1. What is Jenkins primarily used for?
A. Configuration management
B. Continuous Integration and Continuous Delivery
C. Container orchestration
D. Cloud provisioning
Answer: B
2. Jenkins is written in which language?
A. Python
B. C++
C. Java
D. Go
Answer: C
3. What file defines a Jenkins pipeline?
A. Dockerfile
B. Jenkins.yml
C. Jenkinsfile
D. pipeline.xml
Answer: C
4. Which Jenkins pipeline type uses a predefined structure?
A. Scripted Pipeline
B. Declarative Pipeline
C. FreeStyle Pipeline
D. XML Pipeline
Answer: B
5. Which block is mandatory in a Declarative Pipeline?
A. steps
B. stages
C. pipeline
D. agent
Answer: C
6. What does a Jenkins agent do?
A. Stores plugins
B. Runs builds
C. Manages users
D. Controls UI
Answer: B
7. Which command starts Jenkins on Linux?
A. jenkins start
B. service jenkins start
C. start jenkins
D. systemctl run jenkins
Answer: B
8. Jenkins default web port is:
A. 80
B. 443
C. 8080
D. 9000
Answer: C
9. Which plugin is required for Git integration?
A. SCM Plugin
B. Git Plugin
C. GitHub UI Plugin
D. Source Plugin
Answer: B
10. What is a Jenkins Job?
A. A pipeline stage
B. A build trigger
C. A runnable task or project
D. A Jenkins plugin
Answer: C
11. What is a Jenkins workspace?
A. Jenkins UI
B. Directory where build runs
C. Plugin directory
D. Jenkins home
Answer: B
12. Where is Jenkins configuration stored?
A. /etc/jenkins
B. JENKINS_HOME
C. /var/log/jenkins
D. /opt/jenkins
Answer: B
13. Which syntax is used in Jenkinsfile?
A. XML
B. JSON
C. YAML
D. Groovy
Answer: D
14. What triggers a Jenkins build automatically?
A. Manual execution
B. Poll SCM
C. Webhook
D. All of the above
Answer: D
15. Which Jenkins job type is legacy but still used?
A. Pipeline
B. Multibranch
C. Freestyle
D. Matrix
Answer: C
16. What does SCM stand for?
A. Source Code Management
B. System Code Module
C. Software Control Model
D. Source Configuration Mode
Answer: A
17. Which plugin helps store secrets securely?
A. Vault Plugin
B. Credentials Plugin
C. Security Plugin
D. Password Plugin
Answer: B
18. What is the purpose of Jenkins stages?
A. Run jobs faster
B. Organize pipeline steps
C. Secure builds
D. Manage plugins
Answer: B
19. Which directive defines where a pipeline runs?
A. node
B. executor
C. agent
D. stage
Answer: C
20. What is Blue Ocean?
A. Jenkins security model
B. Jenkins UI for pipelines
C. Jenkins plugin manager
D. Jenkins agent
Answer: B
21. Which file stores Jenkins system logs?
A. config.xml
B. jenkins.log
C. system.log
D. console.log
Answer: B
22. Jenkins supports which operating systems?
A. Linux only
B. Windows only
C. macOS only
D. All major OS
Answer: D
23. What is a Multibranch Pipeline?
A. One pipeline with many stages
B. One pipeline per Git branch
C. Multiple Jenkins servers
D. Multiple agents
Answer: B
24. What happens if a stage fails?
A. Pipeline always continues
B. Pipeline stops by default
C. Jenkins restarts
D. Agent shuts down
Answer: B
25. Which keyword runs steps inside a stage?
A. run
B. execute
C. steps
D. commands
Answer: C
26. Jenkins pipelines are stored:
A. In Jenkins UI only
B. In Jenkins database
C. In source control
D. In Jenkins logs
Answer: C
27. Which plugin enables Docker builds?
A. Container Plugin
B. Docker Pipeline Plugin
C. Kubernetes Plugin
D. Build Plugin
Answer: B
28. What is the use of post block?
A. Define stages
B. Run actions after build
C. Trigger builds
D. Set agent
Answer: B
29. Jenkins credentials are encrypted using:
A. Plain text
B. Jenkins secret key
C. User password
D. Git key
Answer: B
30. What does CI stand for?
A. Continuous Integration
B. Continuous Improvement
C. Code Integration
D. Central Integration
Answer: A
31. What is a build executor?
A. Jenkins admin
B. Build process runner
C. Job scheduler
D. Plugin manager
Answer: B
32. Jenkins supports parallel execution using:
A. Threads
B. Executors
C. Stages
D. Parallel block
Answer: D
33. Which tool is commonly paired with Jenkins for containers?
A. Ansible
B. Terraform
C. Docker
D. Puppet
Answer: C
34. What command tests Jenkinsfile syntax?
A. jenkins test
B. pipeline check
C. Jenkins Linter
D. Groovy validate
Answer: C
35. What is the Jenkins home directory variable?
A. $JENKINS
B. $JENKINS_HOME
C. $HOME
D. $JENKINS_DIR
Answer: B
36. Jenkins agents can be:
A. Static only
B. Dynamic only
C. Both static and dynamic
D. None
Answer: C
37. Which plugin supports role-based access?
A. RBAC Plugin
B. Role Strategy Plugin
C. Security Matrix Plugin
D. Auth Plugin
Answer: B
38. Jenkins is licensed under:
A. MIT
B. Apache 2.0
C. GPL
D. BSD
Answer: B
39. What does checkout scm do?
A. Cleans workspace
B. Checks out source code
C. Runs tests
D. Builds artifacts
Answer: B
40. Jenkins supports which cloud?
A. AWS
B. Azure
C. GCP
D. All of the above
Answer: D
41. Which format is Jenkins configuration stored in?
A. JSON
B. YAML
C. XML
D. TXT
Answer: C
42. What is the purpose of build artifacts?
A. Store logs
B. Store output files
C. Store plugins
D. Store credentials
Answer: B
43. Which Jenkins view shows pipeline flow visually?
A. Classic UI
B. Blue Ocean
C. Grid View
D. Tree View
Answer: B
44. What happens when Jenkins master goes down?
A. Agents stop running
B. Builds continue normally
C. Only UI stops
D. Nothing
Answer: A
45. Which Jenkins feature allows job reuse?
A. Templates
B. Shared Libraries
C. Cloning
D. Pipelines
Answer: B
46. Jenkins can trigger builds using:
A. Cron
B. SCM polling
C. Webhooks
D. All of the above
Answer: D
47. What does CD stand for?
A. Code Deployment
B. Continuous Delivery
C. Continuous Development
D. Central Deployment
Answer: B
48. Jenkins supports which build tools?
A. Maven
B. Gradle
C. Ant
D. All of the above
Answer: D
49. Which command stops Jenkins?
A. jenkins stop
B. service jenkins stop
C. kill jenkins
D. systemctl kill jenkins
Answer: B
50. Jenkins best practice for pipelines is to:
A. Store in UI
B. Store in Jenkins home
C. Store in source control
D. Store locally
Answer: C
Conclusion.
Completing this Jenkins Certification Practice Quiz is a strong step toward mastering Jenkins and building confidence for certification exams and real-world DevOps work. These questions covered core areas such as Jenkins fundamentals, pipelines, agents, plugins, security, CI/CD concepts, and best practices all key topics tested in Jenkins certifications.
Regular practice with quizzes like this helps you:
- Identify knowledge gaps
- Reinforce Jenkins concepts and terminology
- Improve speed and accuracy for exams
- Gain confidence in designing and managing CI/CD pipelines
To get the most value, review the explanations behind each answer, practice writing Jenkinsfiles, and apply these concepts in hands-on projects. With consistent study and practical experience, you’ll be well prepared to succeed in the Jenkins Certification and in real DevOps environments.
Happy learning and good luck with your certification journey.
For a deeper understanding of Jenkins, refer to Jeevi’s page. This tutorial lays the foundation advance your DevOps skills through our complete learning program.
