CS401-Midterm
1 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
2 / 50
The execution of the instruction “mov word [ES : 160], 0x1230” will print a character “0” on the screen at
3 / 50
The first instruction of “COM” file must be at offset:
4 / 50
After the execution of instruction “RET ”
5 / 50
Only instructions allow moving data from memory to memory.
6 / 50
The extended ASCII has
7 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
8 / 50
The physical address of the stack is obtained by
9 / 50
All the addressing mechanisms iniAPX88 return a number called ______ address.
10 / 50
When an item is pushed on the decrementing stack, the top of the stack is
11 / 50
JC and JNC test the ____________ flag.
12 / 50
The iAPX888 architecture consists of _______ register.
13 / 50
In a video memory, each screen location corresponds to
14 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
15 / 50
The prevalent convention in most high level languages is stack clearing by the
16 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
17 / 50
In 8088 architecture, whenever an element is pushed on the stack
18 / 50
In assembly the CX register is used normally as a ______________register.
19 / 50
REP will always
20 / 50
Which bit of the attributes byte represents the blue component of background color ?
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22 / 50
_________ is one of the reasons due to which string instructions are used in 8088
23 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
24 / 50
After execution of JCXZ instruction CX will changed with flag affect.
25 / 50
To transfer control back the RET instruction take
26 / 50
27 / 50
ASCII stands for ____________. The screen is two dimensional space having:
28 / 50
“Far” jump is not position relative but is _______________
29 / 50
If we want to divide a signed number by 2, this operation can better be accomplished by
30 / 50
When a 16 bit number is divided by an 8 bit number, the dividend will be in
31 / 50
Assembly language is:
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33 / 50
RETF will pop the offset in the
34 / 50
Which bit of the attributes byte represents the red component of background color ?
35 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
36 / 50
allow changing specific processor behaviors and are used to play with it.
37 / 50
In STOS instruction, the implied source will always be in
38 / 50
one RET is executed, it recovers the values from
39 / 50
MOV instruction transfers a byte or word from which of the following source location.
40 / 50
The second byte in the word designated for one screen location holds
41 / 50
When a 32 bit number is divided by a 16 bit number, the quotient will be stored in
42 / 50
one Only ___________ instructions allow moving data from memory to memory.
43 / 50
one DIV instruction has
44 / 50
After the execution of “PUSH AX” statement
45 / 50
After the execution of STOSW the CX will be
46 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
47 / 50
decrements SP (the stack pointer) by two and then transfers a word from the source operand to the top of stack
48 / 50
When the operand of DIV instruction is of 16 bits then implied dividend will be of
49 / 50
50 / 50
mov ax,5 has
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