100 Essential Operations Interview Questions to Boost Your Career
This article compiles 100 common operations interview questions from major tech companies, covering DevOps principles, CI/CD, infrastructure as code, monitoring, automation, Linux system administration, security, and scripting, providing a comprehensive study guide for aspiring sysadmins and site reliability engineers.
We have gathered interview questions from major tech firms such as ByteDance, Meituan, Xiaohongshu, Alibaba, Tencent, JD.com, and compiled 100 relatively common and universal questions.
The questions are fairly basic; if you can answer them fluently, a salary of 20‑30k is within reach.
Explain the core principles of DevOps.
What are Continuous Integration (CI) and Continuous Deployment (CD)?
Explain the concept of Infrastructure as Code (IaC).
How do you monitor system and application performance?
Describe how you implement automated deployment.
Explain blue‑green deployment and canary deployment.
What is containerization? How does Docker work?
Explain how Kubernetes works and its main components.
Describe how you manage configuration and secrets.
How is security ensured in DevOps practices?
How to set kernel parameters?
Explain RAID and the different RAID levels.
How to find and kill zombie processes?
Explain what SELinux is and its purpose.
How to configure an IP address in Linux?
Explain what LVM is in Linux and its benefits.
Explain what NFS is and how to configure it.
How to use SSH for password‑less login?
Describe the difference between iptables and firewalld.
How to find the process that consumes the most CPU?
Explain the difference between Docker containers and virtual machines.
How to backup and restore a Linux system?
How to set up scheduled tasks (cron jobs)?
Explain what virtual memory is and how to configure it.
How to manipulate strings in Shell scripts?
Explain how to handle files and directories in Shell scripts.
How to use regular expressions in Shell scripts?
Explain I/O redirection and pipelines in Shell scripts.
How to ensure the security of Shell scripts?
MaGe Linux Operations
Founded in 2009, MaGe Education is a top Chinese high‑end IT training brand. Its graduates earn 12K+ RMB salaries, and the school has trained tens of thousands of students. It offers high‑pay courses in Linux cloud operations, Python full‑stack, automation, data analysis, AI, and Go high‑concurrency architecture. Thanks to quality courses and a solid reputation, it has talent partnerships with numerous internet firms.
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