MCQOPTIONS
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MCQOPTIONS
This section includes 36 Mcqs, each offering curated multiple-choice questions to sharpen your Embedded Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following can be described as general-purpose? |
| A. | multifunction I/O port |
| B. | input port |
| C. | dma port |
| D. | output port |
| Answer» B. input port | |
| 2. |
Which of the following are interfaced as the outputs to the parallel ports? |
| A. | keyboards |
| B. | switches |
| C. | LEDs |
| D. | knobs |
| Answer» D. knobs | |
| 3. |
A chip in a computer that converts parallel data from the bus into serial data that flows through a serial cable, is called |
| A. | UART |
| B. | SCSI |
| C. | MIDI |
| D. | USB |
| Answer» B. SCSI | |
| 4. |
The standard used in serial ports to facilitate communication is |
| A. | RS-246 |
| B. | RS-LNK |
| C. | RS-232-C |
| D. | RST 3 |
| Answer» D. RST 3 | |
| 5. |
Serial ports are connected to |
| A. | external modem |
| B. | internal modem |
| C. | motherboard |
| D. | printer |
| Answer» B. internal modem | |
| 6. |
USB stands for ............... |
| A. | Universal Serial Bus |
| B. | Universal Synchronous Bus |
| C. | Unified Serial Bus |
| D. | Ultra Speed Bus |
| Answer» B. Universal Synchronous Bus | |
| 7. |
Serial port is used to connect processor and |
| A. | I/O devices |
| B. | speakers |
| C. | printer |
| D. | monitor |
| Answer» B. speakers | |
| 8. |
In serial port interface, the INTR line is connected to |
| A. | status register |
| B. | shift registers |
| C. | chip select |
| D. | map register |
| Answer» B. shift registers | |
| 9. |
The socket that supplies the power from the computer system to the computer monitor. |
| A. | Monitor Power Socket |
| B. | Main Power Socket |
| C. | PS/2 Mouse Port |
| D. | None of the above |
| Answer» B. Main Power Socket | |
| 10. |
What should be installed first, the USB device or the USB driver? |
| A. | USB device |
| B. | USB driver |
| C. | It doesn’t matter |
| D. | It depends on the device |
| Answer» C. It doesn’t matter | |
| 11. |
Mode of transmission of data, where one bit is sent for each clock cycle is |
| A. | asynchronous |
| B. | parallel |
| C. | serial |
| D. | isochronous |
| Answer» E. | |
| 12. |
The place on your system unit through which information and instructions flow to your computer system referred to as a: |
| A. | Bus |
| B. | Port |
| C. | Card |
| D. | Circuit |
| Answer» C. Card | |
| 13. |
Transformation between the parallel and serial ports is done with the help of |
| A. | flip flops |
| B. | logic circuits |
| C. | shift registers |
| D. | peripherals |
| Answer» D. peripherals | |
| 14. |
Components used to increase the flexibility of the serial ports is |
| A. | wire used for port is changed |
| B. | ports are made to allow different clock signals for input and output |
| C. | the drives are modified |
| D. | connect the new cables |
| Answer» C. the drives are modified | |
| 15. |
The data transfer in UART is done in |
| A. | asynchronous start stop format |
| B. | synchronous start stop format |
| C. | isochronous format |
| D. | EBCDIC format |
| Answer» B. synchronous start stop format | |
| 16. |
The transformation between the Parallel and serial ports is done with the help of ______. |
| A. | Flip flops |
| B. | Logic circuits |
| C. | shift registers |
| D. | None of the above |
| Answer» D. None of the above | |
| 17. |
Classic DMA is used on most systems only by the ____. |
| A. | floppy drive |
| B. | keyboard |
| C. | printer |
| D. | processor |
| Answer» B. keyboard | |
| 18. |
What determines the type of case a motherboard needs and provides maximum expansion slot limit? |
| A. | Chipset |
| B. | Component |
| C. | Expansion slot |
| D. | Form factor |
| Answer» E. | |
| 19. |
WHICH_OF_THE_FOLLOWING_CAN_BE_DESCRIBED_AS_GENERAL-PURPOSE??$ |
| A. | multifunction I/O port |
| B. | input port |
| C. | dma port |
| D. | output port |
| Answer» B. input port | |
| 20. |
DDR_STANDS_FOR___________?$ |
| A. | Data Direction Register |
| B. | Data Decoding Register |
| C. | Data Decoding Rate |
| D. | None of the mentioned |
| Answer» B. Data Decoding Register | |
| 21. |
In_a_general_8-bit_parallel_interface,_the_INTR_line_is_connected_to________$ |
| A. | Status and Control unit |
| B. | DDR |
| C. | Register select |
| D. | None of the mentioned |
| Answer» B. DDR | |
| 22. |
Which of the following is necessary for the parallel input-output port? |
| A. | inductor |
| B. | pull-up resistor |
| C. | push-up resistor |
| D. | capacitor |
| Answer» C. push-up resistor | |
| 23. |
In the output interface of the parallel port, along with the valid signal ______ is also sent? |
| A. | Data |
| B. | Idle signal |
| C. | Interrupt |
| D. | Acknowledge signal |
| Answer» C. Interrupt | |
| 24. |
Which of the following can be used as a chip select? |
| A. | multifunction I/O port |
| B. | parallel port |
| C. | DMA port |
| D. | memory port |
| Answer» B. parallel port | |
| 25. |
The Status flag circuit is implemented using _____ |
| A. | RS flip flop |
| B. | D flip flop |
| C. | JK flip flop |
| D. | Xor circuit |
| Answer» C. JK flip flop | |
| 26. |
Which of the following registers offers high impedance? |
| A. | data register |
| B. | data direction register |
| C. | individual control bit |
| D. | data register and data direction register |
| Answer» D. data register and data direction register | |
| 27. |
In a 32 bit processor, the A0 bit of the address line is connected to _____ of the parallel port interface. |
| A. | Valid bit |
| B. | Idle bit |
| C. | Interrupt enable bit |
| D. | Status or data register |
| Answer» E. | |
| 28. |
How buffers are enabled in the parallel ports? |
| A. | by the data register |
| B. | by data direction register |
| C. | by individual control register |
| D. | by data and individual control register |
| Answer» C. by individual control register | |
| 29. |
The disadvantage of using a parallel mode of communication is ______ |
| A. | It is costly |
| B. | Leads to erroneous data transfer |
| C. | Security of data |
| D. | All of the mentioned |
| Answer» B. Leads to erroneous data transfer | |
| 30. |
Which of the following is also known as tri-state? |
| A. | output port |
| B. | input port |
| C. | parallel port |
| D. | output-input port |
| Answer» B. input port | |
| 31. |
The output of the encoder circuit is/are ______ |
| A. | ASCII code |
| B. | ASCII code and the valid signal |
| C. | Encoded signal |
| D. | None of the mentioned |
| Answer» C. Encoded signal | |
| 32. |
How many registers are there to control the parallel port in the basic form? |
| A. | 1 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» D. 5 | |
| 33. |
The best mode of connection between devices which need to send or receive large amounts of data over a short distance is _____ |
| A. | BUS |
| B. | Serial port |
| C. | Parallel port |
| D. | Isochronous port |
| Answer» D. Isochronous port | |
| 34. |
To overcome multiple signals being generated upon a single press of the button, we make use of ______ |
| A. | Generator circuit |
| B. | Debouncing circuit |
| C. | Multiplexer |
| D. | XOR circuit |
| Answer» C. Multiplexer | |
| 35. |
Which of the following are interfaced as inputs to the parallel ports? |
| A. | LEDs |
| B. | switch |
| C. | alphanumeric display |
| D. | seven segmented display |
| Answer» C. alphanumeric display | |
| 36. |
Which of the following can transfer multiple bits of data simultaneously? |
| A. | serial port |
| B. | sequential port |
| C. | concurrent unit |
| D. | parallel port |
| Answer» E. | |