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C9510-401 Exam Questions - Online Test


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Q1. A system administrator has added a server cluster as a member of a service integration bus (SIB). The administrator needs to configure one messaging engine for each server in this cluster and to have a failover location for each messaging engine.

What should the administrator do to achieve the required design?

A. Configure a new messaging engine in each server to support failover.

B. Configure the data store for each messaging engine for each server in the cluster.

C. Select scalability with high availability as the messaging engine policy.

D. Create a core group policy to restrict each messaging engine to a particular server.

Answer: C

Explanation: The scalability with high availability configuration ensures that there is a messaging engine for each server in a cluster, and that each messaging engine has a failover location.

Reference: http://www-

01.ibm.com/support/knowledgecenter/SSCKBL_8.5.5/com.ibm.websphere.nd.doc/ae/cjt1004_.html (second paragraph)

Q2. A WebSphere Application Server cell was configured with a deployment manager node and a custom node. An operator manually changed some configuration files in the custom node, and the node became out of synch with the master repository.

The system administrator used the Synchronize button in the system administration session of the Integrated Solutions Console (ISC) to try to resynchronize the node, but the node remained out of sync.

What should the administrator do to fix it?

A. Use the Full Resynchronize button.

B. Invoke "sync" operation on NodeSync MBean.

C. Recreate the custom profile with the same name without deleting the node.

D. Manually copy all the deployment manager configuration files to the custom node.

Answer: A

Explanation: Reference: https://books.google.com.pk/books?id=oLq6AgAAQBAJ&pg=PA30&lpg=PA30&dq=Use+the+Full+Resynchronize+button&source=bl&ots=rdUMDel7n0&sig=YeWe8vnPOUZtxtD7DZP8IZdMF1Y&hl=en&sa=X&ei=manTVK-2KIXVau6lgrgG&ved=0CCEQ6AEwAQ#v=onepage&q=Use%20the%20Full%20Resynchronize%20button&f=false

Q3. A system administrator was asked by the development team to inform them of any warning message which contains a string "Connection" on a WebSphere Application Server with High Performance Extensible Logging (HPEL) enabled.

What should the administrator do to continuously monitor logs for the required message?

A. Configure log detail levels to include filter on "Connection" string.

B. Use the Log Viewer in the administrative console with filter on "Connection" string.

C. Use the logviewer.sh or logviewer.bat command with appropriate options.

D. Use the Log Viewer in the administrative console with filter on "Connection" string and enable the 'Refresh automatically' feature.

Answer: C

Explanation: Reference: http://www-01.ibm.com/support/knowledgecenter/SSD28V_8.5.5/com.ibm.websphere.base.doc/ae/rtrb_logviewer.html

Q4. A system administrator has to design a new production environment to host a web application. The workload of this web application is expected to increase during special marketing campaigns.

Which one of the following topologies should the administrator configure to address the requirements for this new environment?

A. A Liberty collective environment with autonomic managers and on demand router (ODR).

B. A flexible management environment supported by one admin agent running in each node of the cell.

C. A dynamic cluster with autonomic managers, application placement controller and intelligent routers.

D. A heterogeneous cell with enough servers to support the peak load spread across multiple nodes on the same machine.

Answer: C

Q5. 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)

Q6. While monitoring a cluster in the cell, the administrator notices that one server in the cluster periodically loses connections to the database. When this happens, requests to the server have a significantly decreased response time and various error conditions are listed in the log files for the server. Since the error codes are returned quickly, the server starts returning responses faster than the average service times for the application. Due to this,

the weight for the server is increased and a large percentage of incoming requests are being routed to the erroneous server and the server is getting overloaded with requests.

How can the administrator detect these conditions in the future and take action to prevent this problem?

A. Configure the storm drain health policy.

B. Configure the on demand router (ODR) transport chain to tune inbound connections.

C. Monitor the JVM heap usage to determine a new server weight.

D. Enable the PMI Extended statistic set and use the Connection Pool summary report.

Answer: D

Q7. A new cell contains a cluster with members defined in two managed nodes running on two different machines. The cell also contains two unmanaged nodes running on HTTP servers with HTTP plug-in. Session persistence has been enabled.

Which additional component(s) can the system administrator configure to make this environment highly available?

A. Enable administrative security.

B. Configure a DMZ secure proxy.

C. Configure High Performance Extensible Logging.

D. Configure primary and backup load balancers for the HTTP servers.

Answer: C

Q8. 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).

Q9. An application contains a web services client and the application is deployed and running. A system administrator has to add a response timeout to the deployed web services client, so the call fails in a timely fashion.

Which artifact should the administrator use?

A. web.xml

B. was-webservices-sca.xml

C. ibm-webservices-bnd.xmi

D. ibm-webservicesclient-bnd.xmi

Answer: C

Explanation: Reference: http://www-01.ibm.com/support/knowledgecenter/SSEQTP_7.0.0/com.ibm.websphere.nd.doc/info/ae/ae/twbs_atkdd2.html

Q10. 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