IBM C9510-401 Exam Practice Test Instant Access

Question 1

The administrator needs to identify any security role references and security constraints in a web application.

How can the administrator identify these roles and constraints?

Aibm-application-ext.xml file using a text editor.

Bibmconfig folder in the application after using the EARExpander command.

CWeb deployment descriptor using IBM Assembly and Deploy Tools.

DSecurity role to user/group mapping by using the Integrated Solutions Console (ISC).

Answer : C

Securing web applications using an assembly tool.

You can use three types of web login authentication mechanisms to configure a web application: basic authentication, form-based authentication and client certificate-based authentication. Protect web resources in a web application by assigning security roles to those resources.

References: https://www.ibm.com/support/knowledgecenter/SS7JFU_8.5.5/com.ibm.websphere.nd.doc/ae/tsec_secweb_atk.html

Question 2

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 3

While monitoring a cluster in the cell, the administrator notices that one server in the cluster periodically loses connections to the database. When this happens, requests to the server have a significantly decreased response time and various error conditions are listed in the log files for the server. Since the error codes are returned quickly, the server starts returning responses faster than the average service times for the application. Due to this, the weight for the server is increased and a large percentage of incoming requests are being routed to the erroneous server and the server is getting overloaded with requests.

How can the administrator detect these conditions in the future and take action to prevent this problem?

AConfigure the storm drain health policy.

BConfigure the on demand router (ODR) transport chain to tune inbound connections.

CMonitor the JVM heap usage to determine a new server weight.

DEnable the PMI Extended statistic set and use the Connection Pool summary report.

Answer : A

Storm drain condition tracks requests that have a significantly decreased response time. This policy relies on change point detection on given time series data.

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

Question 4

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 5

A system administrator has deployed an application. The development team has updated a new version of this application. The administrator needs to immediately deploy this updated application and guarantee that only this new edition is used by clients and that any service requests for the application are queued during the deployment of the new application.

How can the administrator achieve this task without any downtime to the application?

APerform a soft rollout.

BPerform a hard rollout.

CPerform an atomic rollout.

DPerform a concurrent activation rollout.

Answer : C

Performing an atomic rollout activates the new edition on half of the cluster first, and then activates the edition on the remaining half of the cluster. While the first half of the cluster is taken offline and updated, application requests are routed to the second half of the cluster. Verify that half the cluster can handle the entire load during the rollout period.

References: http://www.aiotestking.com/ibm/how-can-the-administrator-achieve-this-task-without-any-downtime-to-the-application/

Question 6

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 7

A system administrator has been asked to uninstall an application from a cluster running in a WebSphere Application Server Network Deployment cell. This application was installed from the Integrated Solutions Console (ISC). The monitored directory for the cluster is .

What step(s) can the administrator perform to uninstall the application?

ADelete the application file from <cluster1_dir>.

BStop the running cluster.Delete the application file from <cluster1_dir>.

CStop the running cluster.Copy the application file to <cluster1_dir>.Delete the application file from <cluster1_dir>.

DCreate a properties file to describe the deletion of the application file.Copy the properties file to <cluster1_dir>.

Answer : D

You can use application properties files to install enterprise application files on a server or cluster, update deployed applications or modules, or uninstall deployed applications or modules. Drag or copy a properties file to a monitored directory and the product performs the deployment action described in the properties file. The enterprise application files that you can install, update, or uninstall using properties files include enterprise archive (EAR), web archive (WAR), Java archive (JAR), and Session Initiation Protocol (SIP) archive (SAR) files.

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

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