Exam
: IBM 000-341
Title
: WebSphere Application Server V5.0, Multiplatform Administration
Version :
R6.1
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1. Upon monitoring an application it is found that the passivation and activation counters for EJBs are extremely high. What is the BEST change to be made to the server configuration to improve EJB subsystem performance? A. Increase the JVM heap size B. Increase the EJB cache size C. Increase the EJB cache cleanup interval D. Increase the maximum ORB service connector cache size Answer: B 2. A Web application is suspected to have a (concurrent access) synchronization problem. Which PMI modules should be monitored to try and isolate the performance problem? A. Dynamic cache B. J2C connectors C. Web applications D. JVM runtime E. Web container thread pools Answer: CE 3. A high volume application in a clustered environment uses only local sessions. Occasionally a request having session affinity is routed to an alternative application server. This happens even when the application server with affinity does not fail. What is the most likely contributing factor? A. The session time-out value is set too high B. The session cache size is configured to be too small. C. The web container thread pool for the application is too small on each server. D. It is the nature of session affinity with local only sessions. Answer: C 4. What should an administrator guarantee too ensure that the following command performs as expected when run on the deployment manager node? backupConfig cellBackup-nostop A. All application code must be present on the deployment manager node. B. No configuration changes should be made while the command executes. C. The command should be preceded by a syncNode Command from the deployment manager node. D. The file cellBackup does not already exist. Answer: B 5. Concurrent access to HttpSession objects is possible in a certain application. The BEST approach for the system administrator to make this behavior safe involves: A. Checking the ???Allow serial access??à session management property for the installed enterprise application.
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B. Checking the ???Allow serial access??à session management property for the application server on which the application is installed. C. Checking the ???Allow overflow??à session management property for the installed enterprise application. D. Having the developer mark all application methods that access the session as synchronized. Answer: A 6. An enterprise application has an execution profile where 50% of the HTTP requests hit the EJB layer. Which pair of application server settings best fit this application profile? |. Maximum web container thread pool size =25 ||. Maximum web container thread pool size = 50 |||. Maximum ORB service thread pool size = 25 |V. Maximum ORB service thread pool size = 50 V. Maximum EJB cache size = 25 V|. Maximum EJB cache size = 50 A. | and |V B. | and ||| C. || and ||| D. || and V E. ||| and V| Answer: C 7. Which of the following manual tasks may need to be carried out before distributing plugin-cfg.xml to web server machines? A. Edit plugin-cfg.xml Virtual Host names to coincide with the virtual host names defined within the corresponding web server. B. Edit plugin-cfg.xml absolute file paths to reflect the web server?? local filesystem. C. Generate the keyring and stashfile if using SSL between the plug-in and application servers. D. Update the domain suffix for each virtual host in plugin-cfg.xml. Answer: BC 8. During a stress test on an application, it was found that there was a large number of prepared statement discards associated with one Datasource. All other metrics were within expected range. The BEST way to increase performance of this application is to make what change to the Datasource properties? A. Increase the statement cache size. B. Increase the minimum connections. C. Increase the maximum connections. D. Change the purge policy to ???Entire Pool??à.
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Answer: A 9. An application server is closing HTTP connections prematurely. Assuming that MaxKepAliveConnections is already set at 90% of the maximum number of threads in the Web container thread pool, what Web container setting should be modified to improve this situation? A. Set the MaxKeepAliveRequests property to a sufficient value. B. Set the MaxKeepAliveConnections property to a sufficient value. C. Increase the Web container thread pool maximum size. D. Increase the ORB service thread pool maximum size. Answer: A 10. What would be the practical considerations for creating multiple smaller application servers each running one different web application rather than a single large application server for an application architecture? A. The aggregated plug-in config file will contain less complex URIs. B. Multiple smaller servers provide better application isolation. C. There will be a decrease in response time due to interprocess RMI/IIOP calls. D. Multiple smaller servers eliminate single points of failure. Answer: B 11. In which topologies would an administrator configure the use of LTPA (Lightweight Third Party Authentication) with the Local OS user registry? A. Single node configured with multiple application servers. B. A configuration in which multiple authentication mechanisms are used for a security domain. C. Distributed environment which shares a domain user registry. D. Multiple nodes configured with multiple clusters. Answer: AC 12. In a typical Web application request/response information flow, which WebSphere Application Server V5.0 component can initially encrypt the request? A. Web container??s embedded HTTP server B. Web server plug-in C. EJS Server D. Web browser E. Application server Answer: B 13. When federating a node into a cell how would an administrator add an application installed on that node into the cell? A. Use the addNode utility without the ?§CincludeApps option and install the application on the node.
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B. Use the addNode utility without the ?§CsyncNode option and copy the application binaries to the node. C. Use the addNode utility with the ?§CincludeApps options and configure the synchronization options on Admin Console. D. Use the addNode utility with the ?§CsyncNode option and copy the application binaries to the node. Answer: C 14. What is affected in a topology which splits the Web and EJB containers so that they run in separate application servers, each in a different machine? A. The elimination of network latency due to JVM optimizations B. The elimination of a single point of failure C. Performance improvement due to greater number of inter-process calls D. Increased maintenance costs due to additional machines 15. In a Network Deployment environment, what are the consequences of a node agent failure? A. Application server cannot be started, using the admin console, until the node agent is restarted. B. The local configuration may not broadcast changes to the mater configuration. C. The deployment manager??s file transfer service is made unavailable to all node agents in the cell. D. The administrative console is made unavailable. E. The local configuration may not reflect the master configuration. Answer: AE 16. What should be considered when comparing the horizontal scaling of an application server (clustering) versus creating multiple stand-alone (Base) servers on multiple machines? A. File synchronization will occur in the clustered environment. B. Multiple stand-alone servers on multiple machines provide failover support. C. The HTTP server plug-in distributes requests in multiple stand-alone server environments. D. The HTTP server plug-in distributes requests in a clustered environment. E. Multiple stand-alone servers on multiple machines can be easily combined into the horizontally scaled environment. Answer: AD 17. Where can an administrator locate configuration data for a standalone WebSphere Application Server V5.0 installation? A. Administrative Repository on the database server B. Master configuration repository on the cell configuration repository on the deployment manager C. Configuration repository on the local machine D. Cloudscape database on the local machine Answer: C 18. Which of the following is a reason why a configured binding would be necessary?
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A. Allow federation of CORBA name spaces to the node??s name space B. Bind DataStore JNDI names explicitly at the node name server level C. Configure an alias for a JNDI name in the system??s partition of the name space D. Provide interoperability with IBM WebSphere Application Server V4 clients Answer: D 19. An administrator has created a Version 5 data source, and has selected the option to use this data source in container managed persistence. Which of the following CANNOT use this data source? A. JDBC applications and servlet 2.3 components B. CMP EJB 1.x beans with a J2EE 1.3 deployment descriptor C. CMP EJB 1. x beans with a J2EE 1.2 deployment descriptor D. CMP EJB 2.0 beans E. BMP EJB 2.0 Beans Answer: C 20. If a CMP bean uses a J2C resource adapter to access a backend data store, which of the following should be configured? A. CMP Connection Factory B. Database connection pool C. CMP Resource Environment Provider D. User-defined JDBC Provider Answer: A 21. Development passes an administrator an EAR file to be installed for testing. What steps could be performed with the Application Assembly Tool prior to installing the enterprise application that might expose issues within the application code or the application packaging? A. Use the AAT ???Verify????à option to validate the enterprise application. B. Open individual modules and search for broken bindings. C. Examine individual class files for errors. D. Select JSP??s and click ???Pre-compile??à. E. Generate EJB code for deployment. Answer: AE 22. A new EJB has been added to a JAR file that is part of an enterprise application. What is the BET way to incorporate this new EJB JAR file into the server(s) running the application while minimizing the time the application is unavailable and ensuring configuration control? A. Copy the JAR file with the new EJB into the Repository directory of the Deployment Manager node and wait for the next File Synchronization interval. B. Locate the EAR directory in the installedApps directory of all the nodes where the application runs and
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use the EarExpander tool to overwrite it with the updated EAR file. C. Add the JAR with the new EJB to the original EAR file and use the Update feature in the administrative console or the AdminConfig MBean. D. Locate all copies of the JAR file under the installedApps directory of all the nodes where the application runs and replace it with the updated JAR. Answer: C 23. In which of the following instances would an administrator NOT select the Generate Default Binding checkbox when installing an enterprise application via the administrative console? A. The administrator want to explicitly control the global JNDI names of one or more EJB modules. B. The administrator has a single data source and needs more than one global data source. C. The administrator must map resource references to global resource JNDI names that are different from the java: comp/env name. D. The administrator needs to map a resource authorization of a connection factory to a specific JNDI name. E. The administrator needs to specify the default virtual host name for the enterprise application. Answer: AC 24. The Application Client Resource Configuration Tool is most typically used to: A. Set user GUI resource preferences. B. Generate a special application client EAR file from the source J2EE .EAR file. C. Alter various resource provider properties in the J2EE .EAR files specific to a particular client deployment. D. Configure the communication protocol to be used by the J2EE Client application. Answer: C 25. Where can J2EE Security roles be defined? A. was.policy B. ibm-web-ext.xmi C. web.xml D. ibm-ejb-ext.xmi E. ejb-jar.xml Answer: CE 26. Which partition in an IBM WebSphere Application Server V5.0 federated name space is used to store information about EJB bindings and JNDI names? A. The Server persistent partition B. The Node persistent partition C. The Cell persistent partition
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D. The Transient partition Answer: D 27. An administrator considers turning Diagnostic Tracing on to investigate a problem, but she is concerned about decreased performance. The configuration has several clusters, but the problem application runs in just one cluster. Which of the following approaches can reduce the trace overhead? A. Turn tracing on in all servers in the application??s cluster. B. Turn tracing on in just one server in the application??s cluster. C. Set a larger trace file size. D. Set trace to output to a memory buffer. E. Set the trace level to TERSE. Answer: BD 28. An administrator of an IBM WebSphere Application Server V5.0 installation needs to examine the activity.log file on one of the nodes. She only has telnet connectivity to the computer where the log exists. How can she examine this log file? A. Use a text editor and then examine the log. B. Use the Log Analyzer tool. C. Run the showlog script while redirecting the output to a file, then use a text editor. D. FTP the activity log to a local machine and then use the Log Analyzer tool. Answer: C 29. Most requests to a newly deployed application operate correctly. One JSP is supposed to display a list of products. Instead, the web browser reports a failure. An administrator suspects that the JSP did not compile. To investigate the problem she should check the: A. trace.log file for the application server. B. SystemErr.log file. C. Native_stdout.log file. D. http_plugin.log file. Answer: B 30. The purpose of using the Collector Tool is to collect: A. information for examination by the Log Analyzer tool. B. debug information for problem determination by the administrator. C. server environment information for problem determination by IBM Support. D. information about running applications for performance tuning. Answer: C 31. What is the LOWEST level of granularity of the Trace Service supported in an IBM WebSphere Application Server V5.0 Network Deployment installation?
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A. Server B. Node C. Cell D. Cluster Answer: A 32. A system administrator needs to examine the JVM logs for several running servers in an IBM WebSphere Application Server, V5.0 Network Deployment installation. Some of nodes are located off-site. What is the BEST way for that administrator to access these logs? A. Ask the local administrators to email the logs for each node involved. B. Use the correct URL for each server to open the WebSphere administrative console. C. View the logs for each running server from the Network Deployment administrative console. D. Telnet to each machine and then open the logs in an editor window. Answer: C 33. An administrator needs to verify that the cell level configured binding for the name space are set correctly. What dumpnamespace command line parameter will MOST effectively produce output specific only to these changes? A. ?§Cport 2809 B. ?§CstartAt persistent C. ?§Chost dmgr D. ?§Creport long Answer: B 34. Which of the following protocols can be configured to communicate between a Web server and IBM WebSphere Application Server V5.0? A. SOAP B. HTTP C. SNMP D. HTTPS E. RMI/IIOP Answer: BD 35. Which of the following are reasons for an administrator to elect in-memory replication over using a database as the session persistence mechanism? A. Cost of maintaining a production database. B. Limited memory available on node machines. C. Differences in processor utilization when serializing for database persistence and memory persistence. D. Necessity of the persistence store to survive a power outage.
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