IBM C9510-401 Online Practice Questions and Exam Preparation

IBM C9510-401 Online Questions & Answers

• Question 11:

  An EJB application posts a request message into a JMS destination and waits for a response message on a different JMS destination. To correlate the response message to the request message, the application uses the JMS correlationId of the message. The application waits up to five seconds for a response before timing out the request.

  A Message Driven Bean (MDB) running on a different cluster is responsible for consuming the request message, process it and post a response message.

  The destinations are defined in a Service Integration Bus (SIB) within the cell. Intermittent timeout exceptions have occurred for the requester application. How can a system administrator correlate and analyze the debug information from both requester and consumer applications?

  A. Enable High Performance Extensible Logging (HPEL).Use HPEL logViewer command to see debug information.
  B. Enable a diagnostic trace in both requester and consumer servers.Use the Integrated Solutions Console (ISC) to set the admin=all trace.Analyze the trace.
  C. Enable High Performance Extensible Logging (HPEL).Enable Cross Component Trace (XCT) to include request IDs in log and trace records.Use HPEL logViewer command with appropriate filters to see debug information.
  D. Using the Integrated Solutions Console (ISC), browse the request message that has timed out and look for any key application data.Search for exceptions using the key application data in both requester and consumer in native_stderr.log and native_stdout.log.
  C. Enable High Performance Extensible Logging (HPEL).Enable Cross Component Trace (XCT) to include request IDs in log and trace records.Use HPEL logViewer command with appropriate filters to see debug information.

  ---

  Cross Component Trace (XCT) annotates the logs so that log entries that are related to a request that is serviced by more than one thread, process, or even server are identified as belonging to the same unit of work. XCT helps identify the root cause of problems across components.

  References: WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile (July 2013), page 1091

• Question 12:

  A system administrator needs to install WebSphere Application Server Network Deployment V8.5.5 multiple times and would like to automate the task of installing the product. The administrator wants to create a response file based on an initial installation and use this for future installations.

  How can the administrator accomplish this task?

  A. Use the IBM Packaging Utility.
  B. Use the Installation Manager console mode.
  C. Complete a silent installation with the -log option.
  D. Start the Installation Manager GUI with the -record option.
  D. Start the Installation Manager GUI with the -record option.

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  Run the command to record a response file for the package installation. This command uses the -skipInstall argument, which records the installation commands without installing the Tivoli Monitoring packages.

  Substitute your own file name and location for the response file. Verify that the file paths that you enter exist. Installation Manager does not create directories for the response file:

  Windows: IBMIM -record -skipInstall Unix/Linux: ./IBMIM -record -skipInstall

  References:

  https://www.ibm.com/support/knowledgecenter/SS4EKN_7.2.0/com.ibm.itm.doc_6.3/install/ record_resp_file.htm

• Question 13:

  After collecting diagnostic trace from a server running under a cell, a system administrator noticed that the trace files contained sensitive information. To avoid this issue in the future, what can the administrator do?

  A. Configure entries in the ras.rawtracelist.properties.
  B. Configure suppressSensitiveTrace in the bootstrap.properties file.
  C. Clear the "Disable logging and tracing of potentially sensitive data" checkbox.
  D. Add the entry com.ibm.websphere.logging.RawTraceList=off to the end of the trace string.
  C. Clear the "Disable logging and tracing of potentially sensitive data" checkbox.

  ---

  You can either enable or disable the sensitive log and trace guard to help control whether loggers write sensitive information in your log and trace files. Use the administrative console to enable or disable the sensitive log and trace guard. Procedure

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

• Question 14:

  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:

  

  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.
  B. Restart the deployment manager.

  ---

  When nodes are added while LDAP security is enabled, the following exception is generated in the deployment manager System.out log under certain circumstances. If this happens, restart the deployment manager to resolve the problem.

  0000004d ORBRas E com.ibm.ws.security.orbssl.WSSSLClientSocketFactoryImpl createSSLSocket ProcessDiscovery : 0 JSSL0080E:

  javax.net.ssl.SSLHandshakeException The client and server could not negotiate the desired level of security. Reason?com.ibm.jsse2.util.h: No trusted certificate found

  References:

  https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.0.0/com.ibm.websphere.nd.doc/info/ae/ae/tagt_svr_conf_nodes.html

• Question 15:

  A system administrator is tasked with monitoring the overall health of the WebSphere environment to be able to tune the environment properly. Specifically, the administrator was asked to:

  Which PMI modules can the administrator examine to obtain this data?

  A. Number of requests, Java virtual memory, Average response time
  B. Number of requests, Average response time, Web server thread pools
  C. Average response time, Java virtual memory, Number of Live HTTP Sessions
  D. Average response time, Web server thread pools, Number of Live HTTP Sessions
  C. Average response time, Java virtual memory, Number of Live HTTP Sessions

  ---

  Monitoring overall system health. To monitor overall system health, monitor the following statistics at a minimum:

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

• Question 16:

  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
  C. SystemOut.log

  ---

  Problem(Abstract)

  The SystemOut.log contains a WSVR0605W message, also called a hung thread message. A javacore, or thread dump on Solaris and HP-UX, is needed in order to determine how to resolve the potentially hung threads.

  Cause

  WebSphere Application Server attempts to report potentially hung threads using the hung thread detector. Depending on how the hung thread detector policy is configured, a thread running for a certain interval (default 10 minutes) might be

  reported as hung and a WSVR0605W message is printed in the SystemOut.log file:

  WSVR0605W: Thread has been active for and may be hung. There are in total in the server that may be hung.

  References: https://www-01.ibm.com/support/docview.wss?uid=swg21448581

• Question 17:

  A system administrator needs to deploy a new enterprise application which requires that application security be enabled, but, the existing applications in the cell cannot be executed with application security enabled. The cell has the global security and Java 2 security disabled.

  How can the administrator handle this requirement?

  A. Enable Java 2 security for the cell.Create a security domain with application security enabled.Associate the security domain to the new application.
  B. Enable Java 2 security for the cell.Create a security domain with application security enabled.Associate the security domain to a new cluster to be used to deploy the new application.
  C. Enable administrative security for the cell.Create a security domain with application security enabled.Associate the security domain at the application level for the new application.
  D. Enable administrative security for the cell.Create a security domain with application security enabled.Associate the security domain to the new cluster where the new application is deployed.
  C. Enable administrative security for the cell.Create a security domain with application security enabled.Associate the security domain at the application level for the new application.

  ---

  When Java 2 security is enabled for a WebSphere Application Server, all the applications that run on WebSphere Application Server undergo a security check before accessing system resources. An application might need a was.policy file if it accesses resources that require more permissions than those granted in the default app.policy file

  References: https://www-01.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/tsec_ waspolicy.html

• Question 18:

  A system administrator wants to learn some of the Jython scripting commands for the administration of the environment. Which product feature should the administrator use?

  A. The wsadmin.properties file to load a profile.
  B. The AdminTask object to generate wsadmin scripts.
  C. The guided activities panel from the Integrated Solutions Console (ISC).
  D. The "Log command assistance commands" option in the Integrated Solutions Console (ISC).
  D. The "Log command assistance commands" option in the Integrated Solutions Console (ISC).

• Question 19:

  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.

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

  ---

  The High Performance Extensible Logging (HPEL) facility writes to the log and trace repositories in a binary format. You can view, query and filter the repository using the LogViewer command.

  logviewer.sh -monitor -includeLoggers Connection

  -monitor [integer]Specifies that you want the logViewer to continuously monitor the repository and output new log record entries as they are created. You can provide an optional integer argument after this parameter to specify how often you want the LogViewer tool to query the repository for new records. By default the logViewer queries the repository for new records every 5 seconds. When used with other filtering options, only those new records that match the filter criteria are displayed.

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

• Question 20:

  How can a system administrator secure a WebSphere Application Server environment to ensure that an application code will not be allowed to access any files in the server's file system?

  A. Configure the CSIv2 outbound communications under RMI/IIOP security.
  B. Configure the file-based repository and create the fileRegistry.xml file.
  C. Enable Java 2 security and configure the app.policy and was.policy files.
  D. Use the AdminTask deleteAuthorizationGroup to remove application access.
  C. Enable Java 2 security and configure the app.policy and was.policy files.

  ---

  When Java 2 security is enabled for a WebSphere Application Server, all the applications that run on WebSphere Application Server undergo a security check before accessing system resources. An application might need a was.policy file if it accesses resources that require more permissions than those granted in the default app.policy file

  References: http://www.aiotestking.com/ibm/how-can-a-system-administrator-secure-a- websphere-application-server-environment-to-ensure-that-an-application-code-will-not-be- allowed-to-access-any-files-in-the-servers-file-system/