CS401-Midterm
1 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
2 / 50
Which bit of the attributes byte represents the red component of background color ?
3 / 50
Regarding assembler, which statement is true:
4 / 50
8088 is a 16bit processor with its accumulator and all registers of __________.
5 / 50
The first instruction of “COM” file must be at offset:
6 / 50
physical address of the stack is obtained by
7 / 50
If we want to divide a signed number by 2, this operation can better be accomplished by
8 / 50
When the operand of DIV instruction is of 16 bits then implied dividend will be of
9 / 50
All the addressing mechanisms iniAPX88 return a number called ______ address.
10 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
11 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
12 / 50
In the instruction “CMP AX,BX” the contents of
13 / 50
When an item is pushed on the decrementing stack, the top of the stack is
14 / 50
In assembly the CX register is used normally as a ______________register.
15 / 50
mov ax,5 has
16 / 50
Only instructions allow moving data from memory to memory.
17 / 50
After the execution of STOSW, the CX will be
18 / 50
The physical address of the stack is obtained by
19 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
20 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
21 / 50
one DIV instruction has
22 / 50
23 / 50
CMPS instruction subtracts the source location to the destination location. Destination location always lies in
24 / 50
In STOS instruction, the implied source will always be in
25 / 50
After the execution of instruction “RET ”
26 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
27 / 50
A 32 Bit processor has accumulator of ---------
28 / 50
29 / 50
30 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
31 / 50
The iAPX888 architecture consists of _______ register.
32 / 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
33 / 50
34 / 50
The second byte in the word designated for screen location holds
35 / 50
ASCII stands for ____________. The screen is two dimensional space having:
36 / 50
To convert any digit to its ASCII representation
37 / 50
38 / 50
One screen location corresponds to a
39 / 50
assembly the CX register is used normally as a ______________register.
40 / 50
JC and JNC test the ____________ flag.
41 / 50
After the execution of “PUSH AX” statement
42 / 50
After the execution of SAR instruction:
43 / 50
44 / 50
The routine that executes in response to an INT instruction is called
45 / 50
Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
46 / 50
MOV instruction transfers a byte or word from which of the following source location.
47 / 50
48 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen, color of the character will be
49 / 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:
50 / 50
Left-Shift-Operation the left most bit _______
Your score is
The average score is 64%
Restart quiz
