answer: IRQ 0 Page 105