CS401 Quiz 2 by VU Topper RM

Q1. Vu-Topper RM (1 marks)

Scrolling is the process of moving one or more lines towards the top or bottom of the screen and this is _______.

Cleared

Q2. Vu-Topper RM (1 marks)

There is an auto-increment mode when the _______ is __________.

DF, set

Q3. Vu-Topper RM (1 marks)

Which of the following is used to clear the direction flag?

CLD

Q4. Vu-Topper RM (1 marks)

Which of the following has magnitude and sign?

Signed number

Q5. Vu-Topper RM (1 marks)

__________ is a special prefix that is used to repeat the block instructions.

REP

Q6. Vu-Topper RM (1 marks)

This jump is taken if the last arithmetic operation produced a negative number in its destination.

JS

Q7. Vu-Topper RM (1 marks)

Push and pop operations always operate on_____________.

Words

Q8. Vu-Topper RM (1 marks)

Multiplying two 4-bit numbers result in a(an) ___________ bit number.

8 bits

Q9. Vu-Topper RM (1 marks)

Suppose AX=5, BX=5, DX=0, CF=1, ZF=1 and AF=1. What will be the final value in AX register after the execution of ADC AX, BX?

Q10. Vu-Topper RM (1 marks)

VGA stands for _________________________.

Video Graphics Array Page 79

Q11. Vu-Topper RM (1 marks)

Number of operands of ADC (add with carry) register are:

Q12. Vu-Topper RM (1 marks)

Which of the following is the renamed version of conditional jump JZ?

JE

Q13. Vu-Topper RM (1 marks)

If AX=00FF, then which of the following instruction can be used to change the value of AX to FF00?

AND AX, FF00

Q14. Vu-Topper RM (1 marks)

Conditional jump can only be ___________.

Short

Q15. Vu-Topper RM (1 marks)

REPNZ repeats the following instruction while the ________.

ZF is not set

Q16. Vu-Topper RM (1 marks)

To declare a character in assembly language, we store its ASCII code in a_____________.

Byte

Q17. Vu-Topper RM (1 marks)

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

Full

Q18. Vu-Topper RM (1 marks)

Stack is a data structure that behaves in a First in Last ……. manner.

Out Page 67

IN

Q19. Vu-Topper RM (1 marks)

We can convert a digit into its ASCII representation by adding to it.

0x30 Page 80

Q20. Vu-Topper RM (1 marks)

___ decrements SP (the stack pointer) by two and then transfers a word from source operand to the top of stack now pointed to by SP,

PUSH Page 71

Q21. Vu-Topper RM (1 marks)

The flag has a special role in debugging.

Trap Page 17

Q22. Vu-Topper RM (1 marks)

iAPX88 stands for:

Intel Advanced Processor Extensions 88 Page 14

Q23. Vu-Topper RM (1 marks)

In every bit moves one position to the right and the bit dropped from the right is inserted at the left. This bit is also copied into the carry flag.