CS401-Midterm
1 / 50
When a 16 bit number is divided by an 8 bit number, the dividend will be in
2 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
3 / 50
When an item is pushed on the decrementing stack, the top of the stack is
4 / 50
In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
5 / 50
6 / 50
If we want to divide a signed number by 2, this operation can better be accomplished by
7 / 50
The basic function of SCAS instruction is to
8 / 50
Stack is a ______ that behaves in a first in last out manner.
9 / 50
In STOSB instruction, when DF is Set, SI is
10 / 50
The iAPX888 architecture consists of _______ register.
11 / 50
The physical address of the stack is obtained by
12 / 50
Only instructions allow moving data from memory to memory.
13 / 50
Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
14 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
15 / 50
one DIV instruction has
16 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
17 / 50
In assembly the CX register is used normally as a ______________register.
18 / 50
19 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
20 / 50
MOV instruction transfers a byte or word from which of the following source location.
21 / 50
Code Segment is associated to _______ register by default.
22 / 50
one RET is executed, it recovers the values from
23 / 50
RETF will pop the offset in the
24 / 50
If the direction of the processing of a string is from higher addresses towards lower addresses then
25 / 50
In STOS instruction, the implied source will always be in
26 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
27 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
28 / 50
Assembly language is:
29 / 50
After the execution of STOSW, the CX will be
30 / 50
After the execution of STOSW the CX will be
31 / 50
An offset alone is not complete without
32 / 50
Which bit of the attributes byte represents the blue component of foreground color
33 / 50
After execution of JCXZ instruction CX will changed with flag affect.
34 / 50
The clear screen operation initialize whole block of memory
35 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen, color of the character will be
36 / 50
mov ax,5 has
37 / 50
The iAPX88 processor supports ___________ modes of memory access.
38 / 50
One screen location corresponds to a
39 / 50
ASCII stands for ____________. The screen is two dimensional space having:
40 / 50
assembly the CX register is used normally as a ______________register.
41 / 50
42 / 50
All the addressing mechanisms iniAPX88 return a number called ______ address.
43 / 50
REP will always
44 / 50
45 / 50
After the execution of instruction “RET”
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48 / 50
The instruction ADC has________ Operand(s)
49 / 50
After the execution of instruction “RET ”
50 / 50
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The average score is 64%
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