CI / CD concepts

Question 1

What is Continuous Integration?

Answer 1

CI is a software development practice where members of a team integrate their work frequently.

Question 2

What are benefits of CI ?

Answer 2

1. Streamline the process from development to deployment
2. Detect and fix bugs faster
3. Helps deliver the code to production in an efficient and faster way
4. Reduce risk by providing faster feedback

Question 3

What is continuous delivery?

Answer 3

A software development discipline where software is built so that it can be released to production at any time.

Question 4

Difference between CI and CD ?

Answer 4

CI is just the practice of integrating code continuously.

CD is the ability to release at any time.

Question 5

Continuous delivery vs Continuous deployment ?

Answer 5

Cont. Delivery - code can be released at any time

Cont. Deployment - Code is released continuously as a part of the pipeline.

Question 6

What is Jenkins written in?

Answer 6

Java

Question 7

What was Jenkins previously called?

Answer 7

Hudson

Question 8

The easiest way to run Jenkins for the first time?

Answer 8

Java web start

Question 9

How to start jenkins from command line?

Answer 9

java -jar jenkins.war

Question 10

What is the default port for Jenkins?

Answer 10

8080

Question 11

Where do we do all the configurations in Jenkins?

Answer 11

Manage Jenkins

Question 12

What is the path of JDK stored?

Answer 12

Configure System

JAVA_HOME

Question 13

Where to setup email notification?

Answer 13

Configure System

“Email Notification” Section

Question 14

Tabs in Manage plugins section?

Answer 14

Update
available
installed
advanced

Question 15

what is build Job?

Answer 15

A task or step in the build process.

Question 16

What are the types of Jobs/Projects?

Answer 16

Freestyle Project
Maven Project
External Job
MultiConfiguration Project

Question 17

What is external Job and what is the use?

Answer 17

This is a type of Job that allows you to record the execution of a process run outside Jenkins, even on a remote machine. This is designed so that we can use Jenkins as a dashboard of our existing automation system.

Question 18

What are multi-configuration projects?

Answer 18

Suitable for projects that need a large number of different configurations.

Question 19

what syntax does Jenkins schedule use?

Answer 19

Cron syntax

Question 20

Define fields of cron syntax?

Answer 20

there are five fields of cron syntax separated by white spaces

1. minute (0-59)
2. hour (0-23)
3. day of the month (1-31)
4. month (1-12)
5. day of the week (0-7)

Question 21

Where does maven store the test reports?

Answer 21

when maven runs unit test it automatically generates the XML test report in dir called surefire-reports in the target directory.

Question 22

What is a build?

Answer 22

The result of one run of the job.

Question 23

What are build steps?

Answer 23

Single operation within the build.

Question 24

what are Artifacts ?

Answer 24

output of a build.