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000-253 

WebSphere Application Server Network Deployment V6.1, Core Administration 

Exam number/code: 000-253

Exam name: WebSphere Application Server Network Deployment

V6.1, Core Administration

Questions & Answers: 184 Q&A

Related Certifications: Certified Specialist

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Question 1: When the application server is experiencing normal to heavy usage, which statement most

accurately describes optimal pool usage? A. The Performance Management Interface (PMI) must be explicitly enabled on theapplication server to be monitored, since it requires CPU resources on the server beingmonitoredB. The pools will all show similar numerical values, indicating balanced workload is occurringthroughout the application serverC. Pools used by the application should be released and rebuilt in conjunction with JVMgarbage collection cycles ensuring that no stale connections persistD. Pools used by the application should be nearly fully utilized, indicating that resources arebeing efficiently used Answer: D 

Question 2: Which statement is true for a managed application server process to startup? A. Starting a managed server is not dependent on the presence of a running deploymentmanagerB. The node agent should not be started before any managed servers on that nodeC. A node agent and deployment manager must be running before starting a managedserver

D. The deployment manager needs to be started before the managed server Answer: A 

Question 3: When using the administrative console to configure logging on a particular server, theDiagnostic Trace Service can be configured to write messaging to log files in one of threeformats. Which of the following are the supported formats? A. Basic, CBE, JRas

B. Basic, AdvancedC. Basic, Intermediate, AdvancedD. Basic, Advanced, Log Analyzer Answer: D 

Question 4: A system administrator wants to share system information like Workload Managementamong core groups. Which of the following statements is valid in this context? 

A. Core groups in same or different cells use the service integration bus to share WorkloadManagement information.B. Core groups can overlap by including common servers and the common servers are usedto share Workload Management information

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C. Core groups in different cells can only use the core group bridge service to shareWorkload Management informationD. Core groups use the core group bridge service to share Workload Managementinformation Answer: D 

Question 5: A system administrator is using the administrative console and accidentally closes thebrowser without saving any changes made during that session. What must the systemadministrator do to make sure any configuration changes that were made during the lastsession are not lost? A. Lo in as a different user and save the master repository.B. O and hand-edit the configuration xml files in the appropriate placesC. Restore a backup copy of the master configurationD. Make those changes permanent when the system administrator logs in again. 

Answer: D 

Question 6: Sometimes it is required to force an application to create a thread dump (or javacore). Whichof the following processes would be used to force a thread dump? A. Using the wsadmin command prompt, get a handle to the problem application server.---------------------------------------------------------------------------------------------wsadmin>setjvm[$AdminControl completeObjectName type=JVM,process=server1.*]------------------

wsadmin>$AdminControl invoke$jvm dumpAllThreadsLook for an output file in the installation root directory with a name like javacore.date.time.id.txt.B. Using the wsadmin command prompt, geta handle to the problem application server.---------------------------------------------------------------------------------------------wsadmin>set jvm[$AdminControl completeObjectNametype=JVM,process=server1,*]Generate the thread dump:---------------------wsadmin>$AdminControl invoke $jvm dumpAppServerThreadsLook for an output file in the installation root directory with a name like javacore.date.time.id.txt.

C. Using the wsadmin command prompt, geta handle to the problem application server.---------------------------------------------------------------------------------------------wsadmin>set jvm[$AdminControl completeObjectNametype=JVM,process=server1,*]Generate the thread dump:---------------------wsadmin>$AdminControl invoke $jvm dumpJVMThreadsLook for an output file in the installation root directory with a name like javacore.date.time.id.txt.D. Using the wsadmin command prompt, geta handle to the problem application server.---------------------------------------------------------------------------------------------wsadmin>set jvm[$AdminControl completeObjectNametype=JVM,process=server1,*]

Generate the thread dump:---------------------wsadmin>$AdminControl invoke $jvm dumpThreadsLook for an output file in the installation root directory with a name like javacore.date.time.id.txt.

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Answer: D 

Question 7: What are three goals of the Virtual Member Manager (VMM)? A. Provide a repository-independent programming interface

B. Provide the ability for users to achieve a single view of their own multiple repositories in afederated modelC. Provide a cache of repository informationD. Provide a repository that can span multipleWebSphere cellsE. Support various pluggable repositories Answer: A,B,E 

Question 8: For performance reasons, a J2EE application maintains HTTP session information inmemory (not persisted). The information in the session can be recreated based on thecontents of various cookies. Recreating this data from the cookies would incur performancepenalties. Which mechanism minimizes the need to recreate session data? A. Database persistenceB. Memory-to-Memory replication in both client and server modeC. Memory-to-memory replication in server modeD. Session affinity in web server plug-in Answer: D 

Question 9: A secured network is being set up between an external Web server and the applicationserver's embedded web server. Given that mutual SSL authentication is a required part ofthe process, which of the following configuration steps needs to be selected? A. SERVER AUTHENTICATION ONLYB. Both Server and Client authenticationC. Cluster authenticationD. Client authentication only Answer: D

 

Question 10: A J2EE application needs to be configured as follows: The EJB module and the utility JAR in the application must be loaded by the same classloader. Web Module WAR1 and the EJB module must use the same Class loader and webmodule WAR2 must have its own class loader. What is the correct Web Module class loader configuration for this application? A. WAR1 - Module, WAR2 - ApplicationB. WAR1 - Application, WAR2 - ModuleC. WAR1 - Application, WAR2 - ApplicationD. WAR1 - Module, WAR2 - Module

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Answer: B 

Question 11: How can an administrator view the contents of the activity.log file in the profile rootdirectory? 

A. Run thewaslogbr script from the command line and use the Log analyzerB. Open the file using any text editorC. Use the profiling and Logging perspective in the Application Server Toolkit (AST)D. Open the file using the IBM Support Assistant (ISA) and use the Thread Analyzer tool Answer: C 

Question 12: A system administrator is asked to diagnose a problem on a remote node using the LogAnalyzer. In order to accomplish this task, what is the name of the Log Analyzer source logfile that the system administrator will have to access? A. service.logB. activity.logC. loganalyzer.logD. trace.log Answer: B 

Question 13:

 When the HTTP plug-in configuration file is regenerated either manually or automatically thefile must be propagated to the Web servers. If a system administrator needs to configureautomatic propagation of the plugin-cfg.xml file for an Apache HTTP server, which of thefollowing tasks must be performed? A. Enable session management for the HTTP serverB. Configure the HTTP server on a managed node.C. Automatic propagation is not supported, the plugin-cfg.xml file must be transferredmanuallyD. Set the automatic propagation flag in the pluin-cfg.xml file. Answer: B

 

Question 14: An administrator has a cluster of two members and needs to ensure that roughly twice asmany client requests are routed to cluster member A than are routed to cluster member B.How should the administrator configure this type of load distribution? A. Double the OS priority for member As JVM processB. Double the minimum size of member As Web container thread poolC. Assign to member A, a weight two times as large as member Bs weightD. Create two entries for member A in the HTTP plug-in configuration Answer: C 

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 Question 15: In order to create a new WebSphere cell and implement a horizontal scaling topology, anadministrator needs to perform which task(s)? A. Federate nodes and create cluster members across multiple machinesB. Deploy multiple database servers using a high availability product

C. Federate nodes and create multiple clustersD. Load balance multiple HTTP servers using Edge Components Answer: A 

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