[Free] 2017(Oct) EnsurePass Braindumps IBM C2180-401 V13 Dumps with VCE and PDF 21-30

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IBM WebSphere Application Server Network Deployment V8.5.5 and Liberty Profile, System Administration

Question No: 21

A system administrator decides to use the advice from the Performance and Diagnostic Advisor to identify the optimum connection pool settings for data sources. In a cell, the data source db2datasource is defined under node scope and used by two servers from that node. The administrator receives two different sets of advice for db2datasource.

. One set of advice suggestsincreasingthe maximum connection pool size for db2datasource.

. The other suggests reducing the maximum connection pool size for db2datasource.

How should the administrator configure the data sources before reusing the Performance and Diagnostic Advisor?

  1. Create a data source of the same name under cell scope.

  2. Create a data source of the same name under server scope for each server.

  3. Increase the minimum connection pool size for the data source.

  4. Decrease the maximum connection pool size for the data source.

Answer: B

Question No: 22

An application deployed to a multi-node cluster is reported to have slowness and hung threads. A system administrator is asked to review the logs on each node and identify if the hung threads are a false alarm.

How can the administrator determine that the hung threads are a false alarm? Analyze the:

  1. ffdc logs.

  2. SystemErr.log.

  3. SystemOut.log.

  4. Native_stderr.log.

Answer: C

Explanation: http://www- 01.ibm.com/support/knowledgecenter/ssw_i5_54/rzatz/trbhangdet.htm(See the False Alarm).

Question No: 23

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:

鈥onitor how much time is spent in the various parts of the environment.

鈥etermine the concurrent usage of the site.

鈥dentify potential memory leaks.

Which PMI modules can the administrator examine to obtain this data?

  1. Number of requests, Java virtual memory. Average response time

  2. Number of requests, Average response time. Web server thread pools

  3. Average response time, Java virtual memory. Number of Live HTTP Sessions

  4. Average response time. Web server thread pools. Number of Live HTTP Sessions

Answer: B

Question No: 24

While coordinating a flexible management topology, the job manager can send commands to which components?

  1. Application server and name server.

  2. On demand router and load balancer.

  3. Deployment manager and admin agent.

  4. Node agent and web administration server.

Answer: C

Reference:http://java.boot.by/ibm-377/ch01s06.html(See the Flexible management 2ndParagraph 5thLine, and 3rdParagraph).

Question No: 25

A system administrator suspects that the slow performance of an application might be caused by lock contention.

To debug this further, what can the administrator do using IBM Support Assistant?

  1. Analyze the running server using IBM Monitoring and Diagnostic Tools for Java -Health center.

  2. Collect a java core and analyze it using IBM Monitoring and Diagnostic Tools for Java – Health Center.

  3. Collect three thread dumps at equal time intervals and analyze them using IBM Monitoring and Diagnostic Tools for Java – Dump Analyzer.

  4. Collect three system dumps at equal time intervals and analyze them using IBM Monitoring and Diagnostic Tools for Java – Memory Analyzer.

Answer: A

Reference:http://www-01.ibm.com/support/docview.wss?uid=swg27040548

Question No: 26

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:

  1. Aweb browser to connect to the node agent https port.

  2. Aweb browser to connect to the deployment manager admin_host port.

  3. The job manager to submit a job to update the unmanaged server.

  4. An ssh connection to the node and modify the client_types.xmI file.

Answer: B

Question No: 27

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?

  1. Enable application lazy start with elasticity mode.

  2. Set theproactiveldleStopcustom property to true

  3. Set the Number of instances to a value greater than zero.

  4. Disable the optionquot;If other dynamic clusters need resources, stop all instances of this cluster during periods of inactivityquot;.

Answer: D Reference:http://pic.dhe.ibm.com/infocenter/wxdinfo/v6r1/index.jsp?topic=/com.ibm.we bsphere.ops.doc/info/reference/rodccustprop.html

Question No: 28

A performance test team was testing the capacity of concurrent users of a web application deployed on a multi-processor server. While testing 250 concurrent users, the administrator discovers connections to the database are failing.

In response, a system administrator increased the connection pool to the maximum limit which the database allows and increased the prepared statement cache size. The test passed, but the application response time was slower.

How should the system administrator tune the data source properties to improve the

application response time?

  1. Change connection pools purge policy.

  2. Decrease connection poolreapstime.

  3. Decrease number of free pool partitions.

  4. Decrease the prepared statement cache size.

Answer: A

Reference:https://www- 01.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.base.doc/ae/tda t_chgconwsadmin.html

Question No: 29

A newly deployed application has authorization errors when invoking EJB methods from a servlet. An additional review indicates that users are authenticated, but do not have the correct authorization.

How can a system administrator fix the issue ensuring only authorized access?

  1. Using the Integrated Solutions Console (ISC), map all security roles to the special subject Everyone.

  2. Using the Integrated Solutions Console (ISC), map the security roles that are still not mapped to groups in the current user registry.

  3. Edit the application using an assembly tool to add a security constraint for the servlet and reinstall the application.

  4. Edit the application using an assembly tool to remove the security constraint defined for the servlet and reinstall the application.

Answer: B

Question No: 30

A system administrator is asked by a development team to monitor the performance of a newly deployed EJB application. The administrator noticed that the heap size of the application server is growing.

What should the administrator do to fix the problem using ORB settings?

  1. Use J2EE managed object MBeans.

  2. Enable the pass by reference option.

  3. Disable the application scoped resources in the application deployment descriptor.

  4. Ensure that Process embedded configurations is not selected when exporting the EAR.

Answer: C

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