IBM C9510-401 Online Practice Questions and Exam Preparation

IBM C9510-401 Online Questions & Answers

• Question 21:

  A customer has enabled LTPA as their authentication mechanism and has web resources that are not secured by proper security constraints. A system administrator is required to ensure that all web resources are secured. How should the administrator accomplish this?

  A. Enable "Authenticate when any URI is accessed".
  B. Enable "Authenticate only when the URI is protected".Disable "Use available authentication data when an unprotected URI is accessed".
  C. Enable "Authenticate only when the URI is protected".Enable "Use available authentication data when an unprotected URI is accessed".
  D. Map the application security roles to the configured user registry's groups.
  A. Enable "Authenticate when any URI is accessed".

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  Authenticate only when the URI is protected

  The application server challenges the web client to provide authentication data when the web client accesses a Uniform Resource Identifier (URI) that is protected by a Java Platform, Enterprise Edition (Java EE) role. The authenticated

  identity is available only when the web client accesses a protected URI.

  This option is the default Java EE web authentication behavior that is also available in previous releases of WebSphere?Application Server.

  References:

  https://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.base.d oc/ae/usec_webauth.html

• Question 22:

  A system administrator is configuring the security of a new environment. The administrator has been asked to configure one LDAP server that has different sub-trees for business users and administration users. What should the administrator do to implement the required security configuration?

  A. Install and configure a TAI (Trust Association Interceptor)
  B. Configure a security domain for the stand-alone LDAP server.
  C. Use Federated repositories and configure the supported entity types.
  D. Use Stand-alone custom registry and configure the flat file implementation.
  C. Use Federated repositories and configure the supported entity types.

• Question 23:

  A system administrator needs to trigger a javacore only when a java,net.SocketTimeoutException is encountered in real time. What does the administrator have to configure to trigger the javacore dump?

  A. Configure the JAVA_DUMP_OPTS environment variable to capture javacore for ANYSIGNAL and all exceptions.
  B. Configure an -Xdump:java Generic JVM argument on WebSphere Application Server with the filter for java.net.SocketTimeoutException.
  C. Code wsadmin script to capture javacore and then execute it after the java.net.SocketTimeoutException has been encountered.
  D. Use the log filter in HPEL to monitor for java.net.SocketTimeoutException and then gather a javacore dump from the Integrated Solutions Console (ISC).
  B. Configure an -Xdump:java Generic JVM argument on WebSphere Application Server with the filter for java.net.SocketTimeoutException.

  ---

  Dump agents are set up during JVM initialization. They enable you to use events occurring within the JVM, such as Garbage Collection, thread start, or JVM termination, to initiate one of four types of dump or to launch an external tool. Default dump agents are set up at JVM initialization They are sufficient for most cases, but the use of the -Xdump option on the command line allows more detailed configuration of dump agents. The total set of options and sub-options available under -Xdump is very flexible and there are many examples presented in this chapter to show this flexibility.

  Example: To generate system cores: -Xdump:system:events=user References: http://www-01.ibm.com/support/docview.wss?uid=swg21242497

• Question 24:

  A system administrator needs to install WebSphere Application Server using response files, so that a silent install can be done. The administrator has ensured that all required prerequisites have already been installed and, has downloaded and expanded the required WebSphere Application Server installation files.

  What can the administrator run to install the product?

  A. install –options responsefile.xml -silent
  B. install –acceptLicense –options responsefile.xml -silent
  C. imcl –acceptLicense input responsefile.xml –log logfile.txt
  D. IBMIM –acceptLicense –input responsefile.xml –log logfile.txt
  C. imcl –acceptLicense input responsefile.xml –log logfile.txt

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  Example of the use of the response files to install the product. imcl.exe -acceptLicense input C:\temp\keyring_response_file.xml -log C:\temp\keyring_log.xml

• Question 25:

  A WebSphere Application Server cell was configured with a deployment manager node and a custom node. An operator manually changed some configuration files in the custom node, and the node became out of synch with the master

  repository.

  The system administrator used the Synchronize button in the system administration session of the Integrated Solutions Console (ISC) to try to resynchronize the node, but the node remained out of sync.

  What should the administrator do to fix it?

  A. Use the Full Resynchronize button.
  B. Invoke "sync" operation on NodeSync MBean.
  C. Recreate the custom profile with the same name without deleting the node.
  D. Manually copy all the deployment manager configuration files to the custom node.
  A. Use the Full Resynchronize button.

  ---

  Select "Full Resynchronize" in the console.

  References: https://www-01.ibm.com/support/docview.wss?uid=swg21233075

• Question 26:

  A system administrator, Admin1, with Administrator privileges has archived full repository checkpoints. Another administrator, Configurator1, with Configurator privileges has copied the checkpoint contents directory from one of the archived check points to its original location. Configurator1 tries to restore the configuration using the copied archived checkpoint contents and the restore fails.

  How can Configurator1 restore the configuration using the copied archived full repository checkpoint?

  A. Copy the archived checkpoint metadata directory to its original location.
  B. Increase the Automatic checkpoint depth to keep all the delta checkpoint.
  C. Delete the delta checkpoint taken after the full repository checkpoint was taken.
  D. Ask an administrator to update the privileges for Configurator1 to match Admin1.
  A. Copy the archived checkpoint metadata directory to its original location.

  ---

  You must archive both the checkpoint metadata and content directories to store a checkpoint for later restoration.

  References: http://www-01.ibm.com/support/knowledgecenter/SSD28V_8.5.5/com.ibm.websphere.nd.doc/ae/twve_ archive_checkpoint.html

• Question 27:

  A JAX-WS EJB stateless session bean web service needs to be accessed by consumers outside the corporate domain. Which configuration will help a system administrator meet the requirement?

  A. Open firewall ports for both bootstrap and orb listener ports within the cell.
  B. Configure plug-in in the DMZ to send request to the cluster members.
  C. Configure on demand router (ODR) in the DMZ to send requests to the cluster members.
  D. Configure HTTP tunneling to send the client-side Object Request Broker (ORB) request to the server-side ORB.
  A. Open firewall ports for both bootstrap and orb listener ports within the cell.

• Question 28:

  Which of the following comprises an initial Liberty profile server process?

  A. A single JVM, the Liberty kernel, and feature manager.
  B. A single JVM, and OSGI framework and an object request broker.
  C. an OSGI framework, a web container and an EJB container.
  D. AN administrative agent, the Liberty kernel and shared libraries.
  A. A single JVM, the Liberty kernel, and feature manager.

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  The server process comprises a single JVM, the Liberty kernel, and any number of optional features.

  References:

  https://www.ibm.com/support/knowledgecenter/SSEQTP_8.5.5/com.ibm.websphere.wlp.do c/ae/cwlp_about.html

• Question 29:

  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?

  A. Check the System logs for OutOfMemoryErrors.Trigger a heap dump from the Integrated Solutions Console (ISC).Analyze the heap dump.
  B. Configure WebSphere Application Server to enable verbose garbage collection.Analyze the garbage collection cycles in the native logs.
  C. Configure Initial heap to be equal to the max heap.Trigger a heap dump from the Integrated Solutions Console (ISC).Analyze the heap dump.
  D. Configure WebSphere Application Server to increase max heap.Trigger a heap dump from the Integrated Solutions Console (ISC).Analyze the heap dump.
  B. Configure WebSphere Application Server to enable verbose garbage collection.Analyze the garbage collection cycles in the native logs.

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  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 30:

  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?

  A. Configure the storm drain health policy.
  B. Configure the on demand router (ODR) transport chain to tune inbound connections.
  C. Monitor the JVM heap usage to determine a new server weight.
  D. Enable the PMI Extended statistic set and use the Connection Pool summary report.
  A. Configure the storm drain health policy.

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  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