Embedded Systems Multiple Choice Questions and Answers

61. Which of the following allows a lower priority task to run despite the higher priority task is active and waiting to preempt?

1. message queue
2. message passing
3. semaphore
4. priority inversion

62. Which of the following allows the reuse of the software and the hardware components?

1. platform based design
2. memory design
3. peripheral design
4. input design

63. Which of the following are interfaced as inputs to the parallel ports?

1. LEDs
2. switch
3. alphanumeric display
4. seven segmented display

64. Which of the following are interfaced as the outputs to the parallel ports?

1. keyboards
2. switches
3. LEDs
4. knobs

65. Which of the following are the pin efficient method of communicating between other devices?

1. serial port
2. parallel port
3. peripheral port
4. memory port

66. Which of the following are used to test the software?

1. data entity
2. data entry
3. data table
4. data book

67. Which of the following can affect the long distance communication?

1. clock
2. resistor
3. inductor
4. capacitor

68. Which of the following can be described as general-purpose?

1. multifunction I/O port
2. input port
3. DMA port
4. output port

69. Which of the following can be used as a chip select?

1. multifunction I/O port
2. parallel port
3. DMA port
4. memory port

70. Which of the following can be used for long distance communication?

1. I2C
2. Parallel port
3. SPI
4. RS232