I recently went through an interview with 2+ years of experience that really put my DevOps knowledge to the test. Thought I'd share some of the questions I was asked, which might help others preparing for similar roles: 1. **What are the day-to-day activities of a DevOps Engineer?** 2. **How do you overcome hurdles in DevOps?** 3. **Why do we need Shell scripting in DevOps?** 4. **What’s the difference between a `cron` job and running it under `sudo`?** 5. **How do you address security issues in `cron` jobs?** 6. **How do you set up Apache on a Linux server?** 7. **What are the steps to convert HTTP to HTTPS?** 8. **What are some limitations of Shell scripting?** 9. **What’s the difference between `$*` and `$@` in Bash?** 10. **Explain Primary Key vs. Foreign Key in databases.** 11. **What’s the difference between the `HAVING` and `WHERE` clauses in SQL?** 12. **Explain different types of JOIN commands in SQL.** 13. **What’s the difference between `DROP`, `TRUNCATE`, ...