CS401-Midterm
1 / 50
Which bit of the attributes byte represents the blue component of foreground color
2 / 50
If the direction of the processing of a string is from higher addresses towards lower addresses then
3 / 50
Left-Shift-Operation the left most bit _______
4 / 50
allow changing specific processor behaviors and are used to play with it.
5 / 50
The iAPX888 architecture consists of _______ register.
6 / 50
8088 is a 16bit processor with its accumulator and all registers of __________.
7 / 50
While using STOBS, if DF=1 then
8 / 50
One screen location corresponds to a
9 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
10 / 50
one Only ___________ instructions allow moving data from memory to memory.
11 / 50
To convert any digit to its ASCII representation
12 / 50
decrements SP (the stack pointer) by two and then transfers a word from the source operand to the top of stack
13 / 50
| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______
14 / 50
The clear screen operation initialize whole block of memory
15 / 50
In STOS instruction, the implied source will always be in
16 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
17 / 50
The basic function of SCAS instruction is to
18 / 50
After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
19 / 50
After the execution of STOSW the CX will be
20 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
21 / 50
22 / 50
Only instructions allow moving data from memory to memory.
23 / 50
In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
24 / 50
To transfer control back the RET instruction take
25 / 50
26 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
27 / 50
After the execution of SAR instruction:
28 / 50
Regarding assembler, which statement is true:
29 / 50
In the instruction “CMP AX,BX” the contents of
30 / 50
When an item is pushed on the decrementing stack, the top of the stack is
31 / 50
In the instruction MOV AX, 5 the number of operands are
32 / 50
In a video memory, each screen location corresponds to
33 / 50
Stack is a ______ that behaves in a first in last out manner.
34 / 50
35 / 50
After the execution of “PUSH AX” statement
36 / 50
The execution of the instruction “mov word [ES: DI], 0x0720”
37 / 50
In assembly the CX register is used normally as a ______________register.
38 / 50
When two 16bit numbers are added the answer can be 17 bits long, this extra bit that won’t fit in the target register is placed in the where it can be used and tested
39 / 50
All the addressing mechanisms in iAPX88 return a number called _____________ address.
40 / 50
41 / 50
_________ is one of the reasons due to which string instructions are used in 8088
42 / 50
MOV instruction transfers a byte or word from which of the following source location.
43 / 50
ASCII stands for ____________. The screen is two dimensional space having:
44 / 50
When a 32 bit number is divided by a 16 bit number, the quotient is of
45 / 50
A 32 Bit processor has accumulator of ---------
46 / 50
47 / 50
Which bit of the attributes byte represents the red component of background color ?
48 / 50
The routine that executes in response to an INT instruction is called
49 / 50
The execution of the instruction “mov word [ES : 160], 0x1230” will print a character “0” on the screen at
50 / 50
The extended ASCII has
Your score is
The average score is 64%
Restart quiz
