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MCQ Problems / Explanations

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MCQ's

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How many digital pins are there on the UNO board?
S Arduino
A
Explanation
It has 14 digital pins input/output pins of which 6 can be used as PWM output, 6 analog inputs, a USB connection, a power jack, a reset button and more.
B
C
D
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_________ board allows sewn into clothing.
S Arduino
A
B
C
Explanation
LilyPad was creatively designed with large connecting pads and a flat back to allow them to be sewn into clothing with conductive thread.
D
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How many analog pins are used in Arduino Mega board?
S Arduino
A
Explanation
It has lots of digital input/output pins, 14 can be used as PWM output 16 analog inputs, a USB connection, a power jack, and a reset button.
B
C
D
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Which board is first to use microcontroller within build USB?
S Arduino
A
B
C
D
Explanation
The Leonard is Arduinos first development board to use one microcontroller with built-in USB. This means that it can be cheaper and simple, And also, code libraries are available which allow the board to emulate a computer keyboard etc.
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___________ are pre built circuit boards that fit on top of Android.
S Arduino
A
B
C
D
Explanation
Shields are pre- built circuit boards that fit on top of board and provide additional capabilities like controlling motors, connecting to internet, providing cellular etc.
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Does Raspberry Pi need external hardware?
S Raspberry Pi
A
B
Explanation
The RPi can be used without additional hardware (except perhaps a power supply of some kind), it wont be much use as a general computer. As with any normal PC, it is likely you need some additional hardware.
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An interconnected collection of piconet is called ___________
S Bluetooth
A
Explanation
Piconet is the basic unit of a bluetooth system having a master node and upto seven active slave nodes. A collection of piconets is called scatternet and a slave node of a piconet may act as a master in a piconet that is part of the scatternet.
B
C
D
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In a piconet, there can be up to ________ parked nodes in the network.
S Bluetooth
A
B
C
Explanation
A slave node in a piconet can be instructed by the master node to go into parked mode. Then the slave node enters the parked mode in which the node is not disconnected from the network but is inactive unless the master wakes it up.
D
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Bluetooth is the wireless technology for __________
S Bluetooth
A
B
Explanation
Bluetooth is a wireless technology used to create a wireless personal area network for data transfer up to a distance of 10 meters. It operates on 2.45 GHz frequency band for transmission.
C
D
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Bluetooth uses __________
S Bluetooth
A
Explanation
Frequency hopping spread spectrum is a method of transmitting radio signals by rapidly changing the carrier frequency and is controlled by the codes known to the sender and receiver only.
B
C
D
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