IBM IBM Certifications C9510-418 Questions & Answers

• Question 71:

  Which two statements describe a web server in a cell topology?

  A. Creating a new node for a web server adds a managed node.

  B. Creating a new node for a web server adds an unmanaged node.

  C. Adding a web server to an existing node created a managed node.

  D. Deleting a web server from an unmanaged node creates a managed node.

  E. Deleting a web server from a managed node creates an unmanaged node.

  Correct Answer: AE

  A managed node must exist to define a Web server definition, which is always on a managed node.

  

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

• Question 72:

  In an IBM WebSphere Application Server cluster, an administrator notices EJB requests are not evenly distributed on the cluster members during the load test.

  What two things can the administrator verify in order to identify and resolve the issue? (Choose two.)

  A. Ensure Dynamic Workload Management is enabled.

  B. Ensure host scoped routing optimization is enabled.

  C. Ensure PMI Workload Management counters are enabled.

  D. Ensure each server in the cluster has an equal weighted value.

  E. Ensure the Web server plug-in is using the round robin algorithm.

  Correct Answer: AD

  A: Workload management optimizes the distribution of client processing tasks. Incoming work requests are distributed to the application servers, enterprise beans, servlets, and other objects that can most effectively process the requests.

  D: The server weighted round robin routing policy ensures a balanced routing distribution based on the set of server weights that have been assigned to the members of a cluster. For example, if all servers in the cluster have the same weight, the expected distribution for the cluster is that all servers receive the same number of requests. If the weights for the servers are not equal, the distribution mechanism sends more requests to the higher weight value servers than the lower weight value servers. The policy ensures the distribution that you want, based on the weights that are assigned to the cluster members.

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

• Question 73:

  When adding a repository to a federated repository configuration, which type of repository can be added only using wsadmin commands?

  A. File repository

  B. LDAP repository

  C. SAML repository

  D. Database repository

  Correct Answer: D

  Federated repositories Supports multiple types of repositories such as file-based, LDAP, database, and custom. In WebSphere Application Server Version 8.5, file-based and LDAP repositories are supported by the administrative console. For database and custom repositories, you can use the wsadmin command-line interface or the configuration application programming interfaces (API).

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

• Question 74:

  When deploying a new edition of an application, which edition rollout configuration option should be used to ensure that the two editions of the application are not active at the same time?

  A. Atomic

  B. Grouped

  C. Soft reset

  D. Hard reset

  Correct Answer: A

  Performing an atomic rollout to an edition replaces an edition on half of the cluster at a time to serve all user requests with a consistent edition of the application. All user requests are served by either the previous or the new edition; user requests are never served by both editions.

  An atomic rollout ensures that all application requests are served by a consistent edition, for example, either edition 1.0 or 2.0, but not by both.

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

• Question 75:

  What are two automated administrative tasks that can be done with configuration checkpoints? (Choose two.)

  A. delete

  B. restore

  C. archive

  D. backup

  E. compress

  Correct Answer: AD

  If you want to preserve delta checkpoints, you must archive checkpoints before they are automatically deleted.

  A delta checkpoint is created automatically by the product each time a configuration change is made.

  Incorrect Answers:

  C: The product does not have an automated function for archiving.

  References: https://www.ibm.com/support/knowledgecenter/SSEQTP_8.5.5/ com.ibm.websphere.base.doc/ae/twve_archive_checkpoint.html https://www.ibm.com/support/ knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/cwve_xdsochckpt.html

• Question 76:

  An administrator notices a sudden increase in the user load that causes resource contention on the database server.

  What preventive measure can the administrator take to avoid database outage?

  A. Enable surge protection.

  B. Configure Stuck connection.

  C. Reduce connection pool size.

  D. Reduce WebContainer Thread pool size.

  Correct Answer: C

  Maximum Connection Pool Size

  When determining the maximum size of the database connection pool, consider the following issues:

  The total number of connections that the WebSphere Commerce cluster can open to the database should

  not overwhelm your database.

  Reference: http://www-01.ibm.com/support/docview.wss?uid=swg21358336

• Question 77:

  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 health of 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.

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

• Question 78:

  What can an administrator use to remotely manage multiple stand-alone (unfederated) application servers?

  A. Job Manager

  B. Administrative agent

  C. Deployment manager

  D. remoteServer.jacl script

  Correct Answer: A

  Administering nodes remotely using the job manager In a flexible management environment, you can asynchronously submit and administer jobs for large numbers of stand-alone application servers, deployment managers, and host computers over a geographically dispersed area. At the remote machines, you can use jobs to manage applications, modify the product configuration, or do general purpose tasks such as run a script.

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

• Question 79:

  When updating an application, what is important to keep in mind?

  A. The application is only updated during the next server restart.

  B. The application is automatically stopped, updated, and restarted.

  C. The application is only updated during the next restart of the application.

  D. The application is stopped, updated, and restarted at the scheduled time.

  Correct Answer: B

  If the application is updated while it is running, WebSphere Application Server automatically stops the application, updates the application logic and restarts the application.

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

• Question 80:

  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.

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