
Raspberry Pi For Beginners - 2022 Complete Course - Activity 06 - Solution
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Information Technology (IT), Architecture
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University
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Practice Problem
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of importing the time library in the GPIO setup?
To clean up the GPIO settings
To manage time-based operations like delays
To initialize the GPIO mode
To set the GPIO pin numbers
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which GPIO mode is used in the setup?
GPIO.BCM
GPIO.IN
GPIO.BOARD
GPIO.OUT
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to initialize the state of all LEDs at the start?
To prevent any LED from being powered accidentally
To ensure they are all turned on
To set them to a high state
To configure them as input devices
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the previous button state variable?
To initialize the GPIO pins
To track the last known state of the button
To store the current state of the LEDs
To set the GPIO mode
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How often does the main loop check the button state?
Every 1 second
Every 0.01 seconds
Every 0.1 seconds
Every 0.001 seconds
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the state machine do in the context of this program?
It toggles between different LEDs based on button presses
It initializes the GPIO pins
It sets the GPIO mode
It cleans up the GPIO settings
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when the button state changes from low to high?
All LEDs are turned on
The program exits
The next LED in sequence is powered on
The current LED is turned off
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