CS401-Midterm
1 / 50
The basic function of SCAS instruction is to
2 / 50
physical address of the stack is obtained by
3 / 50
The extended ASCII has
4 / 50
The first instruction of “COM” file must be at offset:
5 / 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
6 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
7 / 50
After the execution of instruction “RET”
8 / 50
After the execution of instruction “RET ”
9 / 50
10 / 50
To transfer control back the RET instruction take
11 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
12 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
13 / 50
The physical address of the stack is obtained by
14 / 50
REP will always
15 / 50
When a 16 bit number is divided by an 8 bit number, the dividend will be in
16 / 50
In a video memory, each screen location corresponds to
17 / 50
In the word designated for one screen location, the higher address contains
18 / 50
19 / 50
In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
20 / 50
After the execution of “PUSH AX” statement
21 / 50
8088 is a 16bit processor with its accumulator and all registers of __________.
22 / 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:
23 / 50
one Only ___________ instructions allow moving data from memory to memory.
24 / 50
The second byte in the word designated for one screen location holds
25 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
26 / 50
After the execution of MOVS instruction which of the following registers are updated
27 / 50
ASCII stands for ____________. The screen is two dimensional space having:
28 / 50
Which is the unidirectional bus ?
Control Bus
(II) Data Bus
(III) Address Bus
29 / 50
In assembly the CX register is used normally as a ______________register.
30 / 50
which bit sets the character "blinking" on the screen?
31 / 50
“mov byte [num1],5” is _______ instruction.
32 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
33 / 50
RETF will pop the offset in the
34 / 50
The maximum parameters a subroutine can receive (with the help of registers) are
35 / 50
Assembly language is:
36 / 50
“mov byte [num1], 5” is _________ instruction.
37 / 50
The routine that executes in response to an INT instruction is called
38 / 50
In 8088 architecture, whenever an element is pushed on the stack
39 / 50
If the direction of the processing of a string is from higher addresses towards lower addresses then
40 / 50
If we want to divide a signed number by 2, this operation can better be accomplished by
41 / 50
42 / 50
The clear screen operation initialize whole block of memory
43 / 50
Which bit of the attributes byte represents the blue component of foreground color
44 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
45 / 50
46 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
47 / 50
48 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
49 / 50
50 / 50
mov ax,5 has
Your score is
The average score is 64%
Restart quiz
