DevOps interview questions

by Monika Dadool 06-Mar-19

0 1214


1) What do you mean by DevOps?

DevOps is a software development methodology whose objective is to become a bridge GAP between development and operational team of the Company. Its emphasis on the collaboration and communication of developers and other IT professionals. Basically, it resolves all conflicts between OPS and development team and main targets on fast software delivery with fewer failure rates.


2) List some of the key elements of DevOps?

a) Infrastructure as code

b) Automation

c) Monitoring

d) Security

e) Continuous deployment

f) Accelerating speed of delivering applications 

g) Frequently learning improvement via feedback

h) Animated by Agile Process

i) Increase Deployment frequency

j) Lessen lead time between fixes

k) Eliminate disconnects

l) Real-time feedback loop concept


3) What do you mean by continuous Integration in DevOps?

Continuous integration acts as a secondary element of the Agile process. In this practice, developers continuously merge their code modification into a central repository and act as an integration phase of the software release process with an objective of monitoring bugs and quality improvement and reducing time delay of software release and validation.


4) What is the role of Amazon Web Services in DevOps?

AWS delivers services beneficial for DevOps practicing at the various organization. This software automates entire manual tasks and team management at a complex environment and also assists engineers for maintaining high velocity and stability.

Some of the benefits provided by AWS are given below:

1) More programmable

2) Instant startup without installing.

3) Permits automation for efficiency.

4) Provide more security

5) No upfront fees and termination penalty


5) List out some popular tools for DevOps?

a) Ansible

b) Git

c) Jenkins

d) Donkers

e) Kubernates

f) Nagios

g) Raygon


6)  What are the benefits of continuous delivery on DevOps?

1) Raise the number of deliveries.

2) The risk of production failure decreases.

3) Diminish manual work.

4) Boost team confidence.

5) Enables the team member to automate entirely.

6) Permit rapid feedback.


7) What are the stages of DevOps

a) Planning

b) Coding

c) Building

d) Testing

e) Deploying

f) Operating 

g) Monitoring


 8) What is the role of vagrant in DevOps

Vagrant is the most impressive tool, used virtual box as the hypervisor for virtual environment and KVM management and in creating a testing environment. It is an open source tool permits the user to create a configuration file, user-friendly command line interface in less time and also improve wholly workflow of using puppet.


9) Is DevOps is beneficial to developers?

Yes, it allows monitoring, detecting, fixing a bug, implementing advanced features more quickly and also facilitates clear interaction among team members.


10) What is version control?

A software system permits a team of the organization for source code modification over time. It continuously traces code modification and keeps a record of it on a database. Moreover, it also examines errors and issues occur due to some modification.

a) Benefits of version control

b) Coordinating teams

c) Version tracking

d) Flexibility of work


11) What are the categories of version control?

a) Centralized

b) Distributed 


12) Explain "infrastructure as code" (IaC)?

'IaC' is managing the entire operation's Environment. The concepts used in IAC area most identical to other programming languages. In IaC, the advanced level  Automatic Script processes are used, which resembles foremost software design practices. To make code more versatile and adaptive visioning, Developers carefully designed control code version and make use of advanced featured source code for provision and management. IaC  infrastructure  can be easily and quickly implement Via IAC

a) Role of IaC 

b) IT infrastructure management

c) Up-to-date Infrastructure documentation

d) More reliability


13) List some of the domains where DevOps are implemented?

a) IT operations development 

b) During production feedback creation and its further development

c) Production development


14) Describe some of the DevOps benefits with a technical perspective?

a) Reduced complex problem occurrence.

b) Permits  fast problem-solving 

c) Lesson manpower

d) Continuous software delivery


15) List some of the MNC companies adapted DevOps for boosting performance?

Etsy, Google, and Amazon


16) Which scripting language plays a major part in DevOps development?

Python language


17) What is the significance of configuration management processes?

Configuration management refers to the entire items that required to be managed or configured for achievingany project successfully including trouble shooting, keeping continuous tracking and monitoring of project development. It is one of the best-automated methods for software maintenance permitting infrastructure scaling and efficiency improvement.


18) Mention some measuring parameters implemented for measuring the success of DevOps adapted across the organization?

a) Mean-Time-to-Change (MTTC)

b) Frequency of release

c) Mean-Time-to-Recovery (MTTR)


19) List some planning tools in DevOps?

JIRA, GIT


20) List some Building tools in DevOps?

a) Apache Maven

b) Rake

c) Make

d) CMake


21) What are the main aspects of DevOps?

a) Continuous monitoring

b) Configuration management

c) Source code management

d) Continuous integration


22) What do you mean by term Docker?

Docker is a tool resembles a container used for automating the deployment and run applications along with its components efficiently on a different environment.


23) What do you mean by Mem cache?

It is known as an extension that permits the user to work through handy procedural and object-oriented interfaces. It is developed as an objective of decreasing load of the database in dynamic web applications.


24) What do you mean by Mem cached in DevOps?

This extension makes use of the Mem cached library to facilitate API for Mem cached servers interaction and helpful in speed-up of the performance of dynamic web applications though caching objects and information in memory. It acts as the latest API. This memory-caching system has been used in many websites including YouTube, Facebook and many more.


25) How you can differentiate between DevSecOps and DevOps?

Security team members and integration of Security-related tools on SDLC are the two major differences found between DevSecOps and DevOps. 

DevOps
DevSecOps
Consists of the Technical Team and Operational Team 
With the technical and IT team, security members are working together for achieving the project.
Not given more preference for security
In this, the integration of security-related tools between SDLC phases for security testing Automation


26) What is Test Driven Development (TDD)?

Test Driven Development is one of the best practices helpful in fast iterations and repetitively integrations. Inthis, test cases act as the key during the development process and an outstanding testing methodology whichelegantly perform problem identification and risk management. 

Main advantages are illustrated below:

a) One can confidently do the Refactoring code

b) Accurate testing with test-case

c) Increase code flexibility 


27) What do you mean by Design Patterns?

It is the best practice applicable for developers for getting solutions to the problem. Design Patterns consist of specific standards terminologies helpful for both experienced and un-experienced developer to learn quickly. Design Patterns are categorized into three sections based on interaction, relationship, and addresses i.e. creational, structural and behavioral.


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