How to Master 100+ Top Tech Ops Interview Questions and Land 20k+ Offers

The author has gathered interview questions from major Chinese tech companies—including ByteDance, Meituan, Xiaohongshu, Alibaba, Tencent and JD—focusing on questions that are relatively basic and widely applicable. Mastering these questions is suggested to increase the chance of earning a 20‑30k salary offer.

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 would 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 to manage configuration and secrets.

How is security ensured in DevOps practices?

How to set kernel parameters?

Explain RAID and the differences between 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 differences between iptables and firewalld.

How to find the process that consumes the most CPU?

Explain what Docker containers are and how they differ from 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 a Shell script?

Explain how to handle files and directories in a Shell script.

How to use regular expressions in a Shell script?

Explain I/O redirection and pipelines in Shell scripts.

How to ensure the security of a Shell script?

The list continues up to question 79, covering a broad range of topics such as system monitoring, CI/CD pipelines, container orchestration, Linux administration, security, and scripting. The article originally included QR‑code prompts for a free download, which have been omitted as they are promotional.