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Exam Code: C9510-418
Exam Title: IBM WebSphere Application Server Network Deployment V9.0 Core Administration
Vendor: IBM
Exam Questions: 128
Last Updated: November 15th,2024

Question 1

Which tool can be used to collect data to be used for monitoring and tuning the environment?

A. Thread and Monitor Dump Analyzer
B. Performance Monitoring Infrastructure
C. IBM Tivoli Performance Viewer Advisor
D. Garbage Collection and Memory Visualizer

Correct Answer:B
WebSphere Application Server provides Performance Monitoring Infrastructure (PMI) data to help monitor the overall healthof the WebSphere Application Server environment. PMI provides average statistics on WebSphere Application Server resources, application resources, and system metrics. Many statistics are available in WebSphere Application Server, and you might want to understand the ones that most directly measure your site's resources to detect problems.
References:https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/tprf_monitoringhealth.html

Question 2

What does the following JVM argument do?
-Xverbosegclog:${SERVER_LOG_ROOT}/verbose.m%d.7/18/16M%S.%pid.txt,20,10000

A. It changes the default values for verbosegc logging.
B. It changes the default location of the verbosegc logging.
C. It configured verbosegc logging once it has already been enabled.
D. It sets the default value for enabling and configuring verbosegc logging.

Correct Answer:B
-Xverbosegclog[: <file> [,<X>,<Y>]]
Causes -verbose:gc output to be written to the specified file.
If it cannot create the file (for example, if an invalid filename is passed into the command), it will redirect the output to stderr.
If you specify and the -verbose:gc output is redirected to files, each containing GC cycles.
The dump agent tokens can be used in the filename. See Dump agent tokens for more information. If you do not specify , verbosegc.%Y%m%d.%H%M%S.%pid.txt is used. example: -Xverbosegclog:newgclogname.log,7,10000
References:http://www-01.ibm.com/support/docview.wss?uid=swg21384096

Question 3

What determines which On Demand Routers (ODRs) a Web server forwards requests to?

A. The default order in theODR_Module_Routing_Poilicy.xml.
B. The configuration scope determines which ODRs are included inhttpd.conf.
C. The configuration scope determines which ODRs are included inplugin-cfg.xml.
D. The configuration scope determines which ODRs are included inHTTPplugin-cfg.xml.

Correct Answer:C
In a topology with a web server which forwards requests to an on demand router (ODR), the ODR can be set to dynamically generate and update the web server plug-in configuration file plugin-cfg.xml. By configuring an ODR to dynamically update plugin- cfg.xml, you avoid manually updating the file during administrative actions, which can affect the content.
References:https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/twve_odr.html

Question 4

What must be done to delete one or more files from an application when using a partial application update?

A. Manually delete the files from the file system (on all nodes if clustered).
B. Supply the paths to the files that should be deleted in the administrative console.
C. Include a META-INF/ibm-partialapp-delete.props in the partial applicationupdate file.
D. Select the files that need to be deleted in the file selector section of the form for the partial application update.

Correct Answer:C
If you want to delete application files when you deploy a partial application update, you must first supply a special metadata file called META-INF/ibm-partialapp-delete.props in the partial application compressed file before you continue with the following procedure. Etc.
References:https://www.ibm.com/support/knowledgecenter/en/SSZLC2_8.0.0/com.ibm.commerce.developer.doc/tasks/tdpdeploying_j2ee_assets_partial.htm

Question 5

When creating a health policy, which condition should be selected to track requests that have a significantly decreased response time?

A. Workload
B. Age-based
C. Storm drain
D. Excessive response time

Correct Answer:C
The Storm drain condition tracks requests that have a significantly decreased response time.
References:https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/cwve_odhealth.html