Devops Interview Questions-1

1. How do you expect you would be required to multitask as a DevOps professional?
2. What testing is necessary to ensure that a new service is ready for production?
3. What’s a PTR in DNS?
4. Describe two-factor authentication?
5. What are the advantages of NoSQL database over RDBMS?
6. What is an MX record in DNS?
7. What is DevOps?
8. Where can DevOps needed in the organization?
9. What are the core operations of DevOps?
10. What are the principles of DevOps?
11. How would you prepare for a migration?
12. Explain your understanding and expertise on both the software development side and the technical operations side of an organization you’ve worked for in the past.
13. What is the difference between RAID 0 and RAID 1?
14. How much have you interacted with cloud based software development?
15. How can you reduce load time of a dynamic website?
16. How would you ensure traceability?
17. Describe the advantages/disadvantages of using CloudFormation to manage your resources
18. Would you use CloudFormation to create a RDS database?
19. Describe EC2 spot instances and which use cases it can be used to reduce costs
20. Talk about IAM roles
21. Talk about VPC's,Subnets,Internet Gateways,NATing,NACL's,VPN/VPC Peering
22. Have you used Puppet, Chef, Salt or Ansible?
23. How long have you used it for? 
24. Have you used it in production?
25. Describe the size of the environment that you automated (how many servers, small scale or large scale) 
26.  What is the difference between Linux and Unix ?
27.  What's a KVM ?
28.  How would you make sure a service starts on an OS of your choice ?
29.  Here's a terminal. What flavor of Linux is running ?
30.  Write a command to delete all empty file under a directory.
31.  Kill all the procs by a particular user without using pkill
32.  What is Active Directory ? How do you make a server join a domain ?
33.  What is the difference between TCP and UDP ? 
34.  What is ICMP ? Why should you block it ? 
35.  What is IPv6 ? Why should we care ? 
36.  In a corporate environment users from London can ping a particular server but users from New York cannot, what steps will you take to troubleshoot the problem ? 
37.  What steps are needed to change the hostname on a Linux machine ? 
38.  Where is the hostname file on a Windows server ? 
39.  How is a hostname resolved on a Linux machine ? 
40.  What's a SSL tunnel ? 
41.  What's a SDN ?
42.  What is your favorite scripting language ? Why ?
43.  What are design patterns ?
44.  Describe some scripts you have written/automation you have done/ programs you have written. Justify your choice of scripting language and design patterns.
45.  Can you port the same script to another language ? On another OS ?
46.  How long would it take you to learn another language ?
47. Have you used AWS or other cloud platforms? 
48. How long for? 
49. In production or just at home on personal projects? 
50. How to keep logs on servers or containers with ephemeral storage? 
51. Where to look when trying to reduce cloud costs without reducing capacity? 

These are small set questions on Devops. We will update more on this in out future posts.If you know the answers to the above questions write in comments by providing q.no .We will update in this blog so every one acces it

Thanks

Devops Desk Team