1. Kangaroo Problem. 2 kangaroo jumps from different point when they will meet on infinite x axis. What if they never meet.
2. Crash Vs hang
3. File Descriptor use in linux
4. Why Runtime exception in java?
5. Difference between checked exception and unchecked exception
6. Code review on code.
7. [[1,2,3],4,5,[[6]],[[7]],[8],9] Flatten the array [1,2,3,4,5,6,7,8,9]
8. Between any 2 number find the number of even number count. e.g between 3 and 11 how many even number: ans: 4, (4,6,8,10)
9. Difference between EBS, Ephemeral, SSD, S3, Glacier.
10. Java coding standard.
11. Exception handling pattern (would you throw IOException)
12. Difference between TCP and UDP.
13. DNS How many type e.g CNAME, A TYPE. Difference.
14. CI/CD pipe line.
15. How do you handle process sometimes crash in production but not in test env.
16. Database : How indexing works at highlevel.
17. Search algorithm by text: 2 sentence had some command word how search algorithm works. Ranking boost and bury.
18. Database what would you prefer integer or varchar and why. if current value is integer could change in future to varchar.
19. Database : What is read transactions.
20. How push mechanism works. How server notifies client running inside firewall.