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Q17. A web application was deployed on a WebSphere Application Server cluster. While users are using the application, one of the cluster servers fails and the users lose their working data.
What can the system administrator configure to ensure users can continue to work if one of the cluster servers fails?
A. An increased session timeout.
B. A cluster of external HTTP servers.
C. A load balancer to spread work between existing servers.
D. A WebSphere extreme Scale HTTP session management.
Answer: D
Explanation: Reference: http://websphere.sys-con.com/node/1299059
Q18. A developer created an enterprise application which contained data source and security role information. The developer asked a system administrator to install this application to an application server where global security is enabled using the Integrated Solutions Console (ISC). A new data source was configured at the server scope for the use of this application. While load testing the application, the developer noticed that the attributes configured on the new data source were ignored by the application server.
How can the administrator ensure that the attributes configured on the new data source are used by the application server?
A. Create the data source under cell scope instead of server scope.
B. Delete any data source of the same name defined under node, cluster or cell scope.
C. Reinstall the application and clear the Process embedded configuration check box.
D. Correct the component-managed and container-managed authentication aliases set on the data source.
Answer: D
Q19. A system administrator has configured a network deployment cell containing multiple nodes and global security enabled with an LDAP repository. To increase capacity, the administrator needs to add additional nodes to the cell. After adding the nodes by using both scripts and the Integrated Solutions Console (ISC), the administrator examines the System.out log for the deployment manager and notices the following message:
0000004d ORBRas E com.ibm.ws.security.orbssl.WSSSLClientSocketFactoryImpl Create SSL Socket Process Discovery : 0 JSSL0080E:
javax.net.ssl.SSL Handshake Exception -
The client and server could not negotiate the desired level of security. Reason? com.ibm.jsse2.util.h: No trusted certificate found
How can the administrator resolve this problem?
A. Disable Java 2 security.
B. Restart the deployment manager.
C. Increase the RSA token timeout value.
D. Change the number of active LTPA keys.
Answer: B
Explanation: Reference: ftp://public.dhe.ibm.com/software/webserver/appserv/library/v70/BOS7B100.pdf (page 20, see the note)
Q20. An application deployed to a multi-node cluster is reported to have slowness and hung threads. A system administrator is asked to review the logs on each node and identify if the hung threads are a false alarm.
How can the administrator determine that the hung threads are a false alarm? Analyze the:
A. ffdc logs.
B. SystemErr.log.
C. SystemOut.log.
D. Native_stderr.log.
Answer: C
Explanation: http://www- 01.ibm.com/support/knowledgecenter/ssw_i5_54/rzatz/trbhangdet.htm (See the False Alarm).
Q21. The installation of WebSphere Application Server did not complete successfully, and a system administrator needs to troubleshoot the installation.
What can the administrator do to identify the cause of the installation failure?
A. Run the installer command with the appropriate command line options.
B. Check the files under the Agent data location of IBM Installation Manager.
C. Check the files under the logs directory of IBM Installation Manager installation directory.
D. Check the log.txt under <WebSphere Application Server install directory><log directory>.
Answer: D
Q22. A system administrator is required to monitor the application server logs for heap memory issues and determine if the heap memory usage is reaching close to 70% of the maximum heap. The application server is configured with an initial heap of 256 MB and a max heap of 1 GB.
How should the administrator determine if the application server is utilizing 70% of the max allocated heap memory?
A. Check the System logs for Out Of Memory Errors.
Trigger a heap dump from the Integrated Solutions Console (ISC). Analyze the heap dump.
B. Configure WebSphere Application Server to enable verbose garbage collection. Analyze the garbage collection cycles in the native logs.
C. Configure Initial heap to be equal to the max heap.
Trigger a heap dump from the Integrated Solutions Console (ISC). Analyze the heap dump.
D. Configure WebSphere Application Server to increase max heap. Trigger a heap dump from the Integrated Solutions Console (ISC). Analyze the heap dump.
Answer: A
Explanation: Reference: http://www.ibm.com/developerworks/bpm/bpmjournal/1312_chan/1312_chan.html
Q23. A system administrator has been asked to uninstall an application from a cluster running in a WebSphere Application Server Network Deployment cell. This application was installed from the Integrated Solutions Console (ISC). The monitored directory for the cluster is
<cluster1_dir>.
What step(s) can the administrator perform to uninstall the application?
A. Delete the application file from <cluster1_dir>.
B. Stop the running cluster.
Delete the application file from <cluster1_dir>.
C. Stop the running cluster.
Copy the application file to <cluster1_dir>. Delete the application file from <cluster1_dir>.
D. Create a properties file to describe the deletion of the application file Copy the properties file to <cluster1_dir>.
Answer: A
Q24. A system administrator has created a Python script that will run in WebSphere Network cell where administrative security is enabled. This script is named doUpdate.py and will be run by using the following:
wsadmin -connType RMI -f doUpdate.py
How can the administrator suppress a user/password prompt from appearing when this script is run?
Set the user and password in the:
A. sas.client.props file.
B. ssl.client.props file.
C. soap.client.props file.
D. wsadmin.properties file.
Answer: D