File Info
| Exam | IBM WebSphere Application Server Network Deployment V9.0 Core Administration |
| Number | C9510-418 |
| File Name | IBM.C9510-418.CertDumps.2020-02-02.106q.vcex |
| Size | 202 KB |
| Posted | Feb 02, 2020 |
| Download | IBM.C9510-418.CertDumps.2020-02-02.106q.vcex |
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Demo Questions
Question 1
An administrator notices that the Message Driven Beans (MDBs) are slow to complete, and decides to increase the ‘Maximum concurrent MDB invocations per endpoint’.
Which thread pool should be tuned to ensure it can run the maximum number of MDBs without waiting?
- Default
- WebContainer
- SIBJMSRAThreadPool
- WMQJCAResourceAdapter
Correct answer: D
Explanation:
The thread pool WMQJCAResourceAdapter is referenced by the WebSphere MQ (WMQ) resource adapter inbound delivery to MDB's. When WebSphere MQ resource adapter is used in conjunction with the activation specs, the resource adapter's Work Manager uses the values defined for the WMQJCAResourceAdapter for utilizing the total number of threads defined. Ideally the default values provides for the WMQJCAResourceAdapter will be sufficient for the resource adapter. But in case there is an heavy load on the system processing huge number of messages, you can increase the maximum number of threads the thread pool can hold. Reference: http://www-01.ibm.com/support/docview.wss?uid=swg21383363 The thread pool WMQJCAResourceAdapter is referenced by the WebSphere MQ (WMQ) resource adapter inbound delivery to MDB's. When WebSphere MQ resource adapter is used in conjunction with the activation specs, the resource adapter's Work Manager uses the values defined for the WMQJCAResourceAdapter for utilizing the total number of threads defined.
Ideally the default values provides for the WMQJCAResourceAdapter will be sufficient for the resource adapter. But in case there is an heavy load on the system processing huge number of messages, you can increase the maximum number of threads the thread pool can hold.
Reference: http://www-01.ibm.com/support/docview.wss?uid=swg21383363
Question 2
What is the purpose of setting the JVM custom property com.ibm.websphere.nodeagent.bootstrap.maxthreadpool = 5 on the node agent?
- Start five application server processes in parallel.
- Use five threads to process parallel requests on node agent.
- Create five threads to communicate with application servers.
- Create five threads to communicate with deployment manager.
Correct answer: A
Explanation:
Reference: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/xrun_jvm.html Reference: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/xrun_jvm.html
Question 3
How can an administrator disable automated restarts for the Health Controller?
- Use the isServerEnabled.jac1 script.
- Use the HmmControllerProcs.jacl script.
- Clear the Enable health monitoring check box in the Integrated Solutions Console.
- Select the Disable automated restarts check box in the Integrated Solutions Console.
Correct answer: B
Explanation:
Reference: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/rwve_odhealthfail.html Reference: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/rwve_odhealthfail.html
Question 4
An administrator notices performance degradation after a new deployment of an application. After investigation, increased CPU usage is observed due to frequent GC cycles. However, there is no significant growth in the heap memory.
How can the resource consumption issue be resolved?
- Increase max heap.
- Increase perm space.
- Increase nursery size.
- Change the GC policy.
Correct answer: D
Question 5
When installing IBM WebSphere Application Server on a network file system, IBM Installation Manager fails with an insufficient disk space error.
How could this be resolved?
- Increase disk space and try again.
- Delete temporary files and try again.
- Reboot operating system and try again.
- Disable disk space checking in the config.ini and try again.
Correct answer: D
Explanation:
On some network file systems, disk space might not be reported correctly at times; and you might need to bypass disk-space checking and proceed with your installation. To disable disk-space checking, specify the following system property in the config.ini file in IM_install_root/eclipse/configuration and restart Installation Manager. Reference: https://www.ibm.com/support/knowledgecenter/SSEQTP_9.0.0/com.ibm.websphere.installation.base.doc/ae/tins_troubleshoot.html On some network file systems, disk space might not be reported correctly at times; and you might need to bypass disk-space checking and proceed with your installation.
To disable disk-space checking, specify the following system property in the config.ini file in IM_install_root/eclipse/configuration and restart Installation Manager.
Reference: https://www.ibm.com/support/knowledgecenter/SSEQTP_9.0.0/com.ibm.websphere.installation.base.doc/ae/tins_troubleshoot.html
Question 6
What is the main difference between interim fixes and product fix packs as they relate to IBM WebSphere Application Server?
- Interim fixes typically contain new features or functionality ahead of future product fix packs.
- Product fix packs are a combination of interim fixes and internal fixes to make patching easier.
- Product fix packs are generally reserved for new features or functionality whereas interim fixes are provided only to fix known issues.
- Product fix packs bring WebSphere Application Server to a new product level whereas interim fixes provide corrective service for specific known problems.
Correct answer: D
Explanation:
Product fix packs contain bundled service to bring WebSphere Application Server up to a new product level. Interim fixes provide corrective service for specific known problems. Reference: https://www.ibm.com/support/knowledgecenter/en/SS7K4U_8.5.5/com.ibm.websphere.installation.zseries.doc/ae/tins_install_fixes_z.html Product fix packs contain bundled service to bring WebSphere Application Server up to a new product level. Interim fixes provide corrective service for specific known problems.
Reference: https://www.ibm.com/support/knowledgecenter/en/SS7K4U_8.5.5/com.ibm.websphere.installation.zseries.doc/ae/tins_install_fixes_z.html
Question 7
What certificate expiration option should be disabled to prevent possible outages?
- Enable checking.
- Enable expiration check notification.
- Delete expiring certificates and signers.
- Replace expiring self-signed certificates automatically.
Correct answer: D
Explanation:
Enabling WebSphere Application Server to automatically replace the expiring certificates in a production environment can potentially cause a short- or long-term outage Reference: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/usec_sslmancertexpir.html Enabling WebSphere Application Server to automatically replace the expiring certificates in a production environment can potentially cause a short- or long-term outage
Reference: https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/usec_sslmancertexpir.html
Question 8
Which of the following is true regarding disk offload?
- The amount of disk space to use cannot be specified.
- On server startup, DynaCache loads the entire disk cache into memory.
- The number of cache entries that are offloaded to disk cannot be specified.
- Disk offload can be enabled to have a cache entry copied to the file system at a configurable location.
Correct answer: ACD
Explanation:
AC: Before you enable disk offload, consider the following:You cannot specify the number of cache entries that are offloaded to disk. You cannot specify the amount of disk space to use. D: You can enable disk offload to have a cache entry copied to the file system (the location is configurable).Reference: https://www.ibm.com/support/knowledgecenter/SSEQTP_9.0.0/com.ibm.websphere.base.doc/ae/udyn_rcachesettings.html AC: Before you enable disk offload, consider the following:
You cannot specify the number of cache entries that are offloaded to disk.
You cannot specify the amount of disk space to use.
D: You can enable disk offload to have a cache entry copied to the file system (the location is configurable).
Reference: https://www.ibm.com/support/knowledgecenter/SSEQTP_9.0.0/com.ibm.websphere.base.doc/ae/udyn_rcachesettings.html
Question 9
When configuring IBM WebSphere Application Server to use LDAP, which of the following is used to connect to the LDAP server?
- Bind distinguished name
- Base distinguished Name
- Operating System user name
- Primary administrative user name
Correct answer: B
Explanation:
Reference: https://www.ibm.com/support/knowledgecenter/en/SSJJ9R_6.0.2/com.ibm.jazz.install.doc/topics/t_instl_config_ldap_on_was.html Reference: https://www.ibm.com/support/knowledgecenter/en/SSJJ9R_6.0.2/com.ibm.jazz.install.doc/topics/t_instl_config_ldap_on_was.html
Question 10
What does the delta configuration checkpoint contain?
- All the changed (newer version) configuration files.
- Before and after versions of configuration files that have changed
- Backup (older version) of the configuration files that have changed
- An .xml file containing a list of changes and configuration file details
Correct answer: B
Explanation:
Reference: ftp://ftp.software.ibm.com/software/iea/content/com.ibm.iea.was_v8/was/8.5/Architecture/WASV85_AdminAudit_Checkpoint.pdf (p.10) Reference: ftp://ftp.software.ibm.com/software/iea/content/com.ibm.iea.was_v8/was/8.5/Architecture/WASV85_AdminAudit_Checkpoint.pdf (p.10)
