Embedded Systems Multiple Choice Questions and Answers for Practice

16. What does the processor fetches from the EPROM if the board is powered?

1. reset vector
2. ready vector
3. start vector
4. acknowledge vector

17. What does UART stand for?

1. universal asynchronous receiver transmitter
2. unique asynchronous receiver transmitter
3. universal address receiver transmitter
4. unique address receiver transmitter

18. What happens to the interrupts in an interrupt service routine?

1. disable interrupt
2. enable interrupts
3. remains unchanged
4. ready state

19. What happens when 8 bits are transferred in the SPI?

1. wait statement
2. ready statement
3. interrupt
4. remains unchanged

20. What is 80/20 rule?

1. 80% instruction is generated and 20% instruction is executed
2. 80% instruction is executed and 20% instruction is generated
3. 80%instruction is executed and 20% instruction is not executed
4. 80% instruction is generated and 20% instructions are not generated

21. What is CAM stands for?

1. content-addressable memory
2. complex addressable memory
3. computing addressable memory
4. concurrently addressable memory

22. What is the clock frequency of 8087?

1. 10 MHz
2. 5 MHz
3. 6 MHz
4. 4 MHz

23. What is the main purpose of the memory management unit?

1. address translation
2. large storage
3. reduce the size
4. provides address space

24. What is the purpose of address bus?

1. to provide data to and from the chip
2. to select a specified chip
3. to select a location within the memory chip
4. to select a read/write cycle

25. What rate can define the timing in the UART?

1. bit rate
2. baud rate
3. speed rate
4. voltage rate

26. Which activity is concerned with identifying the task at the final embedded systems?

1. high-level transformation
2. compilation
3. scheduling
4. task-level concurrency management

27. Which allows the full duplex synchronous communication between the master and the slave?

1. SPI
2. serial port
3. I2C
4. parallel port

28. Which allows the parallel development of the hardware and software in the simulation?

1. high-level language simulation
2. low-level language simulation
3. cpu simulator
4. onboard simulator

29. Which allows the UNIX software to be ported using a simple recompilation?

1. pSOS+
2. UNIX compatible library
3. pSOS+m
4. pOS+kernel

30. Which are the processors based on RISC?

1. SPARC
2. 80386
3. MC68030
4. MC68020