Embedded Systems MCQs Quiz Multiple Choice Questions & Answers

1. How many stack register does an 8087 have?

1. 4
2. 8
3. 16
4. 32

2. How much time period is necessary for the slave to receive the interrupt and transfer the data?

1. 4 clock time period
2. 8 clock time period
3. 16 clock time period
4. 24 clock time period

3. How much voltage does the MC1489 can take ?

1. 12V
2. 5V
3. 3.3V
4. 2.2V

4. In which design activity, the loops are interchangeable?

1. compilation
2. scheduling
3. high-level transformation
4. hardware/software partitioning

5. In which memory, the signals are multiplexed?

1. DRAM
2. SRAM
3. EPROM
4. EEPROM

6. In which register does the data is written in the master device?

1. index register
2. accumulator
3. SPDR
4. status register

7. Name the processor which helps in floating point calculations

1. microprocessor
2. microcontroller
3. coprocessor
4. controller

8. Princeton architecture is also known as

1. von Neumann architecture
2. Harvard
3. RISC
4. CISC

9. The RS232 is also known as

1. UART
2. SPI
3. Physical interface
4. Electrical interface

10. The special tale in the multitasking operating system is also known as

1. task control block
2. task access block
3. task address block
4. task allocating block

11. What are the two major sections in a coprocessor?

1. control unit and numeric control unit
2. integer unit and control unit
3. floating point unit and coprocessor unit
4. coprocessor unit and numeric control unit

12. What can be done for the fine grain protection of the processor?

1. add extra description bit
2. add error signal
3. add wait stage
4. remains unchanged

13. What does ADS indicate in 8250 UART?

1. address signal
2. address terminal signal
3. address strobe signal
4. address generating signal

14. What does API stand for?

1. address programming interface
2. application programming interface
3. accessing peripheral through interface
4. address programming interface

15. What does SPI stand for?

1. serial parallel interface
2. serial peripheral interface
3. sequential peripheral interface
4. sequential port interface

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

31. Which are the serial ports of the IBM PC?

1. COM1
2. COM4 and COM1
3. COM1 and COM2
4. COM3

32. Which are the two main types of processor connection to the motherboard?

1. sockets and slots
2. sockets and pins
3. slots and pins
4. pins and ports

33. Which can be considered as the lower level in the multitasking operating system?

1. process
2. task
3. threads
4. multi threads

34. Which can be supported if the task or process maintains a separate data area for each thread

1. single thread system
2. mono thread system
3. multiple threads
4. dual threads

35. Which company developed 16450?

1. Philips
2. Intel
3. National semiconductor
4. IBM

36. Which company further developed the study of RISC architecture?

1. Intel
2. Motorola
3. university of Berkeley
4. MIPS

37. Which coprocessor supports affine closure?

1. 80187
2. 80287
3. 80387
4. 8088

38. Which design activity helps in the transformation of the floating point arithmetic to a fixedpoint arithmetic?

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

39. Which design activity is in charge of mapping operations to hardware?

1. scheduling
2. high-level transformation
3. hardware/software partitioning
4. compilation

40. Which determines the sequence and the associated tasks priority?

1. scheduling algorithm
2. ready list
3. task control block
4. application register

41. Which interrupt provides system clock in the context switching?

1. software interrupt
2. hardware interrupt
3. peripheral
4. memory

42. Which is the coprocessor of 8086?

1. 8087
2. 8088
3. 8086
4. 8080

43. Which is the early form of non-volatile memory?

1. magnetic core memory
2. ferrimagnetic memory
3. anti-magnetic memory
4. anti-ferromagnetic

44. Which is the first company who defined RISC architecture?

1. Intel
2. IBM
3. Motorola
4. MIPS

45. Which is the most basic non-volatile memory?

1. Flash memory
2. PROM
3. EPROM
4. ROM

46. Which is the most commonly used UART?

1. 8253
2. 8254
3. 8259
4. 8250

47. Which of the architecture is more complex?

1. SPARC
2. MC68030
3. MC68030
4. 8086

48. 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

49. 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

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

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