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W A S A r c h i v e

▼ 2012 (43)

► Dec (1)

▼ Nov (20)

PLUG-IN PARAMETERS

COGNIZANT INTERVIEWQUESTIONS

DESCRIPTION OF KILL COMMAN

DMZ (DEMILITARIZED ZONE)

 ABBREVIATIONS IN WAS

WAS INTERVIEW PART-4QUESTIONS AND ANSWERS

FIRE WALL

SSL (SECURED SOCKET LAYER

SSH (SECURE SHELL)

TICKETING TOOL IN WAS

TROUBLE SHOOTING IN WAS

UNIX COMMANDS

IBM WAS INTERVIEW ANSWERS

W e b S p h e r e A p p l i c a t i o n S e r v e r I n t e r v i e w Q u e s t i o n s a n d D o c u m e n t s

A v a i l a b l e H e r e

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6) What is the Impact for Federated profile Servers If the DMGR is down ?

A) No Impact on Serve rs and Applications

7) What is the Configuration file (or) Heart of IHS ?

A) httpd.conf file

8) If Application is giving Very Slow Response the n how will improve ?

A) -----> Check Conne ction Pool Settings.

  -----> Change Accordingly if require d.

  ------> JVM Me mory Settings

  ------> Change Accordingly if required

  ------> Check Database if it is giving Slow Response.

  ------> Check any Connection are waiting or not Closing.

  -----> Check CPU Utilization , JVM Utilization

9) If You got Internal Error then what is the solution for it ?

A) -----> Check IHS is running or not.

  -----> If it is running check the AppServe r is running or not.

  -----> This is basically due to request is reaching to IHS and not able to reach

Application.

10) If you are trying to start WAS and you are ge tting "Class not found " exce ption

then how to solve this issue ?

A) ------> Check Web Sphere classpath and set it properly if not set.

  -----> Check Systemout and Systemerr logs for any specific errors or warning to

identify which class is not found when Starting the Server. 

DEFINITIONS IN WAS

PMI(PERFORMANCEMONITORINGINFRASTRUCTURE)

BASICS OF NETWORKDEPLOYMENT

GLOBAL SECURITY

WAS VERSIONS,EAR,WAR,JARFILES IN WAS

PLUGIN AND TRACE

FIXPACK AND REFRESH PACKHOT DEPLOYMENT

SWAM,LTPA,SSO

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 P o p u l a r P o s t s

TICKETING TOOL IN WAS

  TICKETING TOOL IN WAS Def oTicketing Tool : It is a software whichprovides solutions for the tickets ----> .

(no title)Tell me about yourself ? A) Goodmorning/Afternoon to everybody. Its mpleasure to introduce Myself Starting wmy name. My ...

WAS INTERVIEW PART-2 QUESTIONS AND ANSWERS

  WAS INTERVIEW PART-2QUESTIONS AND ANSWERS 1) whatare the different components in WilyIntroscope ? A) 1) Collecto...

TROUBLE SHOOTING IN WAS

  TROUBLE SHOOTING IN WAS --

> When we got any issue in WAS wehave to trouble shoot that issue ----->Suppose Page ...

WAS INTERVIEW PART-4 QUESTIONS AND ANSWERS

  WAS INTERVIEW PART-4QUESTIONS AND ANSWERS 1) Whaare logs in IHS (IBM HTTP SERVER) ?

 A) Access.log , Error.log 2...

COGNIZANT INTERVIEW QUESTIONS

  COGNIZANT INTERVIEWQUESTIONS 1) Tell me about Yourse? 2) What is JDBC ? How you canconfigure JDBC ? 3) What is SSL...

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11) What are AppServe r Components ?

A) 1) Admin Serv er 

  2) Web Container 

  3) EJB Container 

  4) J2C Service (JAVA 2 CONNECTOR )

  5) Me ssaging Engine

  6) Security Serve r.

12) What is Serve r ?

A) ----> Serv er provides runtime Environment for your Web Applications or 

Enterprise Applications.

-----> Serve r receives user reque st , process that reque st and response will

generated to End Users.

13) Can you know other Connect ion Pool in WAS other than JDBC Connection Pool

 ?

A) 1) J2C Connection Pool (JAVA 2 CONNECTOR POOL )

  2) MQ Connection Pool (Messaging Queue)

  3) Thread Pool

14) Differe nt Types of Session TimeOut can be set ?

A)  1) Application leve l

 

2) Web Module leve l

  3) Server level 

15) How do you verify that you are using Horizontal clusters not a vertical cluster?

A) ----->  if u have all the servers in same machine(Host) ,than its vertical ,if cluster 

servers are installed in different machine than its horizontal.

  -OR-

  -----> Go to WAS console => select Nodes in le ft side => in the right side of the

console you can see how many nodes make's your CELL, and also the host-name of 

the boxes in which the node exists.

WAS INTERVIEW PART-3 QUESTIONS AND ANSWERS

  WAS INTERVIEW PART-3QUESTIONS AND ANSWERS 1) Whatthe default admin console port numberwebsphere? A) WebSphere Appl...

REAL TIME ISSUES IN WAS

  REAL TIME ISSUES IN WASforgot web-sphere adminconsole password ----> When you

enable the security on WebSpher...

SYNCHRONIZATION

  SYNCHRONIZATION Q) What athe different types of synchronizationsavailable ? Explain which type if better and any disadva...

SSL (SECURED SOCKET LAYER)

  SSL (SECURED SOCKET LAYER) -> It is a Protocol to provide Securedcommunication. --- -> Protocol meansfollow rules an...

 A b o u t m e

KARIM ULLA

VIEW MY COMPLETE

PROFILE

W e b S e r v V s A p p S e r v

The main responsibility of Webserver isto serve static requestwhile Appserver used for dynamic request.Moreover,Webserver handle http requests andalso acts like a load balancer while

 Appserver has large area of works likesecurity, performances, clustering,support for variousfiles(.ear,.war)deployments etc

W e b S p h e r e F o l l o w e r s

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------> if you see all the node s from different host-names the n its Horizontal

clustering if you see same host-name here the n its Vertical clustering

16) What kind of security mode you are using or JDBC connection?

A) J2C AUTHENTICATION.

17) Can u configure multpile apache webservers?

A) we can configure in httpd.conf file.

18) How do you apply a FIX PACK ?

A) - Stop all the JVM/Node/DMGR on which you are going to apply fixpack

  - first check and update the update installer 

  - Place the .pak files in maintenance folder of updateinstaller directory

  - create the response files

  - run ./update.sh -silent -options”path-to-responsefile”

  - check the ve rsioninfo from the WAS bin directory

19) If nodeagent is stopped, can you perform the sync ?

A) ----> In adminconsole Answer is No

  ------> if we are doing syncnode by command mode then Nodeagent should be

stopped.

20) one of the cluster member (jvm) is having issues. To troubleshoot the

issue, you decided to take it out of the cluster. How do you do that?

A) Make its runtime weight to 0

21) In a complex environment, there are 10 machines. Machine A is having

8GB RAM and machine B having 2GB of RAM. The administrator decided to

send twice as many request as machineB to machineA. How can he achive it?

A) give machineA twice the weight as machineB

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W h a t i sW e b S p h e r e

It is provides run-time url for the end-user. It is easier for client to build,deploy,manage dynamic website WASprovides Authentication andauthorization to secure applications

 A b o u t W e b s p h e r e

WebSphere is a middle waretechnologies, It's more Secure andReliable. Developed by pure J2EEapplications

C r i c k e t L i v e S c o r e

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22)  After making some changes on a cluster, it is required to recycle/restart all

the cluster JVMs. The lead admin told you to make sure that there should not

be any downtime during this recycle. Which option do you use to achieve it?

A) Ripple start

23) A large application which has 5web modules has been deployed on to a

cluster. After some months, the developer asked you to update on of the5web modules. How do you do it?

A) RollOut

24) can you change the cluster name, once it was created

A) No

25) WHEN APPLICATION IS DOWN WHAT U WILL DO?

A) ----> First look at the logs for errors. If you find the error, save the logs and

start your application. Then start trouble shoot.

  -----> If no error found, run a trace and look for FFDC etc.

26) I HAVE 16GB RAM,WHAT IS THE MINIMUM & MAXIMUM HEAPSIZE ?

A) No relation. Heap settings should be made depends on application

27) What is the most important step to do, if you change your user repository.

A) recycle all the JVMs. otherwise the key tokens will not be updated for the

new repository

28) When can you enable global security?

A) ----> While Installing

  -----> After Installation also

29) What is the default user registry, if you enable Global Security at the time

of installation

A) Its federated repositories actually it is a file

30)  can we use different SSL for nodes and plugin ?

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A) Yes.

31) What is the command to start and stop the httpserver?

A)  ./apachectl -k stop/start

32) What is a keystore?

 A)  A keystore is a database that contains private keys with their associated

certificates. The keystore will be used for encrypting/signing some thing with

 your private key 

33)  What is root certificate?

 A) ----> Root certificate is either an unsigned public key certificate or a self-

signed certificate that identifies the Root Certificate Authority (CA).

-----> Digital certificates are verified using a chain of trust. The trust anchor

for the digital certificate is the Root Certificate Authority (CA).

----->  A root certificate is the top-most certificate of the tree, the private key 

of which is used to "sign" other certificates. All certificates immediately below 

the root certificate inherit the trustworthiness of the root certificate.

----> Intermediate certificate is a subordinate certificate issued by the trusted

root specifically to issue end-entity server certificates. The result is a

certificate chain that begins at the trusted root CA, through the intermediate

and ending with the SSL certificate issued to you. Such certificates are called

chained root certificates

----> Creating certificates directly from the CA root certificate increases the

risk of root certificate compromise, and if the CA root certificate is

compromised, the entire trust infrastructure built by the SSL provider will

fail. The usage of intermediate certificates for issuing SSL certificates to end

entities, therefore, provides an added level of security.

34) What is the Default Server in WAS for Application Server profile ?

 A) Server1

Poste d by Karim Ulla at 09:20

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