CS401-Midterm
1 / 50
“mov byte [num1],5” is _______ instruction.
2 / 50
In the instruction MOV AX, 5 the number of operands are
3 / 50
MOV instruction transfers a byte or word from which of the following source location.
4 / 50
The clear screen operation initialize whole block of memory
5 / 50
In assembly the CX register is used normally as a ______________register.
6 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
7 / 50
After the execution of instruction “RET ”
8 / 50
One screen location corresponds to a
9 / 50
When the operand of DIV instruction is of 16 bits then implied dividend will be of
10 / 50
The basic function of SCAS instruction is to
11 / 50
When a 16 bit number is divided by an 8 bit number, the dividend will be in
12 / 50
In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
13 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
14 / 50
After the execution of SAR instruction:
15 / 50
The iAPX888 architecture consists of _______ register.
16 / 50
physical address of the stack is obtained by
17 / 50
The physical address of the stack is obtained by
18 / 50
To convert any digit to its ASCII representation
19 / 50
20 / 50
Only instructions allow moving data from memory to memory.
21 / 50
The first instruction of “COM” file must be at offset:
22 / 50
23 / 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
24 / 50
In STOS instruction, the implied source will always be in
25 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
26 / 50
In a video memory, each screen location corresponds to
27 / 50
The instruction ADC has________ Operand(s)
28 / 50
29 / 50
When an item is pushed on the decrementing stack, the top of the stack is
30 / 50
A 32 Bit processor has accumulator of ---------
31 / 50
“Far” jump is not position relative but is _______________
32 / 50
Assembly language is:
33 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
34 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
35 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
36 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
37 / 50
decrements SP (the stack pointer) by two and then transfers a word from the source operand to the top of stack
38 / 50
The prevalent convention in most high level languages is stack clearing by the
39 / 50
allow changing specific processor behaviors and are used to play with it.
40 / 50
Which bit of the attributes byte represents the blue component of foreground color
41 / 50
In STOSB instruction, when DF is Set, SI is
42 / 50
After the execution of instruction “RET”
43 / 50
one Only ___________ instructions allow moving data from memory to memory.
44 / 50
After the execution of MOVS instruction which of the following registers are updated
45 / 50
46 / 50
47 / 50
Code Segment is associated to _______ register by default.
48 / 50
_________ is one of the reasons due to which string instructions are used in 8088
49 / 50
The execution of the instruction “mov word [ES : 160], 0x1230” will print a character “0” on the screen at
50 / 50
Your score is
The average score is 64%
Restart quiz
