Most Frequently Asked Interview Question and Answer for WebSphere Application Server administration..

1. Default bootstrap port?

Ans: 2809

2. How to hit application without hitting the web server?

Ans: webcontainer port on application server

3. In how many ways you can perform administration?

Ans: console,,,JMX

4. No of ways of doing deployments?

Ans: Admin console…..jython (jacl) scripts

5. What is CellDiscoveryAddress

Ans: Node uses this port to talk to DMGR

6. What is NodeDiscoveryAddress

Ans: DMGR uses this port to talk to node

7. How websphere discovers a change in JSP and compiles it?

Ans: There is an algorithm that websphere uses to find the timestamp of .jsp and .class files. It checks that timestamp of .class file is always later than its corresponding .jsp file.

8. What is classloader?

Ans: The Java Classloader is a part of the Java Runtime Environment that dynamically loads Java classes into the Java Virtual Machine

9. how do you specify a jar file to be used by the application, consider that you have many jar files in your system?

Ans: classloader

10. What is a managed node?

Ans: Node with NodeAgent

11. What is a managed webserver?

Ans: Remote webserver access through local (dmgr/cell)

12.  What is the default user registry, if you enable Global Security at the time of installation
ans: Its federated repositories…. actually it is a file

13.  Which commands require username/password , if you enable admin security
ans: all stop* , syncNode, addNode(?)

14. When can you enable global security?
ans:– while installing,– After installation also

15.   Does enabling admin security needs j2ee security to be enabled?
ans : No

16.  Does enabling admin security enables j2ee security?
ans: yes

17.  What is the most important step to do, if you change your user repository.
ans: recycle all the JVMs. otherwise the key tokens will not be updated for the new repo

18. who can change admin security settings?
ans:- Adminstrator

19.  what is the tool supplied by IBM for SSL management in Websphere
ans: ikeyman

20.  How do you change the cell wide SSL?

ans: http://www-01.ibm.com/support/docview.wss?rs=180&uid=swg21154255

21. how do you replace the default plugin-key.kdb file with new kdb file?

can we use diffrent SSL for nodes and plugin ?
ans:-Yes

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