CS401 Midterm Online Quiz

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CS401-Midterm

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The physical address of the stack is obtained by

2 / 50

After the execution of STOSW the CX will be

3 / 50

The basic function of SCAS instruction is to

4 / 50

mov ax,5 has

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The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be

6 / 50

which bit sets the character "blinking" on the screen?

7 / 50

Which bit of the attributes byte represents the red component of background color ?

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one Only ___________ instructions allow moving data from memory to memory.

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After the execution of SAR instruction:

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In assembly the CX register is used normally as a ______________register.

11 / 50

One screen location corresponds to a

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The physical address of the stack is obtained by

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If the direction of the processing of a string is from higher addresses towards lower addresses then

14 / 50

The instruction ADC has________ Operand(s)

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Which bit of the attributes byte represents the blue component of foreground color

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Stack is a ______ that behaves in a first in last out manner.

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REP will always

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After the execution of instruction “RET ”

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In a video memory, each screen location corresponds to

20 / 50

The physical address of the stack is obtained by

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8088 is a 16bit processor with its accumulator and all registers of __________.

22 / 50

The first instruction of “COM” file must be at offset:

23 / 50

Which bit of the attributes byte represents the red component of background color ?

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In the instruction “CMP AX,BX” the contents of

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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

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physical address of the stack is obtained by

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Regarding assembler, which statement is true:

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The routine that executes in response to an INT instruction is called

29 / 50

The iAPX888 architecture consists of _______ register.

30 / 50

In 8088 architecture, whenever an element is pushed on the stack

31 / 50

In STOSB instruction, when DF is Set, SI is

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After the execution of REP instruction CX will be decremented then which of the following flags will be affected?

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When a 16 bit number is divided by an 8 bit number, the quotient will be in

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A 32 Bit processor has accumulator of ---------

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When a very large number is divided by very small number so that the quotient is larger than the space provided, this is called

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Assembly language is:

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Left-Shift-Operation the left most bit _______

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Each screen location corresponds to a word, the lower byte of this word contains ____

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allow changing specific processor behaviors and are used to play with it.

40 / 50

The clear screen operation initialize whole block of memory

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Which of the following options contain the set of instructions to open a window to the video memory?

42 / 50

The routine that executes in response to an INT instruction is called

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When a 32 bit number is divided by a 16 bit number, the quotient will be stored in

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MOV instruction transfers a byte or word from which of the following source location.

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Which bit of the attributes byte represents the blue component of background color ?

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All the addressing mechanisms iniAPX88 return a number called ______ address.

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The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen, color of the character will be

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While using STOBS, if DF=1 then

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After the execution of “PUSH AX” statement

50 / 50

_________ is one of the reasons due to which string instructions are used in 8088

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