1. How to measure application performance in linux 2. File replication tools in Linux 3. mount command example 4. All stages of files in Git 5. Describe git workflow 6. Characteristics of configuration management tools like chef or ansible 7. What is idempotency 8. Docker command to run a container with a volume attached 9. Where are ssh logs stored 10. What is distributed SCM 11. How to port forward in nginx 12. Difference between UNION and JOIN in SQL 13. Difference between WHERE and HAVING clause 14. What makes a subnet public in AWS 15. iptables command to allow traffic on a port 16. Difference between overloading and overriding a method in OOPS

A question regarding how many different salutes would there be in a room with a given number of people.