The _________ and DPL have the same meaning as in data and code descriptors.

• A) O
• B) P
• C) T
• D) S

_________ is a special type of interrupt that returns to the same instruction instead of the next instruction.

• A) Debug interrupt
• B) Divide overflow interrupt
• C) Change of sign interrupt
• D) Arithmetic overflow interrupt

REP allows an instruction to be _____________ CX times.

• A) replaced
• B) repositioned
• C) reported
• D) repeated

Scrolling is the process of moving one or more lines towards the top or bottom of the screen, and the new line that appears on the top or bottom is___________.

• A) multiplied
• B) added
• C) cleared
• D) joined

REP allows the instruction to be repeated _________ times.

• A) AX
• B) CX
• C) DX
• D) BX

Total number of reserved interrupts in Intel 8088 are ______________.

• A) 3
• B) 8
• C) 255
• D) 5

REP with MOVS utilizes the _______________ power of a processor to do scrolling in minimum time.

• A) quarter
• B) half
• C) full
• D) small

Each entry of the interrupt vector table is of __________ byte(s).

• A) 3
• B) 4
• C) 2
• D) 1

The 8088 processor divides interrupts into ____ classes.

• A) Two
• B) One
• C) Three
• D) Four

In the context of video services, if we want to scroll the window up which of the following will be the value of AH?

• A) AH = 07h
• B) AH = 06h
• C) AH = 08h
• D) AH = 05h

The maximum length of DOS command line parameters is

• A) 512 bits
• B) 127 bits
• C) 256 bits
• D) 64 bits

Which of the following is the priority of Interrupt Request (IRQ) 0?

• A) Low
• B) Highest
• C) High
• D) Medium

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

• A) INT 10
• B) INT 09
• C) INT 16
• D) INT 08

Which of the following service of INT 21 is used to write a string on standard output?

• A) 00h
• B) 09h
• C) 02h
• D) 10h

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

• A) INT 1
• B) INT 0
• C) INT 2
• D) INT 3

On executing INT 0x21--service 0x3D, if file can't be opened then

• A) ZF will contain 1
• B) CF will contain 0
• C) CF will contain 1
• D) ZF will contain 0

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

• A) Carry flag
• B) Trap flag
• C) Interrupt flag
• D) Direction flag

In the context of video services, if we want to set the cursor at top left corner, which of the values will be stored in DH and DL respectively?

• A) 25, 80
• B) 01, 01
• C) 00, 80
• D) 00, 00

BIOS video services are exported via interrupt

• A) INT7
• B) INT10
• C) INT8
• D) INT9

Which of the following registers are used as a DOS input buffer?

• A) DS:DX
• B) SS:SP
• C) CS:BX
• D) DS:AX