MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Microprocessors knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
THE_INSTRUCTION_THAT_SHIFTS_THE_SPECIFIED_NUMBER_OF_BITS_IN_THE_INSTRUCTION,_FROM_THE_UPPER_SIDE_OF_THE_SOURCE_OPERAND_INTO_THE_LOWER_SIDE_OF_THE_DESTINATION_OPERAND_IS?$ |
| A. | SHRD |
| B. | SHLD |
| C. | SETNS |
| D. | None of the mentioned |
| Answer» C. SETNS | |
| 2. |
The_instruction_that_shifts_8_LSB_bits_of_ECX_into_the_MSB_positions_of_EAX,_one_by_one_starting_from_LSB_of_ECX_is$ |
| A. | SHLD ECX,EAX,8 |
| B. | SHLD EAX,ECX,8 |
| C. | SHRD ECX,EAX,8 |
| D. | SHRD EAX,ECX,8 |
| Answer» E. | |
| 3. |
Which of the following is not a conditional set byte instruction? |
| A. | SETNP |
| B. | SETO |
| C. | SETNAE |
| D. | SHRD |
| Answer» E. | |
| 4. |
In case of BT instruction, if the bit position in the destination operand specified by the source operand, is ‘1’, then$ |
| A. | zero flag is reset |
| B. | carry flag is set |
| C. | VM flag is set |
| D. | RF flag is reset |
| Answer» C. VM flag is set | |
| 5. |
Which of the following is not a bit test instruction? |
| A. | BTC |
| B. | BTS |
| C. | BSF |
| D. | BTR |
| Answer» D. BTR | |
| 6. |
If a ‘1’ is encountered when an operand is scanned by BSF, then$ |
| A. | zero flag is reset |
| B. | zero flag is set |
| C. | VM flag is set |
| D. | RF flag is reset |
| Answer» C. VM flag is set | |
| 7. |
The BSF (bit scan forward) instruction scans the operand in the order |
| A. | from left to right |
| B. | from right to left |
| C. | from upper nibble |
| D. | none of the mentioned |
| Answer» C. from upper nibble | |
| 8. |
Which of the following is not a newly added instruction of 80386, that are not present in 80286? |
| A. | bit scan instructions |
| B. | bit test instructions |
| C. | shift double instructions |
| D. | none of the mentioned |
| Answer» E. | |