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IBM WebSphere Application Server Network Deployment V9.0 Core Administration

Question No: 31

An administrator installed an enterprise application in fast mode and noticed that the application is failing because J2EE roles have not been mapped.

How can this issue be resolved?

  1. Re-deploy the application.

  2. Request that the application developer create an enhanced .ear file which has roles mapped, and deploy the enhanced .ear file.

  3. Map a security role to the user/group for the application using the Integrated Solutions Console, save changes, and restart the application.

  4. Map a security role to the user runAs roles for the application using the Integrated Solutions Console, save changes, and restart the application.

Answer: C Explanation:

WSRR defines J2EE roles that must be mapped to user or group principals. This can be done by using the WebSphere Administration Console

References:https://www.ibm.com/support/knowledgecenter/en/SSWLGF_8.5.6/com.ibm.sr. doc/twsr_configrn_userroles08.html

Question No: 32

An administrator is using the Guided Troubleshooter in the IBM Support Assistant to troubleshoot IBM WebSphere Application Server issues. After going through data collection and analysis, no reliable solution is found.

What is the administrator’s best next step?

  1. Call ina new PMR with IBM and upload Troubleshooter data to ECuREP.

  2. Open a new PMR with IBM and upload SystemOut.log from the IBM WebSphere Application Server.

  3. Submit results to the IBM WebSphere Application Server forum for a quick response from other forum users.

  4. Use the Guided Troubleshooter to open a service request with IBM, so all the troubleshooting data analyzed so far is uploaded automatically.

Answer: D

Question No: 33

What is a benefit of using the IBM Extended Cache Monitor?

  1. It invalidates cacheids.

  2. It displays the contents of the cache instances.

  3. It displays the contents of object cache instances.

  4. It displays the dependency ids of the cache instances.

Answer: C Explanation:

The IBM Extended Cache Monitor for IBM WebSphere Application Server provides you with two functions that are not available with the cache monitor that is supplied with WebSphere Application Server. These two functions enable you to:

display the contents of object cache instances

display the Dynamic Cache mbean statistics for cache instances

References:https://www.ibm.com/developerworks/websphere/downloads/cache_monitor.ht ml

Question No: 34

When verbose Garbage Collection is enabled, in which file(s) does the operating system collect the data?

  1. trace.log

  2. activity.log

  3. SystemOut.logandSystemErr.log

  4. native_stdout.logandnative_stderr.log

Answer: D Explanation:

Depending on the operating system in use, the verboseGC output will be written to the following file by default:

AIX, Linux, or Windows: native_stderr.log Solaris or HP-UX native_stdout.log

References:http://www-01.ibm.com/support/docview.wss?uid=swg21114927

Question No: 35

An administrator configures an IBM DB2data source at cell scope. The environment variable DB2UNIVERSAL_JDBC_DRIVER_PATH is configured at cluster scope. The data source test connection on one node succeeds, but fails on the other node with java.lang.ClassNotFoundException:com.ibm.db2.jcc.DB2ConnectionPoolDataSource.

Which of the below is the likely cause for the exception?

  1. The data source is configured at cell scope.

  2. Multiple driver JARs are installed on the second node.

  3. DB2UNIVERSAL_JDBC_DRIVER_PATH is configured at cluster scope.

  4. A different version of the JDBC driver JAR does not exist on the second node.

Answer: C Explanation:

Check that the variable is correctly defined at the scope where the JDBCProvider/DataSource is defined.

Note: At runtime, WebSphere Application Server invokes a physical data source by resolving the appropriate variable at a level where one of thefollowing criteria exists: The scope of the variable can contain the data source configuration; that is, the variable

has the larger scope.

The variable and the data source have identical scopes.

Application Server meets these conditions by attempting to resolve the variable at each level of the scope spectrum. That is, the product tries to resolve the variable in the server scope, then the cluster scope, then the node scope, and lastly the cell scope.

References:https://www.ibm.com/support/knowledgecenter/SSAW57_8.0.0/com.ibm.websp here.nd.doc/info/ae/ae/cdat_testcon.html

Question No: 36

An administrator notices a sudden increase in the user load that causes resource contention on the database server.

What preventive measure can the administrator take to avoid database outage?

  1. Enable surge protection.

  2. Configure Stuck connection.

  3. Reduce connection pool size.

  4. Reduce WebContainer Thread pool size.

Answer: C Explanation:

Maximum Connection Pool Size

When determining the maximum size of the database connection pool, consider the following issues:

The total number of connections that the WebSphere Commerce cluster can open to the database should not overwhelm yourdatabase.

References:http://www-01.ibm.com/support/docview.wss?uid=swg21358336

Question No: 37

Which type of profile provides management capabilities for multiple stand-alone application servers?

  1. Custom

  2. Secure Proxy

  3. Administrative agent

  4. Deployment manager

Answer: C Explanation:

You can use the following different configurations of the application server to combine the plug-in configuration files of multiple application server profiles into a single output file:

  • Using multiple stand-alone base application server profiles with an administrative agent using the job manager. The job manager function is a part of WebSphere Application Server Network Deployment. However, you can use the job manager function with stand- alone, base application server profiles. Usethis topic to complete this configuration.

  • Etc.

    References: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd. doc/ae/twsv_configsimplelbadminagentjobmgr.html

    Question No: 38

    Through what protocol can a Java client directly access EJBs running on an application server?

    1. JDBC

    2. RMI/IIOP

    3. SOAP/JMS

    4. SOAP/HTTP

    Answer: D

    Explanation:

    Provided that it uses the correct protocols (SOAP, HTTP, WSDL), any web service client can access a stateless session bean, whether ornot the client is written in the Java programming language. The client doesn’t even 鈥渒now鈥?what technology implements the service: stateless session bean, JAX-WS, or some other technology. In addition, enterprise beans and web components can be clients ofweb services. This flexibility enables you to integrate Java EE applications with web services.

    References:http://docs.oracle.com/javaee/6/tutorial/doc/gipjf.html

    Question No: 39

    An administrator would like to uninstall an instance of a multiple instance installation via response file.

    How does the administrator ensure that the correct instance is uninstalled?

    1. All the features must be listed.

    2. The profile ID must point to the correct instance.

    3. The offering IDmust point to the correct instance.

    4. The repository location must point to the correct instance.

    Answer: D Explanation:

    References:https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.we bsphere.installation.nd.doc/ae/cins_WASv85_nd_modify_Win32.html

    Question No: 40

    When adding a repository to a federated repository configuration, which type of repository can be added only using wsadmin commands?

    1. File repository

    2. LDAP repository

    3. SAML repository

    4. Database repository

    Answer: D Explanation: Federated repositories

    Supports multiple types ofrepositories such as file-based, LDAP, database, and custom. In WebSphere Application Server Version 8.5, file-based and LDAP repositories are supported by the administrative console. For database and custom repositories, you can use the wsadmin command-line interface or the configuration application programming interfaces (API).

    References: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd. doc/ae/cwim_fedrepos.html

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