CS401-Midterm
1 / 50
Stack is a ______ that behaves in a first in last out manner.
2 / 50
Which of the following options contain the set of instructions to open a window to the video memory?
3 / 50
Which bit of the attributes byte represents the blue component of background color ?
4 / 50
_______ register holds the address of next instruction is to be executed
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After the execution of REP instruction CX will be decremented then which of the following flags will be affected?
6 / 50
When a 32 bit number is divided by a 16 bit number, the quotient is of
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if ax contains decimal -2 and BX contains decimal 2 then after the execution of instructions: CMP AX, BX ,JA label
8 / 50
The execution of the instruction “mov word [ES: DI], 0x0720”
9 / 50
In STOSB instruction, when DF is Set, SI is
10 / 50
After the execution of instruction “RET ”
11 / 50
one DIV instruction has
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After the execution of SAR instruction:
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In a video memory, each screen location corresponds to
14 / 50
When an item is pushed on the decrementing stack, the top of the stack is
15 / 50
After the execution of STOSW the CX will be
16 / 50
RETF will pop the offset in the
17 / 50
Regarding assembler, which statement is true:
18 / 50
In string manipulation whenever an instruction needs a memory source, which of the following will hold the pointer to it?
19 / 50
The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be
20 / 50
After the execution of STOSW, the CX will be
21 / 50
Which mathematical operation is dominant during the execution of SCAS instruction
22 / 50
If the direction of the processing of a string is from higher addresses towards lower addresses then
23 / 50
Assembly language is:
24 / 50
Each screen location corresponds to a word, the lower byte of this word contains ____
25 / 50
In assembly the CX register is used normally as a ______________register.
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28 / 50
Code Segment is associated to _______ register by default.
29 / 50
8088 is a 16bit processor with its accumulator and all registers of __________.
30 / 50
The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be
31 / 50
Execution of the instruction “mov word [ES : 0], 0x0741” will print
32 / 50
physical address of the stack is obtained by
33 / 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
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35 / 50
_________ is one of the reasons due to which string instructions are used in 8088
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decrements SP (the stack pointer) by two and then transfers a word from the source operand to the top of stack
37 / 50
When a 16 bit number is divided by an 8 bit number, the quotient will be in
38 / 50
In the instruction MOV AX, 5 the number of operands are
39 / 50
A 32 Bit processor has accumulator of ---------
40 / 50
One screen location corresponds to a
41 / 50
In the instruction “CMP AX,BX” the contents of
42 / 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
43 / 50
The prevalent convention in most high level languages is stack clearing by the
44 / 50
one RET is executed, it recovers the values from
45 / 50
The physical address of the stack is obtained by
46 / 50
The routine that executes in response to an INT instruction is called
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48 / 50
49 / 50
After the execution of “PUSH AX” statement
50 / 50
Your score is
The average score is 64%
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