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
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:
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25 / 50
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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
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
45 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
46 / 50
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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