IBM WebSphere Application Server Interview Questions You'll Most Likely Be Asked

By Vibrant Publishers

• 226 IBM WebSphere Application Server Interview Questions
• 78 HR Interview Questions 
• Real life scenario based questions
• Strategies to respond to interview questions
• 2 Aptitude Tests

IBM W

• Language: English
• Publisher: Vibrant Publishers
• Release date: Aug 20, 2018
• ISBN: 9781946383594

Book preview

IBM WebSphere Application Server Interview Questions

You'll Most Likely Be Asked

Job Interview Questions Series

www.vibrantpublishers.com

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IBM WebSphere Application Server Interview Questions You'll Most Likely Be Asked

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Table of Contents

1. Installation

2. Administration

3. WAS and Java

4. WebSphere on Other OS

5. WAS and Data Server

6. WAS and HTPP Sessions

7. WAS Security

8. WAS Deployment

9. WAS 7 and 8

10. Problem Determination

11. Scripting and Automation

12. Performance Tuning

13. Miscellaneous

HR Interview Questions

INDEX

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IBM WebSphere Application Server

Interview Questions

Review these typical interview questions and think about how you would answer them. Read the answers listed; you will find best possible answers along with strategies and suggestions.

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Installation

1: Explain what’s new in IBM Installation Manager V8.

Answer:

Find below the list of latest competences:

a) You can now install and uninstall the product using the same kit

b) iFixes and fix-packs can be updated and even rolled back

c) Feature packs can be installed and uninstalled

d) Perform individual operations with GUI. Record the response files from GUI or create using the right XML file for installation in stealth mode.

e) Involve multiple operations in silent mode

2: You have already installed WAS 8. Now, can you check in .nifregistry for the installed servers?

Answer:

You cannot check! It is not using ‘.nifregistry’registry file anymore.

3: Is WebSphere Application Server V5 allowed over system i in remote mode?

Answer:

WebSphere Application Server Version 5 does not have a GUI interface. So, it’s not possible.

4: What causes abrupt stoppage of WebSphere Application Server installation over system i without creating a log file?

Answer:

The installation could stop abruptly without creating a log file if the hostname is not defined.

5: What can go wrong with profile creation?

Answer:

If you include any special characters in the local host name, the profile may not be created. Special characters are usually not supported as host name.

6: What happens when the application server is installed on a platform where it has already been installed?

Answer:

The application server will be installed in unattended mode when installing it on a platform where it was already installed before.

7: Can you install application server 8 using IIM on system i?

Answer:

IIM cannot be used to install application server 8 over system i. You need the QShell command line for the same.

8: Can you schedule IIM instance installation for system z for a certain time after working hours?

Answer:

Yes, this can be done by submitting the installation job in batch mode.

9: Consider a scenario where an administrator had unsuccessful installation of WAS and he wants to reinstall it, what shall he do to get more information during next installation about the cause of the unsuccessful installation?

Answer:

Reinstall WAS with tracing turned on.

10: How to make sure that your application server’s installation was successful?

Answer:

The success of application server’s installation can be ensured by using Installation Verification tool.

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Administration

11: Under which circumstances does WebSphere application contact the Registry server for user information?

Answer:

The WebSphere application will contact the registry server when:

a) a user checks the password while logging in

b) checking or relating a certificate against the user id

c) checking for group information

d) converting a userid to uniqueid

12: Explain Extended deployment.

Answer:

WebSphere Extended deployment consists of three suites - the WebSphere Virtual Enterprise, WebSphere eXtreme Scale and Computer Grid. All these, put together, will enhance the service quality by ensuring optimized IT resources.

13: Explain the purpose of wsadmin objects in detail.

Answer:

wsadmin consists mainly of five objects that let you deploy an application, create and configure environments, control the servers and extract more information on other objects.

a) AdminApp lets you deploy an application

b) AdminTask is used to create a new environment or delete an existing one

c) AdminConfig lets you change an existing environment

d) AdminControl is used to start or stop servers

e) Help is used to extract more information on all wsadmin objects

14: Explain DMGR in WebSphere Application Server.

Answer:

DMGR, the deployment manager is an administrative tool. When we create a DMGR, a node, cell and admin console are created. It is mainly used to administer the application. It does not require a server and need not be installed. Once the DMGR is created, it lets you create server from the admin console.

15: How do you disable security in WebSphere?

Answer:

To disable security in WebSphere, you have to execute the securityoff in wsadmin and restart the DMGR. Another way to do this is by changing the security.xml file in the server’s node. Change the first enable setting to false and restart the instances to disable security.

16: Explain how you can take a backup while the server is running.

Answer:

You can take a backup of the running server by executing backupConfig.sh -nostop command from the DMGR bin. The backupConfig.sh takes the backup while nostop implies without stopping the server. You can also move to the root of WAS and execute backupConfig.bat -nostop to take a backup without stopping the server.

17: Explain fix pack.

Answer: