MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 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_READS_THE_DESCRIPTOR_ACCESS_RIGHTS_BYTE_INTO_THE_REGISTER_IS?$ |
| A. | VERW |
| B. | APRL |
| C. | LSL |
| D. | LAR |
| Answer» E. | |
| 2. |
THE_INSTRUCTION_THAT_SETS_THE_ZERO_FLAG,_IF_THE_SEGMENT_REFERRED_TO_BY_THE_SELECTOR,_CAN_BE_WRITTEN_AS?$ |
| A. | VERW |
| B. | APRL |
| C. | LSL |
| D. | LAR |
| Answer» B. APRL | |
| 3. |
The instruction that adjusts the RPL (Requested Privilege Level) of the selector, to the numeric maximum of current selector RPL value is$ |
| A. | LAR |
| B. | VERR |
| C. | LSL |
| D. | APRL |
| Answer» E. | |
| 4. |
The instruction that reads the segment limit into the register, if privilege rules and descriptor type allow is$ |
| A. | VERW |
| B. | APRL |
| C. | LSL |
| D. | LAR |
| Answer» D. LAR | |
| 5. |
The instruction that sets the zero flag, if the segment referred to, by the selector can be read i? |
| A. | VERW |
| B. | VERR |
| C. | LSL |
| D. | LAR |
| Answer» C. LSL | |
| 6. |
The 80286 executes LMSW instruction to enter into |
| A. | real addressing mode |
| B. | protected mode |
| C. | real addressing and protected modes |
| D. | none of the mentioned |
| Answer» C. real addressing and protected modes | |
| 7. |
The NT flag is set by the task switch operation, that is initiated by |
| A. | CALL |
| B. | INT |
| C. | CALL & INT |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
The IRET instruction gets back the execution state of the previous task, if |
| A. | NT (nested task flag) = 1 |
| B. | NT (nested task flag) = 0 |
| C. | IF (interrupt flag) = 1 |
| D. | IF (interrupt flag) = 0 |
| Answer» B. NT (nested task flag) = 0 | |
| 9. |
The instruction that can be used to carry out task switch operation is |
| A. | software interrupt instruction |
| B. | exception |
| C. | external interrupt |
| D. | all of the mentioned |
| Answer» E. | |
| 10. |
The operation that is provided by the internal architecture, to save the execution state of a task is |
| A. | processor reset |
| B. | processor initialization |
| C. | task switch operation |
| D. | halt |
| Answer» D. halt | |
| 11. |
After completion of the first cycle, the first task is again scheduled for the next cycle. This process is known as |
| A. | repetition |
| B. | task switch operation |
| C. | processor initiation |
| D. | none of the mentioned |
| Answer» C. processor initiation | |
| 12. |
Which of the following operation is not carried out by 80286? |
| A. | task switch operation |
| B. | halt |
| C. | processor reset |
| D. | none of the mentioned |
| Answer» E. | |