MCQOPTIONS
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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. |
IF_THE_MICROCONTROLLER_IS_EXPECTED_TO_COMMUNICATE_IN_A_MULTIPROCESSOR_SYSTEM,_THEN_THE_REQUIRED_CONDITION_IS?$ |
| A. | SM0 is set |
| B. | SM1 is set |
| C. | SM2 is set |
| D. | REN is set |
| Answer» D. REN is set | |
| 2. |
IF_SM0=1,_SM1=0,_THEN_THE_TRANSCEIVER_SELECTED_IS?$ |
| A. | 8-bit synchronous |
| B. | 9-bit synchronous |
| C. | 8-bit asynchronous |
| D. | 9-bit asynchronous |
| Answer» E. | |
| 3. |
The mode that offers the most secured parity enabled data communication at lower baud rates is$ |
| A. | mode 2 |
| B. | mode 1 |
| C. | mode 0 |
| D. | all of the mentioned |
| Answer» B. mode 1 | |
| 4. |
In mode 2, the baud rate depends only on$ |
| A. | SMOD bit |
| B. | SCON bit |
| C. | Oscillator clock frequency |
| D. | SMOD bit and oscillator clock frequency |
| Answer» E. | |
| 5. |
During serial reception, the buffer that receives serial bits and converts to a byte i? |
| A. | receive buffer 0 |
| B. | receive buffer 1 |
| C. | receive buffer 2 |
| D. | none |
| Answer» C. receive buffer 2 | |
| 6. |
The common unit shared by the receiver unit and transmission unit of serial communication unit is |
| A. | SCON(Serial Port Control) Register |
| B. | SBUF(Serial Buffer) register |
| C. | 8-bit serial data interface |
| D. | All of the mentioned |
| Answer» E. | |
| 7. |
The transmission unit does not require assistance from processor if once a byte for transmission is written to |
| A. | SCON register |
| B. | SBUF register |
| C. | SFR address |
| D. | Any of the mentioned |
| Answer» C. SFR address | |
| 8. |
The task of converting the byte into serial form and transmitting it bit by bit along with start, stop and parity bits is carried out by |
| A. | reception unit |
| B. | serial communication unit |
| C. | transmission unit |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 9. |
The number of bits transmitted or received per second is defined as |
| A. | transmission rate |
| B. | reception rate |
| C. | transceiver rate |
| D. | baud rate |
| Answer» E. | |
| 10. |
The mcs 51 architecture supports |
| A. | serial transmission and reception |
| B. | simultaneous transmission and reception |
| C. | transmission and reception of data using serial communication interface |
| D. | all of the mentioned |
| Answer» E. | |
| 11. |
The serial communication is used for |
| A. | short distance communication |
| B. | long distance communication |
| C. | short and long distance communication |
| D. | communication for a certain range of distance |
| Answer» C. short and long distance communication | |
| 12. |
The serial communication is |
| A. | cheaper communication |
| B. | requires less number of conductors |
| C. | slow process of communication |
| D. | all of the mentioned |
| Answer» E. | |