Java EE - Interview Questions and Answers for 'Deployment' | Search Interview Question

Java EE - Interview Questions and Answers for 'Deployment' - 7 question(s) found - Order By Newest

Frequently asked. Among first few questions in the J2EE segment of interview.

Q1. What is deployment descriptor ?

or

What is the use of deployment descriptor ?

Ans. Deployment Descriptor which is usually web.xml is used to specify the classes, resources and configuration of the application and how the web server uses them to serve web requests.This file is usually added to WEB-INF folder and contains following

* Servlet entries and url mapping
* Plugins
* Some info regarding authentication / filters
* Landing Page
* Event Handlers

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Q2. Which of the following file is called deployment descriptor ?

a. application.xml
b. project.xml
c. web.xml
d. build.xml

Java EE

Ans. web.xml

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Q3. Which of the following is usually not part of EAR file ?

a. Server Configuration files
b. HTML and Media Files
c. Application Configuration files
d. Class files

Ans. Server Configuration files

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Q4. What is Hot Deployment ?

Server

Ans. It is the ability to deploy changes on the fly without need to first build , deploy and then restart. All these functions happens on the fly as soon as the changes are made to the code.

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Q5. Difference between Hot and Cold Deployment ?

Server

Ans. Cold Deployment is a conventional deployment mechanism that follows the multi step process to deploy code changes to the running app i.e Build -> Deploy - Restart.

whereas

Hot Deployment is deployment changes on the fly without need to first build , deploy and then restart. All these functions happens on the fly as soon as the changes are made to the code.

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Q6. Is there any relationship between Web.xml and Spring.xml ?

Spring

Ans. No, there is no relationship between web.xml and spring.xml but you have to configure spring.xml in web.xml in order initialize beans when application starts up

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Q7. What is the difference between filter and filter-mappings xml tag within deployment descriptor ?

Java EE

Ans. filter tag speficies the filter name and respective class for handling filter action whereas filter mapping maps the filter to the url patterns ( specifying the url that needs to be intercepted )

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Q8. Which of the following file is called deployment descriptor ?

Java EE

a. application.xml

b. web.xml

c. config.xml

d. web-application.xml

Ans.b. web.xml

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