#Operating Systems

12 questions

• What is an operating system and what does it do?Operating Systems#coreJunior›
• What is the difference between a process and a thread?Operating Systems#coreJunior›
• What is virtual memory and why do operating systems use it?Operating Systems#memoryJunior›
• What is a system call, and what are user mode and kernel mode?Operating Systems#coreJunior›
• How does CPU scheduling work, and what are the common algorithms?Operating Systems#performanceMiddle›
• What are race conditions, and how do mutexes and semaphores prevent them?Operating Systems#concurrencyMiddle›
• What is a deadlock, and how do you prevent, avoid, or detect it?Operating Systems#concurrencyMiddle›
• How do paging, the TLB, and page faults work?Operating Systems#memoryMiddle›
• What are the main IPC mechanisms, and when do you use each?Operating Systems#coreMiddle›
• What does a context switch actually cost, and why does it matter?Operating Systems#performanceSenior›
• How do filesystems work: inodes, journaling, and the page cache?Operating Systems#coreSenior›
• How does page replacement work, and what causes thrashing?Operating Systems#memorySenior›