CS401-Midterm
1 / 50
One screen location corresponds to a
2 / 50
Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
3 / 50
The first instruction of “COM” file must be at offset:
4 / 50
“mov byte [num1],5” is _______ instruction.
5 / 50
MOV instruction transfers a byte or word from which of the following source location.
6 / 50
one Only ___________ instructions allow moving data from memory to memory.
7 / 50
The routine that executes in response to an INT instruction is called
8 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
9 / 50
The clear screen operation initialize whole block of memory
10 / 50
which bit sets the character "blinking" on the screen?
11 / 50
mov ax,5 has
12 / 50
The second byte in the word designated for screen location holds
13 / 50
In a video memory, each screen location corresponds to
14 / 50
To transfer control back the RET instruction take
15 / 50
JC and JNC test the ____________ flag.
16 / 50
In the instruction MOV AX, 5 the number of operands are
17 / 50
To convert any digit to its ASCII representation
18 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
19 / 50
When an item is pushed on the decrementing stack, the top of the stack is
20 / 50
21 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
22 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
23 / 50
When a very large number is divided by very small number so that the quotient is larger than the space provided, this is called
24 / 50
“Far” jump is not position relative but is _______________
25 / 50
Which bit of the attributes byte represents the red component of background color ?
26 / 50
In assembly the CX register is used normally as a ______________register.
27 / 50
The execution of the instruction “mov word [ES: DI], 0x0720”
28 / 50
29 / 50
Left-Shift-Operation the left most bit _______
30 / 50
REP will always
31 / 50
if ax contains decimal -2 and BX contains decimal 2 then after the execution of instructions: CMP AX, BX ,JA label
32 / 50
The basic function of SCAS instruction is to
33 / 50
After the execution of MOVS instruction which of the following registers are updated
34 / 50
35 / 50
After the execution of STOSW the CX will be
36 / 50
In the word designated for one screen location, the higher address contains
37 / 50
The instruction ADC has________ Operand(s)
38 / 50
Only instructions allow moving data from memory to memory.
39 / 50
_________ is one of the reasons due to which string instructions are used in 8088
40 / 50
The physical address of the stack is obtained by
41 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
42 / 50
The second byte in the word designated for one screen location holds
43 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
44 / 50
When a 16 bit number is divided by an 8 bit number, the dividend will be in
45 / 50
46 / 50
After the execution of “PUSH AX” statement
47 / 50
Regarding assembler, which statement is true:
48 / 50
49 / 50
If we want to divide a signed number by 2, this operation can better be accomplished by
50 / 50
Your score is
The average score is 64%
Restart quiz
