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IBM WebSphere Application Server Network Deployment V8.5.5 and Liberty Profile, System Administration

Question No: 41

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?

  1. An increased session timeout.

  2. A cluster of external HTTP servers.

  3. A load balancer to spread work between existing servers.

  4. A WebSphere extreme Scale HTTP session management.

Answer: D

Reference:http://websphere.sys-con.com/node/1299059

Question No: 42

A web application is hosted on an application server that receives HTTP requests from a third party application named myApp. The URlGroup mapping for this application is called

default_host_myApp.

The development team asks a system administrator to configure the HTTP plug-in to prevent routing requests to any application server except serverl.

The following exhibit shows the parts of the plugin-cfg.xml file that are relevant for myApp. The UriGroups for other applications are not shown in the exhibit.

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What should the administrator do to the plugin-cfg.xml file to ensure that requests for default_host_myApp URIGroup are routed only to machine1?

  1. Delete the server tag for Cloneld=quot;b20000002quot; Delete all of the tags within the Server tag

  2. Delete the UriGroup tag for default_host_myApp Delete all of the tags within this UriGroup tag

  3. Delete the VirtualHostGroup tag for default_host Delete all of the tags within the VirtualHostGroup tag

  4. Edit the LoadBalanceWeight forserverl to 20 Edit the LoadBalanceWeight for server2 to 2

Answer: C

Question No: 43

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?

  1. Enable Java 2 security for the cell.

    Create a security domain with application security enabled. Associate the security domain to the new application.

  2. 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,

  3. 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.

  4. 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.

Answer: C

Reference:http://www- 01.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/csec

_sec_multiple_domains.html?cp=SSAW57_8.5.5/1-8-2-33-1-0(See the Java 2 security).

Question No: 44

A system administrator wants to learn some of the Python scripting commands for the administration of the environment.

Which product feature should the administrator use?

  1. The wsadmin.properties file to load a profile.

  2. The AdminTask object to generate wsadmin scripts.

  3. The guided activities panel from the Integrated Solutions Console (ISC).

  4. The quot;Log command assistance commandsquot; option in the Integrated Solutions Console (ISC).

Answer: D

Question No: 45

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?

  1. Check the System logs for Out Of Memory Errors.

    Trigger a heap dump from the Integrated Solutions Console (ISC). Analyze the heap dump.

  2. Configure WebSphere Application Server to enable verbose garbage collection. Analyze the garbage collection cycles in the native logs.

  3. Configure Initial heap to be equal to the max heap.

    Trigger a heap dump from the Integrated Solutions Console (ISC). Analyze the heap dump.

  4. Configure WebSphere Application Server to increase max heap. Trigger a heap dump from the Integrated Solutions Console (ISC). Analyze the heap dump.

Answer: A Reference:http://www.ibm.com/developerworks/bpm/bpmjournal/1312_chan/1312_chan.ht ml

Question No: 46

A system administrator has configured a cluster containing 40 servers. The cluster members all belong to one core group. While examining the log files, the administrator notices that the core group coordinator is consuming abnormally high amounts of memory and CPU resources.

How can the system administrator reduce the memory and CPU resource usage of the core group coordinator?

  1. Configure a core group bridge.

  2. Configure a second active coordinator

  3. Decrease the memory on the machine.

  4. Move the coordinator to another machine.

Answer: A

Question No: 47

A system administrator has created a wsadmin script with several steps to install and configure an application and some resources in a WebSphere Application Server process. The script executed but the application was not installed successfully. The administrator suspects that the script has problems.

How can the administrator test and debug the script?

  1. In WebSphere Application Server Developer Tools for Eclipse, right click on the script file and select validate from context menu.

  2. Execute the script using the wsadmin with the option -conntype NONE and monitor the commandAssistancePythonCommands.log file.

  3. Use WebSphere Application Server Developer Tools for Eclipse in the debug perspective connected to the server and execute the script step by step.

  4. Run the script using wsadmin with these parameters:-lang Python -javaoption quot;-Xdebugquot; and then execute the log Viewer command with the option -listlnstances

Answer: C

Question No: 48

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?

  1. Enable administrative security.

  2. Configure a DMZ secure proxy.

  3. Configure High Performance Extensible Logging.

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

Answer: C

Question No: 49

A system administrator completed a WebSphere Application Server installation by using the Installation Manager. During installation, all defaults were selected for the installation root directories and the shared resources directory. Over time, the administrator has updated the installation with various interim fixes and fix packs. The administrator notices that the shared resources directory is very large in size and grows larger each time the Installation Manager is run.

How can the administrator decrease the size and remove some of the content from the shared resources directory?

  1. Manually delete content from the directory.

  2. During an update, create a new shared resources directory.

  3. Clear the Delete Saved Files option for the Installation Manager.

  4. Set the preserve Downloaded Artifacts preference to false.

Answer: D

Reference:http://www- 01.ibm.com/support/knowledgecenter/SSAW57_7.0.0/com.ibm.websphere.installation.soaf epnd.doc/info/ae/ae/tins_installfp_dist.html?lang=en(Shared resources directory)

Question No: 50

A system administrator has started a Liberty profile server using the default values. Later, the administrator modified the server.xml file for the server to include

lt;applicationMonitor updateTrigger=quot;polledquot; pollingRate=quot;100msquot; dropins=quot;S{server.config.dir}/applicationsquot; dropinsEnabled=quot;truequot;/gt;

The administrator placed the application ServletApp.war in the apps directory under

S{ server.config.dir}. While accessing the correct URL for the home page of the application, the

errorquot;Context Root Not Foundquot;occurs in the browser.

How can the administrator resolve this error?

  1. Restart the Liberty profile server.

  2. Install the ServletApp.war file using the Integrated Solutions Console (ISC).

  3. Place the ServletApp.war file in the directory named dropins under S {server.config.dir}.

  4. Place the ServletApp.war file in the directory named applications under S{server.config.dir}.

Answer: D

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