IBM C9510-401 Exam Questions Instant Access

Question 1

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?

AConfigure the CSIv2 outbound communications under RMI/IIOP security.

BConfigure the file-based repository and create the fileRegistry.xml file.

CEnable Java 2 security and configure the app.policy and was.policy files.

DUse the AdminTask deleteAuthorizationGroup to remove application access.

Answer : C

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/

Question 2

A system administrator has created a Jython script called globalScript.py.

What should the administrator do to ensure globalScript.py is loaded when the wsadmin shell is used?

ACompile globalScript.py to a Java class in the bin directory.

BInvoke wsadmin with the argument --profileName globalScript.py.

CModify the configureCustomProperty script to import globalScript.py.

DSet the script profiles in the wsadmin.properties file to load globalScript.py.

Answer : D

wsadmin.properties has this entry com.ibm.ws.scripting.profiles where we can add the scripting files to be loaded.

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

Question 3

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?

ACheck the System logs for OutOfMemoryErrors.Trigger a heap dump from the Integrated Solutions Console (ISC).Analyze the heap dump.

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

CConfigure Initial heap to be equal to the max heap.Trigger a heap dump from the Integrated Solutions Console (ISC).Analyze the heap dump.

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

Answer : B

Enabling verboseGC (Garbage Collection) output is often required when diagnosing issues with WebSphere Application Server. Because verboseGC data is critical to troubleshooting memory and performance problems and the overhead is generally very low, you may want to consider proactively enabling it in your environment.

References: http://www-01.ibm.com/support/docview.wss?uid=swg21114927

Question 4

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?

ANumber of requests, Java virtual memory, Average response time

BNumber of requests, Average response time, Web server thread pools

CAverage response time, Java virtual memory, Number of Live HTTP Sessions

DAverage response time, Web server thread pools, Number of Live HTTP Sessions

Answer : C

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 5

A system administrator is required to create a star topology for multi-cell performance management for three WebSphere Application Server cells.

How should the administrator configure the Application Placement Controller (APC) in a star topology?

Configure the cell custom property CenterCell to:

Afalse in all three WebSphere Application Server cells.

Bfalse in one WebSphere Application Server celltrue in the other two WebSphere Application Server cells.

Ctrue in all three WebSphere Application Server cells.

Dtrue in one WebSphere Application Server cellfalse in the other two WebSphere Application Server cells.

Answer : D

References:

Question 6

The application placement controller has been configured with elasticity mode enabled. Intermittently, all instances of a dynamic cluster are removed. After further review, the system administrator noticed that it occurs during peak load on another dynamic cluster.

The administrator wants to keep at least one instance available. Which configuration is needed in the dynamic clusters?

AEnable application lazy start with elasticity mode.

BSet the proactiveIdleStop custom property to true.

CSet the Number of instances to a value greater than zero.

DDisable the option ''If other dynamic clusters need resources, stop all instances of this cluster during periods of inactivity''.

Answer : D

It is not recommended to enable elasticity mode when the following option is set in the administrative console for one or more dynamic clusters:

If other dynamic clusters need resources, stop all instances of this cluster during periods of inactivity.

If you have elasticity mode enabled and the option set, the application placement controller can remove all of the custom nodes in the cell.

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

Question 7

A system administrator has created a Python script called globalScript. py.

What should the administrator do to ensure globalScript. py is loaded when the wsadmin shell is used?

ACompile globalScript.py to a Java class in the bin directory.

BInvoke wsadmin with the argument-profileName globalScript.py.

CModify the configureCustomProperty script to import globalScript. py.

DSet the script profiles in the wsadmin.properties file to load globalScript .py.

Answer : D

IBM WebSphere Application Server Network Deployment V8.5.5 and Liberty Profile C9510-401 Exam Questions