CS401 Midterm Online Quiz

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CS401-Midterm

1 / 50

Which of the following options contain the set of instructions to open a window to the video memory?

2 / 50

In the Rotate Right Operation every bit moves one position to right and the bit dropped from the right is inserted at the left and:

3 / 50

Which bit of the attributes byte represents the blue component of foreground color

4 / 50

When a 32 bit number is divided by a 16 bit number, the quotient will be stored in

5 / 50

An offset alone is not complete without

6 / 50

Assembly language is:

7 / 50

After the execution of SAR instruction:

8 / 50

The physical address of the stack is obtained by

9 / 50

When an item is pushed on the decrementing stack, the top of the stack is

10 / 50

Which is the unidirectional bus ?

Control Bus

(II) Data Bus

(III) Address Bus

11 / 50

8088 is a 16bit processor with its accumulator and all registers of __________.

12 / 50

The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be

13 / 50

In 8088 architecture, whenever an element is pushed on the stack

14 / 50

While using STOBS, if DF=1 then

15 / 50

In STOS instruction, the implied source will always be in

16 / 50

In a video memory, each screen location corresponds to

17 / 50

When an item is pushed on the decrementing stack, the top of the stack is

18 / 50

MOV instruction transfers a byte or word from which of the following source location.

19 / 50

The execution of the instruction “mov word [ES : 160], 0x1230” will print a character “0” on the screen at

20 / 50

After the execution of MOVS instruction which of the following registers are updated

21 / 50

If the address of memory location Num1 is 0117 and its content is 0005 then after execution of the instruction “ mov bx, Num1” bx will contain

22 / 50

A 32 Bit processor has accumulator of ---------

23 / 50

ASCII stands for ____________. The screen is two dimensional space having:

24 / 50

In STOS instruction, the implied source will always be in

25 / 50

The physical address of the stack is obtained by

26 / 50

When an item is pushed on the decrementing stack, the top of the stack is

27 / 50

When a 16 bit number is divided by an 8 bit number, the dividend will be in

28 / 50

one DIV instruction has

29 / 50

Stack is a ______ that behaves in a first in last out manner.

30 / 50

To transfer control back the RET instruction take

31 / 50

Only instructions allow moving data from memory to memory.

32 / 50

After the execution of instruction “RET 2”

33 / 50

In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?

34 / 50

The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be

35 / 50

Code Segment is associated to _______ register by default.

36 / 50

The physical address of the stack is obtained by

37 / 50

The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen, color of the character will be

38 / 50

| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______

39 / 50

“mov byte [num1], 5” is _________ instruction.

40 / 50

After the execution of REP instruction CX will be decremented then which of the following flags will be affected?

41 / 50

Regarding assembler, which statement is true:

42 / 50

All the addressing mechanisms in iAPX88 return a number called _____________ address.

43 / 50

Which bit of the attributes byte represents the red component of background color ?

44 / 50

The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be

45 / 50

Which mathematical operation is dominant during the execution of SCAS instruction

46 / 50

The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be

47 / 50

The iAPX888 architecture consists of _______ register.

48 / 50

The second byte in the word designated for screen location holds

49 / 50

When a very large number is divided by very small number so that the quotient is larger than the space provided, this is called

50 / 50

_________ is one of the reasons due to which string instructions are used in 8088

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