MCQOPTIONS
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MCQOPTIONS
This section includes 11 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 PEACK (active low) when activated, the pin that goes into deactivation is |
| A. | PEREQ |
| B. | ERROR# |
| C. | RESET |
| D. | CMD0 and CMD1 |
| Answer» B. ERROR# | |
| 2. |
Which of the following pin is not involved in the interface of 80287 with 80286? |
| A. | PEREQ |
| B. | ERROR# |
| C. | RESET |
| D. | CMD0 and CMD1 |
| Answer» D. CMD0 and CMD1 | |
| 3. |
If Clock Mode (CM) input pin is held low, then the CLK input is divided by |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 4. |
For which pin of 80286 is the active low pin, BUSY of 80287, connected? |
| A. | ERROR (active low) |
| B. | BUSY (active low) |
| C. | HLDA |
| D. | TEST (active low) |
| Answer» E. | |
| 5. |
Which of the input line(s) indicate that the CPU is performing an escape operation, and enables 80287 to execute the next instruction? |
| A. | NPWR (active low) and NPRD (active low) |
| B. | NPS1 and NPS2 (active low) |
| C. | NPS1 (active low) and NPS2 |
| D. | CMD0 and CMD1 |
| Answer» D. CMD0 and CMD1 | |
| 6. |
If Numeric Processor Read (NPRD) active-low input pin is activated, then it enables a data transfer from |
| A. | memory to processor |
| B. | 80287 to 80286 |
| C. | 80286 to 80287 |
| D. | 8086 to 80287 |
| Answer» C. 80286 to 80287 | |
| 7. |
If Numeric Processor Write (NPWR) active-low input pin is activated, then it enables a data transfer from |
| A. | memory to processor |
| B. | 80287 to 80286 |
| C. | 80286 to 80287 |
| D. | 8086 to 80287 |
| Answer» D. 8086 to 80287 | |
| 8. |
The precision is decided by the |
| A. | opcode |
| B. | extended precision format |
| C. | opcode or extended precision format |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 9. |
The bits that affect the result of arithmetic operations like ADD, SUB, MUL, DIV are |
| A. | condition code bits |
| B. | rounding control bits |
| C. | masking bits |
| D. | precision control bits |
| Answer» E. | |
| 10. |
If the stack flag is set, and condition code bit C1=0, then the stack is |
| A. | full |
| B. | overflown |
| C. | underflown |
| D. | empty |
| Answer» D. empty | |
| 11. |
If the stack flag is set, and condition code bit C1=1, then the stack is |
| A. | full |
| B. | overflown |
| C. | underflown |
| D. | empty |
| Answer» C. underflown | |