Practice What Are Device Files? (6.3.1) - Communication Between Kernel and User Space

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6 sample questions

Question 1.
What is a device file?
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Think about the /dev directory in Linux.
Question 2.
Name two types of device files.
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Consider how they handle data.
3Question 3.
What is the purpose of device files?
- To manage applications
- To represent hardware devices
- To store system settings
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Think about how user applications interact with hardware.
4Question 4.
True or False: Block devices transmit data as a continuous stream.
- True
- False
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Consider the characteristics of block vs character devices.
Question 5.
You need to interface with a custom device file that requires reading and writing as part of a project. Create a basic outline of the Python code you might write to read the file.
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Use the open function in Python to access the device file.
Question 6.
A user reports that their application fails when trying to write to /dev/ttyS0. How will you approach diagnosing the problem?
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Consider file permissions and concurrent access.

5 more questions in this section. Enroll free to practise them all.