Hello and welcome to our comprehensive DevOps MCQ blog post, designed to put your knowledge of DevOps fundamentals to the test! Are you a newbie intrigued by the DevOps world? Or perhaps you’re a seasoned professional looking to brush up on the basics? Either way, you’ve landed in the right place.
This blog post consists of over 20 multiple-choice questions that cover key concepts of DevOps, from the foundational principles to the myriad of tools used in a typical DevOps pipeline. Each question is followed by its correct answer and a succinct explanation that not only justifies the answer but also provides additional context or trivia.
1. What does 'DevOps' stand for?
Answer:
Explanation:
DevOps combines "Development" and "Operations", emphasizing collaboration between developers and IT operations teams.
2. Which tool is commonly used for Continuous Integration and Continuous Deployment (CI/CD)?
Answer:
Explanation:
Jenkins is a widely-used open-source tool that facilitates both Continuous Integration and Continuous Deployment.
3. What does CI in CI/CD stand for?
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Explanation:
CI stands for Continuous Integration, a practice where developers integrate code into a shared repository frequently.
4. Which of the following is NOT a configuration management tool?
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Explanation:
While Chef, Puppet, and Ansible are configuration management tools, Jira is an issue and project tracking tool.
5. What is Docker primarily used for?
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Explanation:
Docker is primarily known for creating, deploying, and running applications in containers.
6. What's the primary purpose of Kubernetes?
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Explanation:
Kubernetes is a platform designed to manage containerized workloads and services.
7. Which tool is mainly used for version control in DevOps?
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Explanation:
Git is a distributed version control system commonly used in the DevOps world.
8. What does IaC stand for in DevOps?
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Explanation:
IaC or Infrastructure as Code is a method to provision and manage IT infrastructure through code and automation.
9. Which of the following is a benefit of implementing DevOps?
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Explanation:
DevOps practices like CI/CD allow for quicker detection and recovery from errors, reducing downtime.
10. In DevOps, what does "shift left" refer to?
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Explanation:
"Shift left" emphasizes incorporating testing and other operations earlier in the software development process.
11. Which of the following represents a cultural aspect of DevOps?
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Explanation:
While tools and automation play a role in DevOps, its foundation lies in fostering a culture of collaboration and transparency between development and operations teams.
12. What is Infrastructure as Code (IaC)?
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Explanation:
Infrastructure as Code (IaC) involves managing and provisioning infrastructure through machine-readable definition files, automating the process.
13. In which phase are automated tests primarily run in a CI/CD pipeline?
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Explanation:
In a CI/CD pipeline, once the code is built (compiled and packaged), it moves to the testing phase, where automated tests are executed.
14. What does the acronym "CALMS" stand for in the context of DevOps?
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Explanation:
CALMS represents the five pillars of DevOps – Culture, Automation, Lean, Measurement, and Sharing.
15. Which tool is used for configuration management?
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Explanation:
Ansible is a popular tool for configuration management, automating tasks such as software configuration and deployment.
16. Which practice involves deploying code into a production-like environment before actual production?
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Blue-Green Deployment involves two parallel environments – Blue (current production) and Green (clone of production). New code is deployed to the Green environment and, once tested and verified, traffic is switched to it.
17. What is a Version Control System (VCS) primarily used for?
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Explanation:
A VCS like Git allows developers to track and manage changes to source code, facilitating collaboration and version management.
18. Which tool is often used for orchestrating cloud infrastructure as code?
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Explanation:
Terraform is a widely-used tool for defining and providing cloud infrastructure using a declarative configuration language. It enables Infrastructure as Code (IaC) practices for cloud resources.
19. Which term describes a method where developers merge their changes back to the main branch multiple times a day?
Answer:
Explanation:
Continuous Integration (CI) is a DevOps practice where developers integrate code into a shared repository several times a day. It encourages more frequent code integrations and testing.
20. Which of the following tools is primarily associated with monitoring and visualizing time-series data?
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Explanation:
Grafana is an open-source platform for monitoring and observability. It's commonly used to visualize metrics from time-series databases.
21. What does the term "Immutable Infrastructure" refer to?
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Explanation:
Immutable Infrastructure refers to an approach where once infrastructure components are deployed, they are never modified. Instead, if changes are needed, new instances are created to replace the old ones.
22. Which DevOps practice involves automating the provisioning and management of servers?
Answer:
Explanation:
Configuration Management involves the use of tools and practices to automate the provisioning and management of servers, ensuring that they maintain the desired state over time.
23. Which DevOps tool is known for its "Infrastructure as Code" capabilities and agentless architecture?
Answer:
Explanation:
Ansible is known for its Infrastructure as Code capabilities, allowing automation of cloud provisioning, configuration management, and application deployments. It operates on an agentless architecture, communicating via SSH or WinRM.