Instruction Set of 8086 8088 Questions

MCQ bookmark_border

1.

The instruction that is used to transfer the data from source operand to destination operand is

A

data copy/transfer instruction

B

branch instruction

C

arithmetic/logical instruction

D

string instruction

Correct Answer: A

These instructions are used to copy and transfer the instructions.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

2.

Which of the following is not a data copy/transfer instruction?

A

MOV

B

PUSH

C

DAS

D

POP

Correct Answer: C

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

3.

The instructions that involve various string manipulation operations are

A

branch instructions

B

flag manipulation instructions

C

shift and rotate instructions

D

string instructions

Correct Answer: D

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

4.

Which of the following instruction is not valid?

A

MOV AX, BX

B

MOV DS, 5000H

C

MOV AX, 5000H

D

PUSH AX

Correct Answer: B

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

5.

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

Correct Answer: D

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

6.

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

Correct Answer: C

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

7.

In POP 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

Correct Answer: C

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

8.

The instructions that are used for reading an input port and writing an output port respectively are

A

MOV, XCHG

B

MOV, IN

C

IN, MOV

D

IN, OUT

Correct Answer: D

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

9.

The instruction that is used for finding out the codes in case of code conversion problems is

A

XCHG

B

XLAT

C

XOR

D

JCXZ

Correct Answer: B

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

10.

The instruction that loads effective address formed by destination operand into the specified source register is

A

LEA

B

LDS

C

LES

D

LAHF

Correct Answer: A

Check Answer report_problem Report forum Discussion