Practice System Calls (6.2) - Communication Between Kernel and User Space

Practice: System Calls

Lesson 6.2Communication Between Kernel and User Space

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10 questions

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Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a system call?
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Think about communication in an operating system.
Question 2.
Name one system call related to file management.
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Consider how programs access files.
3Question 3.
What is the primary purpose of a system call?
- A) To terminate processes
- B) To allow user applications to request kernel services
- C) To manage memory
- D) To communicate between two user applications
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Think about how user applications perform tasks.
4Question 4.
True or False: In kernel mode, user applications have full control over hardware.
- True
- False
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Remember the distinction between user and kernel modes.
Question 5.
Develop an application using system calls that opens a file, reads its content, and handles possible errors. Explain the system calls used.
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Focus on the order of operations and error management.
Question 6.
Discuss the security implications of system calls and how they prevent unauthorized access to system resources in an operating system.
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Consider user access levels and system criticality.

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