IBM IBM Certified System Administrator C9510-317 Questions & Answers

• Question 11:

  A system administrator needs to identify the most time-intensive web components of a running application, and determine which components are the slowest. The administrator does this from the Tivoli Performance Viewer (TPV) by:

  A. viewing diagnostic trace output.

  B. viewing Servlets Summary Report.

  C. viewing the log file for the web server.

  D. opening Reports tab, Runtime operations, reports.

  Correct Answer: B

• Question 12:

  A system administrator needs to identify the performance of a database application and JDBC connection pool, CPU usage time and response time. Which tools should the administrator use to get this data?

  A. Client program

  B. Request metrics

  C. Custom Java code

  D. Heap dump analyzer

  E. Performance Monitoring Infrastructure (PMI)

  Correct Answer: BE

• Question 13:

  While monitoring a JDBC data source's performance during a test load, a system administrator notices that there are a large number of prepared statements discarded from the cache. In order to improve application throughput, how should the administrator tune the data source?

  A. Increase the size of the prepared statement cache until there are no statement discards under load.

  B. Increase the maximum connection pool size and keep the prepared statement cache at its default size.

  C. Set the connection pool purge policy to "EntirePool" and increase the maximum connection pool size.

  D. Set the minimum connection pool size equal to the maximum connection pool size and keep the prepared statement cache at its default size.

  Correct Answer: A

• Question 14:

  A system administrator is tuning a WebSphere Application Server system for optimal performance, based on advice obtained from the Performance and Diagnostic advisor. What setting should the administrator configure to ensure accurate advice for the specific configuration of the system?

  A. Specify the process ID of the server

  B. Specify the number of processors on the server

  C. Enable tracing on the server

  D. Enable High Performance Extensible Logging (HPEL) logging

  Correct Answer: B

• Question 15:

  A system administrator needs to improve performance of a WebSphere Application Server runtime. The computations of JavaServer Pages (JSP), servlets, portlets, Web services and WebSphere commands should be performed once and served from memory.

  What should the administrator configure?

  A. Caching Proxy

  B. Edge Components

  C. Dynamic cache service

  D. WebSphere eXtreme Scale

  Correct Answer: C

• Question 16:

  An administrator needs to monitor the frequency of garbage collection (GC) cycles that are triggered when a typical client load is run against the server. How should the administrator monitor the frequency of garbage collections?

  A. Use the Log Analyzer to view the verbose GC logs.

  B. Use the HPEL Log Viewer and look for System.gc() calls.

  C. Use the Tivoli Performance Viewer (TPV) and select the JVM Runtime.

  D. Run the performance servlet to gather the verbose GC data.

  Correct Answer: C

• Question 17:

  A system administrator needs to monitor a transaction and determine how much time it spends in the web container, EJB container, and backend database. Which tool should the administrator use to gather response times for each component?

  A. Request metrics

  B. Performance servlet

  C. Thread Pool Summary Report

  D. Runtime Performance and Diagnostic Advisor

  Correct Answer: A

• Question 18:

  Performance issues have caused several high profile outages in a WebSphere Application Server Network Deployment V8.0 environment. The application developer has isolated the problem to one specific application. To assist with the problem diagnosis a system administrator has been asked to enable the highest level of WebSphere tracing available.

  How should the system administrator accomplish this? Enable tracing and set the level to:

  A. *

  B. all

  C. finest

  D. debug

  Correct Answer: B

• Question 19:

  An application server needs to be diagnosed for out-of-memory issues. The system administrator will use a tool that performs the analysis of the heap dump. Which tool should the administrator use?

  A. IBM Support Assistant (ISA)

  B. IBM Solutions Console (ISC)

  C. IBM Assembly and Deploy Tools (IADT)

  D. Tivoli Performance Viewer (TPV)

  Correct Answer: A

• Question 20:

  Customers are complaining that a particular web site is "hanging". To troubleshoot the problem, a system administrator decides to trigger several thread dumps to determine which threads might be hung. How can the administrator trigger the thread dumps?

  A. Use wsadmin to execute the dumpThreads command for the application server.

  B. Run the collector command line script with the -Summary option set to "yes".

  C. Set the node agent's custom property "com.ibm.websphere.threadmonitor.dump.java" to true.

  D. From the Integrated Solutions Console (ISC), click the System dump button for the application server.

  Correct Answer: A