What is a system call, and why is it needed?

What is a system call, and why is it needed?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: easy

标签: interviewbit, operating-system, topic-specific, os, cs-fundamentals

参考答案摘要

A system call is a mechanism that allows a program running in user mode to request services from the kernel. Operations like file access, process creation, and memory allocation require kernel-level p...

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