3 Multiple choice question (MCQ) a) Which of the following instruction is not valid? a) MOV AX, BX b) MOV DS, 5000H c) MOV AX, 5000H d) PUSH AX b) In PUSH instruction, after each execution of the instruction, the stack pointer is a) incremented by 1 b) decremented by 1 c) incremented by 2 d) decremented by 2 c) The instruction that pushes the contents of the specified register/memory location on to the stack is a) PUSHF b) POPF c) PUSH d) POP d) The instruction that pushes the flag register on to the stack is a) PUSH b) POP c) PUSHF d) POPF e) If the data is present in a register and it is referred using the particular register, then it is a) direct addressing mode b) register addressing mode c) indexed addressing mode d) immediate addressing mode f) The instruction, MOV AX,[BX] is an example of a) direct addressing mode b) register addressing mode c) register relative addressing mode d) register indirect addressing mode g) The contents of a base register are added to the contents of index register in a) indexed addressing mode b) based indexed addressing mode c) relative based indexed addressing mode d) based indexed and relative based indexed addressing mode