IBM C9510-401 Exam Practice Test Instant Access

Question 1

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 2

A system administrator runs a Jython script that creates and configures several servers and realize that the script fails before completing. Although many tasks succeeded, they are rolled back when the script fails.

Before running the script again, what can the administrator add to the script after each task so the completed tasks are committed even if other tasks fail?

AAdminApp.update()

BAdminConfig.save()

CAdminControl.invoke(server, 'sync')

DAdminTask.backupJobManager('server')

Answer : B

AdminConfig.save()to save changes after script execution.

Question 3

A system administrator discovers an issue that requires a change to a federated server. In this cell, WebSphere administrative security is enabled, but application security is not enabled.

How should the administrator make this change?

The administrator should use:

Aa web browser to connect to the node agent https port.

Ba web browser to connect to the deployment manager admin_host port.

Cthe job manager to submit a job to update the unmanaged server.

Dan ssh connection to the node and modify the client_types.xml file.

Answer : B

The admin_host virtual host is used for access to the WebSphere administrative console.

At installation time, the host is configured to match requests on the wc_adminhost and wc_adminhost_secure ports for the stand-alone server or deployment manager.

References: WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile (July 2013), page 303

Question 4

Which one of the following options describes the runtime flow starting from the client browser in a clustered WebSphere Application Server Network Deployment topology?

AHTTP server -> job manager -> admin agent -> HTTP server plug-in

BLoad balancer -> HTTP server -> HTTP server plug-in -> application server

CApplication server -> node agent -> deployment manager -> load balancer

DDeployment manager -> node agent -> HTTP server plug-in -> HTTP server

Answer : B

Question 5

A system administrator has created a Python script that will run in WebSphere Network cell where administrative security is enabled. This script is named doUpdate.py and will be run by using the following:

wsadmin -connType RMI -f doUpdate.py

How can the administrator suppress a user/password prompt from appearing when this script is run?

Set the user and password in the:

Asas.client.props file.

Bssl.client.props file.

Csoap.client.props file.

Dwsadmin.properties file.

Answer : D

Question 6

An EJB application posts a request message into a JMS destination and waits for a response message on a different JMS destination. To correlate the response message to the request message, the application uses the JMS correlationId of the message. The application waits up to five seconds for a response before timing out the request.

A Message Driven Bean (MDB) running on a different cluster is responsible for consuming the request message, process it and post a response message.

The destinations are defined in a Service Integration Bus (SIB) within the cell.

Intermittent timeout exceptions have occurred for the requester application. How can a system administrator correlate and analyze the debug information from both requester and consumer applications?

AEnable High Performance Extensible Logging (HPEL).Use HPEL logViewer command to see debug information.

BEnable a diagnostic trace in both requester and consumer servers.Use the Integrated Solutions Console (ISC) to set the admin=all trace.Analyze the trace.

CEnable High Performance Extensible Logging (HPEL).Enable Cross Component Trace (XCT) to include request IDs in log and trace records.Use HPEL logViewer command with appropriate filters to see debug information.

DUsing the Integrated Solutions Console (ISC), browse the request message that has timed out and look for any key application data.Search for exceptions using the key application data in both requester and consumer in native_stderr.log and native_stdout.log.

Answer : C

Cross Component Trace (XCT) annotates the logs so that log entries that are related to a request that is serviced by more than one thread, process, or even server are identified as belonging to the same unit of work. XCT helps identify the root cause of problems across components.

References: WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile (July 2013), page 1091

Question 7

A system administrator runs a Python script that creates and configures several servers and realizes that the script fails before completing. Although many tasks succeeded, they are rolled back when the script fails.

Before running the script again, what can the administrator add to the script after each task so the completed tasks are committed even if other tasks fail?

AAdminApp.update ()

BAdminConfig.save()

CAdminControl.invoke(server, 'sync')

DAdminTask.backupJobManager('server')

Answer : C

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