MCQOPTIONS
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MCQOPTIONS
This section includes 243 Mcqs, each offering curated multiple-choice questions to sharpen your Internet of things (IoT) knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
TACLR bit in TACTL |
| A. | clear the interrupt flag |
| B. | clear the status flags |
| C. | clear the count in TAR |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 2. |
THE RTC module makes use of the Basic Timer1 because |
| A. | its bytes are controlled in the Basic Timer1 register |
| B. | it is started by timer1 |
| C. | it is ended by basic timer1 |
| D. | it needs a clock pulse of 1hz that is provided by basic timer1 |
| Answer» E. | |
| 3. |
_ _low_ power_mode_0() states the processor to |
| A. | enable the interrupt |
| B. | disable the interrupt |
| C. | nothing |
| D. | to go in an active mode |
| Answer» B. disable the interrupt | |
| 4. |
TACCTLn is a |
| A. | set of 2 bits used for selecting the mode of operation of the timer |
| B. | a register of 8 bits used for giving the count to the timer |
| C. | a register of 16 bits used to select the compare/ capture channel of the timer |
| D. | a register of 16 bits used to cause the timer interrupt |
| Answer» D. a register of 16 bits used to cause the timer interrupt | |
| 5. |
The second part of the ADC’s output is in the form of |
| A. | the fast stream of single bits |
| B. | the fast stream of multiple bits |
| C. | the slow stream of single bits |
| D. | the slow stream of multiple bits |
| Answer» E. | |
| 6. |
The SD16 has a second-order modulator with a |
| A. | sinc filter |
| B. | sinc^2 filter |
| C. | sinc^3 fiter |
| D. | rect filter |
| Answer» D. rect filter | |
| 7. |
According to conventions being followed, R12 to R15 are used for |
| A. | parameter passing |
| B. | preserved for call |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» B. preserved for call | |
| 8. |
Which of the following commands takes more than 100 microseconds to run? |
| A. | shift cursor left |
| B. | shift cursor right |
| C. | set address location of the DDRAM |
| D. | clear screen |
| Answer» E. | |
| 9. |
External RST/NMI pin is a non maskable interrupt? |
| A. | true |
| B. | false |
| C. | can't be said |
| D. | depends on the conditions |
| Answer» B. false | |
| 10. |
Resolution is |
| A. | change in measured value from the true value |
| B. | the amount of change in the input value for the corresponding change of 1 unit in the output value |
| C. | as the measure of the repeated accuracy |
| D. | all of the mentioned |
| Answer» C. as the measure of the repeated accuracy | |
| 11. |
RTC is used for |
| A. | conversion |
| B. | communication |
| C. | real time and clock measurement |
| D. | memory management |
| Answer» D. memory management | |
| 12. |
Ounch-inch is a unit of a torque. |
| A. | true |
| B. | false |
| C. | can’t say |
| D. | depends on the situation |
| Answer» B. false | |
| 13. |
Identify the row and the column for the following case when for the row D3-D0= 1110 and for the column D3-D0= 1101 |
| A. | first row and second column |
| B. | first row and third column |
| C. | second row and first column |
| D. | second row and second column |
| Answer» B. first row and third column | |
| 14. |
Why are opto isolators normally used between the micro controllers and the ULN2803? |
| A. | to optimise the current |
| B. | to reduce the back emf |
| C. | to increase the current |
| D. | to increase the voltage |
| Answer» C. to increase the current | |
| 15. |
Setting the WDTTMSEL bit of the WDTCTL register makes the watchdog timer act as |
| A. | interrupt |
| B. | communication device |
| C. | converter |
| D. | interval timer |
| Answer» E. | |
| 16. |
In an external hardware, their are how many pins available for the LM35 and the LM34 based sensors? |
| A. | 2 |
| B. | 3 |
| C. | 10 |
| D. | 1 |
| Answer» C. 10 | |
| 17. |
What does the CH bit of the DS1307 demonstrate? |
| A. | clock high |
| B. | clock halt |
| C. | clear high |
| D. | clear halt |
| Answer» C. clear high | |
| 18. |
DS1307 control register has an address of |
| A. | 00H |
| B. | 03H |
| C. | 07H |
| D. | 10H |
| Answer» D. 10H | |
| 19. |
Which of the following instructions do not affect the status bits? |
| A. | bis |
| B. | bic |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 20. |
Their is double buffering in the immediate mode? |
| A. | true |
| B. | false |
| C. | can't be said |
| D. | depends on the conditions |
| Answer» C. can't be said | |
| 21. |
Why are ULN2803 normally used between the micro controllers and the relays? |
| A. | for switching purposes |
| B. | for increasing the current capability required by a relay |
| C. | for increasing the voltage capability required by a relay |
| D. | all of the mentioned |
| Answer» C. for increasing the voltage capability required by a relay | |
| 22. |
I2C is faster means of data transfer than SPI? |
| A. | yes |
| B. | no |
| C. | depends on the conditions |
| D. | can't be said |
| Answer» C. depends on the conditions | |
| 23. |
Time stamp inputs can be measured by a Timer_A? |
| A. | yes |
| B. | no |
| C. | can't be said |
| D. | depends on the conditions |
| Answer» B. no | |
| 24. |
SPI with the USI can be selected by |
| A. | setting the USII2C bit in the register USICTL1 |
| B. | clearing the USII2C bit in the register USICTL1 |
| C. | setting the USIPE5–7 bits in USICTL0 |
| D. | clearing the USIPE5–7 bits in USICTL0 |
| Answer» C. setting the USIPE5–7 bits in USICTL0 | |
| 25. |
CAREFx bits are used for |
| A. | inputting a positive reference voltage |
| B. | inputting a negative reference voltage |
| C. | selecting the internal reference voltage |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 26. |
WDTIFG flag gets cleared if |
| A. | if is interrupt had occurred |
| B. | if the interrupt is serviced |
| C. | if there can be no interrupt |
| D. | all of the mentioned |
| Answer» C. if there can be no interrupt | |
| 27. |
Which of the following is an effect of a Schmidt trigger? |
| A. | it turns slowly varying inputs, which might cause problems while they pass slowly through the undefined range of input voltages, into abrupt, clean logical transitions |
| B. | It eliminates the effect of noise on the input, provided that it is not large enough to span the gap between the upward and downward thresholds |
| C. | none of the mentioned |
| D. | all of the mentioned |
| Answer» E. | |
| 28. |
What are the actual steps that are followed in identifying any key that is being pressed? |
| A. | wait for the debounce time |
| B. | identify the key that is pressed |
| C. | initially no key should be pressed |
| D. | all of the mentioned |
| Answer» E. | |
| 29. |
The input to the ADC10 is selected from_______bits of the ADC10CTL1 register? |
| A. | INCHx |
| B. | ADC10SC |
| C. | ADC10ON |
| D. | ENC |
| Answer» B. ADC10SC | |
| 30. |
A pull-up or pull-down resistor |
| A. | removes the full output drive on the output pin |
| B. | gives only a feeble current through the pull-up to resistor |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 31. |
After interrupt has occurred, the stack is filled with |
| A. | return address |
| B. | status register |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 32. |
CAON bit is used to |
| A. | start a timer |
| B. | start a A/D conversion |
| C. | switch on the comparator module |
| D. | switch on the bit transmission |
| Answer» D. switch on the bit transmission | |
| 33. |
Is the approach of making subroutines effective or not? |
| A. | yes |
| B. | no |
| C. | can't be said |
| D. | depends on the conditions |
| Answer» B. no | |
| 34. |
SCLK, SDO, and SDI are found___________on F20x3. |
| A. | P1.0-2 |
| B. | P1.2-4 |
| C. | P1.4-6 |
| D. | P1.5-7 |
| Answer» E. | |
| 35. |
MCLK must first be started |
| A. | for synchronization |
| B. | for input |
| C. | for CPU to handle the interrupts |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 36. |
For receiving the acknowledgement |
| A. | SDA from transmitter should be high |
| B. | SDA from transmitter should be low |
| C. | SDA from receiver should be high |
| D. | SDA from receiver should be low |
| Answer» E. | |
| 37. |
Their are _____ number of addressing modes found for the source and _____ number of modes for the destination part? |
| A. | 4,4 |
| B. | 2,4 |
| C. | 4,2 |
| D. | 2,2 |
| Answer» D. 2,2 | |
| 38. |
To improve the efficiency of a MSP430 based micro controller, for one register |
| A. | their is only one value for all addressing modes |
| B. | their are two values for each addressing mode |
| C. | their are 2 values for four addressing modes |
| D. | their are 4 values for four addressing modes |
| Answer» E. | |
| 39. |
What is the function of this instruction “WDTCTL = WDTPW | WDTCONFIG”, where **#define WDTCONFIG (WDTCNTCL|WDTSSEL)** |
| A. | it sets the watchdog timer |
| B. | it configures and clears the watchdog timer |
| C. | it stops the watchdog timer |
| D. | it configures and sets the watchdog timer |
| Answer» C. it stops the watchdog timer | |
| 40. |
Which of the following bits is a bit of the status register that allows the micro controller to operate in its low power mode? |
| A. | Z |
| B. | Reserved |
| C. | CPU off |
| D. | N |
| Answer» D. N | |
| 41. |
Timer_B includes |
| A. | sampling inputs |
| B. | driving outputs |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» C. both of the mentioned | |
| 42. |
Timer_A can be used to |
| A. | generate interrupts |
| B. | handle external inputs |
| C. | drive outputs |
| D. | all of the mentioned |
| Answer» E. | |
| 43. |
Basic Timer1 can provide |
| A. | clock for the LCD |
| B. | an internal timer |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 44. |
The SNR_______ with the increase of the number of bits. |
| A. | remains constant |
| B. | goes up |
| C. | goes down |
| D. | goes asymmetrically |
| Answer» C. goes down | |
| 45. |
Is SPI a full duplex technique? |
| A. | yes |
| B. | no |
| C. | can't be said |
| D. | depends on the conditions |
| Answer» B. no | |
| 46. |
P1IE and P1IES are registers that are used to |
| A. | control the Port1 digital i/o ports |
| B. | control the Port1 interrupts |
| C. | control the Port1 serial communication interfaces |
| D. | all of the mentioned |
| Answer» C. control the Port1 serial communication interfaces | |
| 47. |
If the pins of the keyboard are used as an interrupt, then these pins will cause interrupt of what type? |
| A. | External hardware interrupt |
| B. | Timer interrupt |
| C. | TI/RI interrupt |
| D. | None of the mentioned |
| Answer» B. Timer interrupt | |
| 48. |
The watchdog counts up and resets the MSP430 when it reaches the limit? |
| A. | true |
| B. | false |
| C. | can't be said |
| D. | depends on the conditions |
| Answer» B. false | |
| 49. |
mov.w R3, R4 takes |
| A. | one cycle |
| B. | two cycles |
| C. | four cycles |
| D. | eight cycles |
| Answer» B. two cycles | |
| 50. |
ret instruction is used for |
| A. | determining the end of the program |
| B. | for returning back from the subroutine to the main program |
| C. | for transferring data from one place to another |
| D. | none of the mentioned |
| Answer» C. for transferring data from one place to another | |