Cs401 Current Quizzes

Cs401 Current Quizzes


if we apply NOT operation of bit 1 the answer is also 1

1. true
2. false

The execution of the instruction "mov word [ES : 160], 0x1230" will print a character on the screen at:

1.  First column of second row
2.  Second column of first row
3.  Second column of second row
4.  First column of third row

Which type of shif operation it is "The zero bit is inserted from the right and every bit moves one position to its left with the most significant bit dropping into the carry flag"

1. shl
2. sal
3. sar
4. both shl and sal

In XOR operation the output is 1 if

1. both inputs are same
2. both inputs are different
3. I and II
4.  none of the above

Far jump is position relative.

1. true
2. false

After the execution of STOSWB, the CX will be:

1.  Incremented by 1
2.  Decremented by 1
3.  Incremented by 2
4.  Decremented by 2

In And the out put only one if

1. Both inputs are 0
2. One is 0 and other is 1
3. Both are 1
4. None of the given

__________ transfers the word at the current top of stack (pointed to by SP) to the destination operand and then increments SP by two to point to the new top of stack.

1. push
2. pop
3. call
4. none of given

When the operand of DIV instruction is of 16-bits then implied dividend will be stored in

1.  AX register
2. The concatenation of DX and AX
3. The concatenation of ES and AX
4.  The concatenation of DS and BX

In near jump we jump any where within a segment.

1.  true
2.  false

In string instructions, the mode is called auto-increment mode when:

1.  CX is set
2.  ZF is cleared
3.  DF is set
4.  DF is cleared

How many characters standard ASCII has?

1. 512
2. 256
3. 128
4. 64

Which of the following is the pair of register used to access memory in string instructions?

1. DI and BP
2.  SI and BP
3.  DI and SI
4.  DS and SI

RET do not pops the word at the top of the stack (pointed to by register SP) into the instruction pointer but increments SP by two.

1. true
2. false

The operations of placing items on the stack and removing them from there are called push and ret.

1. true
2. false

In a video memory, each screen location corresponds to:

1. 8 byte
2. 4 byte
3. 2 byte
4. 1 byte

The Operation of Push is if "we push ax" then SP<-- SP+2 [SP]<-- AX

1. true
2. false

The purpose of MOVS instruction is:

1. Move register to register
2. Move register to a memory location
3. Move a memory location to register
4. Move memory to memory

When the operand of DIV instruction is of 16 bits then implied dividend will be of

1. 32 bit
2. 64 bit
3. 16 bit
4. 8 bit

Parameters clears from the stack by the

1. caller
2. callee
3. caller and callee
4. none of given