Exercises
Explore the fundamentals of system calls in operating systems with this UNIX-focused quiz. Test your understanding of how user programs request services from the kernel, including process creation with fork(), program execution with exec(), process termination, and synchronization with wait(). You will also review essential file and process operations such as open(), chmod(), truncate(), pipe(), and getpid(). Ideal for students learning OS concepts, UNIX programming, and kernel-user interactions, this quiz helps reinforce the purpose and practical use of common system calls.
Answer the questions below and check the explanation for each answer.
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System calls provide the interface for programs to request services from the operating system kernel.
The fork() system call is used to create a new process by duplicating the existing process.
The exec() system call replaces the current process image with a new process image.
The exit() system call is used to terminate a process and return control to the parent process.
The wait() system call makes the parent process wait until a child process has finished execution.
The chmod() system call is used to change the permissions of a file.
The open() system call is used to open a file descriptor to access files, enabling read, write, or append operations.
The pipe() system call creates a connection for data transfer between processes, facilitating inter-process communication.
The truncate() system call is used to resize a file, usually reducing its length.
The getpid() system call returns the process ID of the calling process.
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