MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Microprocessors knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
IF_THE_RESULT_IS_ROUNDED_ACCORDING_TO_THE_ROUNDING_CONTROL_BITS,_THEN_THE_EXCEPTION_GENERATED_IS?$ |
| A. | denormalized operand |
| B. | underflow |
| C. | inexact result |
| D. | invalid operation |
| Answer» D. invalid operation | |
| 2. |
TO_OPERATE_8087_IN_MAXIMUM_MODE,_THE_PIN_MN/MX_(ACTIVE_LOW)_IS?$ |
| A. | connected to Vcc or power supply |
| B. | connected to ground |
| C. | left unconnected |
| D. | none of the mentioned |
| Answer» C. left unconnected | |
| 3. |
The instruction that multiplies the content of the stack top by 2n is$ |
| A. | FMUL |
| B. | FPREM |
| C. | FSCAL |
| D. | FCSH |
| Answer» D. FCSH | |
| 4. |
The instruction that stores a copy of top of the stack into the memory, and pops the top of the stack is$ |
| A. | FST |
| B. | FSTP |
| C. | FIST |
| D. | FLD |
| Answer» C. FIST | |
| 5. |
If the opcode bit is D=1, then the source and destination operands are |
| A. | incremented |
| B. | decremented |
| C. | cleared |
| D. | interchanged |
| Answer» E. | |
| 6. |
If the result is infinity, then the exception generated i? |
| A. | overflow |
| B. | invalid operation |
| C. | denormalized operand |
| D. | zero divide |
| Answer» E. | |
| 7. |
The exception generated for a too big result to fit in the format is |
| A. | invalid operation |
| B. | overflow |
| C. | denormalized operand |
| D. | result overflow |
| Answer» C. denormalized operand | |
| 8. |
Invalid operation is the exception generated due to |
| A. | stack overflow |
| B. | stack underflow |
| C. | indeterminate form as result |
| D. | all of the mentioned |
| Answer» E. | |
| 9. |
The register that allows the register programmer to select the required processing options is |
| A. | significant |
| B. | exponent |
| C. | control word register |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 10. |
When the numeric extension unit (NEU) begins its execution, then the signal that is active is |
| A. | BUSY (active high) |
| B. | BUSY (active low) |
| C. | READY (active low) |
| D. | RESET (active high) |
| Answer» B. BUSY (active low) | |
| 11. |
The control unit functions in |
| A. | establishing communication between CPU and memory |
| B. | coordinating the internal coprocessor execution |
| C. | reads and writes memory operands |
| D. | all of the mentioned |
| Answer» E. | |
| 12. |
The unit that receives and decodes the instructions in 8087 is |
| A. | Control unit |
| B. | ALU |
| C. | Numeric extension unit |
| D. | None of the mentioned |
| Answer» B. ALU | |
| 13. |
The unit that executes all the numeric processor instructions in 8087 is |
| A. | Control unit |
| B. | ALU |
| C. | Numeric extension unit |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |