CS401-Midterm
1 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
2 / 50
In the instruction MOV AX, 5 the number of operands are
3 / 50
“mov byte [num1],5” is _______ instruction.
4 / 50
The clear screen operation initialize whole block of memory
5 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
6 / 50
The execution of the instruction “mov word [ES: DI], 0x0720”
7 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
8 / 50
After the execution of instruction “RET”
9 / 50
Only instructions allow moving data from memory to memory.
10 / 50
After the execution of STOSW, the CX will be
11 / 50
To convert any digit to its ASCII representation
12 / 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:
13 / 50
Regarding assembler, which statement is true:
14 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
15 / 50
Assembly language is:
16 / 50
If the direction of the processing of a string is from higher addresses towards lower addresses then
17 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
18 / 50
When a 16 bit number is divided by an 8 bit number, the dividend will be in
19 / 50
Code Segment is associated to _______ register by default.
20 / 50
In a video memory, each screen location corresponds to
21 / 50
if ax contains decimal -2 and BX contains decimal 2 then after the execution of instructions: CMP AX, BX ,JA label
22 / 50
Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
23 / 50
Which bit of the attributes byte represents the blue component of foreground color
24 / 50
25 / 50
To transfer control back the RET instruction take
26 / 50
Stack is a ______ that behaves in a first in last out manner.
27 / 50
28 / 50
When an item is pushed on the decrementing stack, the top of the stack is
29 / 50
Which bit of the attributes byte represents the blue component of background color ?
30 / 50
REP will always
31 / 50
In STOS instruction, the implied source will always be in
32 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
33 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen, color of the character will be
34 / 50
which bit sets the character "blinking" on the screen?
35 / 50
The first instruction of “COM” file must be at offset:
36 / 50
ASCII stands for ____________. The screen is two dimensional space having:
37 / 50
When the operand of DIV instruction is of 16 bits then implied dividend will be of
38 / 50
In 8088 architecture, whenever an element is pushed on the stack
39 / 50
40 / 50
one DIV instruction has
41 / 50
A 32 Bit processor has accumulator of ---------
42 / 50
physical address of the stack is obtained by
43 / 50
When a 32 bit number is divided by a 16 bit number, the quotient will be stored in
44 / 50
After the execution of instruction “RET ”
45 / 50
_______ register holds the address of next instruction is to be executed
46 / 50
MOV instruction transfers a byte or word from which of the following source location.
47 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
48 / 50
After the execution of instruction “RET 2”
49 / 50
The basic function of SCAS instruction is to
50 / 50
The iAPX888 architecture consists of _______ register.
Your score is
The average score is 64%
Restart quiz
