Download Oracle WebLogic Server 12c: Advanced Administrator II.1z0-134.Prep4Sure.2018-10-11.45q.vcex

Vendor: Oracle
Exam Code: 1z0-134
Exam Name: Oracle WebLogic Server 12c: Advanced Administrator II
Date: Oct 11, 2018
File Size: 637 KB
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Demo Questions

Question 1
My JMS file store size has grown very large and is using up a significant chunk of the disk. I need to reduce the file size during the maintenance window without 
impacting any relevant information. 
Which utility enables me to do this? (Choose the best answer.) 
  1. weblogic.store.Compacter
  2. weblogic.store.Admin
  3. weblogic.store.Reducer
  4. weblogic.file.FileUtil
Correct answer: B
Explanation:
To open the persistent store administration utility from a Java command line, type the following:> java weblogic.store.Admin Here is an example of using the compact command to compact the space occupied by a file store in the mystores directory. > storeadmin->compact -dir c:\mystores -tempdir c:\tmpReference: https://docs.oracle.com/middleware/1212/wls/CNFGD/store.htm#CNFGD275
To open the persistent store administration utility from a Java command line, type the following:
> java weblogic.store.Admin 
Here is an example of using the compact command to compact the space occupied by a file store in the mystores directory. 
> storeadmin->compact -dir c:\mystores -tempdir c:\tmp
Reference: https://docs.oracle.com/middleware/1212/wls/CNFGD/store.htm#CNFGD275
Question 2
Your WebLogic Server (WLS) environment consists of multiple domains. 
Which is a true statement about WLS domains? (Choose the best answer.) 
  1. Multiple domains can use the same or separate WLS installation while running on the same machine.
  2. Domains require a minimum of one managed server.
  3. Multiple domains require separate WLS installations while running on the same machine.
  4. Multiple domains require individual Node Managers while running on the same machine.
  5. Multiple domains can share the same administration server.
Correct answer: A
Explanation:
You can use a single Oracle WebLogic Server installation to create and run multiple domains, or you can use multiple installations to run a single domain. Incorrect Answers:B: Domains include a special WebLogic Server instance called the Administration Server, which is the central point from which you configure and manage allresources in the domain. Usually, you configure a domain to include additional WebLogic Server instances called Managed Servers. C: A single WLS installation can have multiple domains.    D: By specifying multiple domains in the nodemanager.domains file, you can configure a single, machine-scoped Node Manager process which manages serverinstances belonging to multiple WebLogic domains. E: Each domain requires its own Administration Server for performing management activities.Reference: https://docs.oracle.com/cd/E12839_01/web.1111/e13716/understand_domains.htm#DOMCF116
You can use a single Oracle WebLogic Server installation to create and run multiple domains, or you can use multiple installations to run a single domain. 
Incorrect Answers:
B: Domains include a special WebLogic Server instance called the Administration Server, which is the central point from which you configure and manage all
resources in the domain. Usually, you configure a domain to include additional WebLogic Server instances called Managed Servers. 
C: A single WLS installation can have multiple domains.
  
D: By specifying multiple domains in the nodemanager.domains file, you can configure a single, machine-scoped Node Manager process which manages server
instances belonging to multiple WebLogic domains. 
E: Each domain requires its own Administration Server for performing management activities.
Reference: https://docs.oracle.com/cd/E12839_01/web.1111/e13716/understand_domains.htm#DOMCF116
Question 3
You are asked to configure Node Manager for your production environment. You are considering whether to use the Java version or the script-based version of Node Manager. 
Which statement correctly describes the difference between the two versions?
  1. If you are installing WebLogic Server on a Windows system, you must use the Java version of Node Manager.
  2. The script-based version of Node Manager can be used in conjunction with inetd on supported UNIX systems.
  3. The script-based version of Node Manager requires a larger footprint than the Java version.
  4. When Node Manager is used for consensus leasing, you may see faster performance with the script-based version.
Correct answer: A
Explanation:
Java-based Node Manager runs within a Java Virtual Machine (JVM) process. It is recommended that you run it as a Windows service on Windows platforms and as an operating system service on UNIX platforms. For UNIX and Linux systems, WebLogic Server provides a script-based version of Node Manager.  Reference: http://docs.oracle.com/cd/E12839_01/web.1111/e13740/overview.htm#NODEM113
Java-based Node Manager runs within a Java Virtual Machine (JVM) process. It is recommended that you run it as a Windows service on Windows platforms and as an operating system service on UNIX platforms. 
For UNIX and Linux systems, WebLogic Server provides a script-based version of Node Manager.  
Reference: http://docs.oracle.com/cd/E12839_01/web.1111/e13740/overview.htm#NODEM113
Question 4
Your organization is using a Multi data source (MDS) on WebLogic Server to support applications connecting to an Oracle RAC database. You have been tasked with configuring a new callback handler for the MDS. 
Which two statements are true concerning related MDS options and behavior? (Choose two.)
  1. Callback handlers are optional when using the Failover MDS Algorithm.
  2. If the Failover Callback Handler attribute is set on the MDS, the Test Frequency attribute is no longer used.
  3. Callback handlers are called for both failover and failback decisions.
  4. You can register only one callback handler for each WebLogic server.
Correct answer: CD
Explanation:
C: A callback handler used to control the failover and failback within a multi data source must include an implementation of the weblogic.jdbc.extensions.ConnectionPoolFailoverCallback interface. D: You can register a callback handler with WebLogic Server that controls when a multi data source with the Failover algorithm fails over connection requests from one JDBC data source in the multi data source to the next data source in the list. Incorrect Answers:B: Frequency of these tests is controlled by the Test Frequency Seconds attribute of the multi source. The default value for Test Frequency is 120 seconds, so if you do not specifically set a value for the option, the multi data source will test disabled data sources every 120 seconds. Reference: http://docs.oracle.com/cd/E23943_01/web.1111/e13737/jdbc_multidatasources.htm#JDBCA223
C: A callback handler used to control the failover and failback within a multi data source must include an implementation of the weblogic.jdbc.extensions.ConnectionPoolFailoverCallback interface. 
D: You can register a callback handler with WebLogic Server that controls when a multi data source with the Failover algorithm fails over connection requests from one JDBC data source in the multi data source to the next data source in the list. 
Incorrect Answers:
B: Frequency of these tests is controlled by the Test Frequency Seconds attribute of the multi source. The default value for Test Frequency is 120 seconds, so if you do not specifically set a value for the option, the multi data source will test disabled data sources every 120 seconds. 
Reference: http://docs.oracle.com/cd/E23943_01/web.1111/e13737/jdbc_multidatasources.htm#JDBCA223
Question 5
You are managing and monitoring durable subscribers for your JMS topics to ensure that all the subscribers would receive persistent messages. 
However, JMS connections are currently restricted, so only one connection with the same client ID could exist in the scope of your cluster. 
On which page of the Administration Console can you set Client ID Policy to unrestricted in order to lift this restriction? (Choose the best answer.)
  1. Topic > Monitoring > Durable Subscribers
  2. Connection Factory > Configuration > Client
  3. Topic > Configuration > Thresholds and Quotas
  4. Topic > Configuration > Overrides
  5. Topic > Configuration > Durable Subscribers
  6. JMS Server > Configuration > Durable Subscribers
Correct answer: B
Explanation:
You can find help on Client ID Policy configuration through the following path: OTN Home > Oracle WebLogic Server 12.1.1.0 Documentation > Administration Console Online Help > JMS Connection Factory: Configuration: ClientReference: http://docs.oracle.com/cd/E24329_01/apirefs.1211/e24401/pagehelp/JMSjmsconnectionjmsconnectionfactoryconfigclientparamstitle.html
You can find help on Client ID Policy configuration through the following path: 
OTN Home > Oracle WebLogic Server 12.1.1.0 Documentation > Administration Console Online Help > JMS Connection Factory: Configuration: Client
Reference: http://docs.oracle.com/cd/E24329_01/apirefs.1211/e24401/pagehelp/JMSjmsconnectionjmsconnectionfactoryconfigclientparamstitle.html
Question 6
Which two automatic migration scenarios require node manager for all migratable services? (Choose two.)
  1. Consensus leasing
  2. Database leasing with no pre and post migration scripts 
  3. Database leasing with pre and post migration scripts
  4. Synchronous leasing
Correct answer: AC
Explanation:
When using automatic service migration, the Node Manager is required to get health monitoring information about the member servers involved, as follows:Consensus leasing – Node Manager must be running on every machine hosting managed servers within the cluster. Database leasing – Node Manager must be running on every machine hosting managed servers within the cluster only if pre/post-migration scripts are defined. If pre/post-migrations are not defined, then Node manager is not required. Reference: https://docs.oracle.com/cd/E13222_01/wls/docs103/cluster/service_migration.html
When using automatic service migration, the Node Manager is required to get health monitoring information about the member servers involved, as follows:
  • Consensus leasing – Node Manager must be running on every machine hosting managed servers within the cluster. 
  • Database leasing – Node Manager must be running on every machine hosting managed servers within the cluster only if pre/post-migration scripts are defined. If pre/post-migrations are not defined, then Node manager is not required. 
Reference: https://docs.oracle.com/cd/E13222_01/wls/docs103/cluster/service_migration.html
Question 7
Which two statements are true about the role of cluster master in whole server migration? (Choose two.)
  1. There is exactly one cluster master in the cluster at a given point of time.
  2. The cluster master must host all the pinned services in the cluster.
  3. Any managed server in the cluster can serve as the cluster master.
  4. A cluster master must always be different from a singleton master.
  5. The cluster master must always be started with the node manager.
Correct answer: AC
Explanation:
One server instance in a cluster that contains migratable servers acts as the cluster master and orchestrates the process of automatic server migration, in the event of failure.  Any Managed Server in a cluster can serve as the cluster master, whether it hosts pinned services or not. Note: Any server instance in the cluster can serve as the cluster master. When you start a cluster that contains migratable servers, the first server to join the cluster becomes the cluster master and starts up the cluster manager service. If a cluster does not include at least one migratable server, it does not require a cluster master, and the cluster master service does not start up. Reference: https://docs.oracle.com/cd/E12839_01/web.1111/e13709/migration.htm#CLUST285
One server instance in a cluster that contains migratable servers acts as the cluster master and orchestrates the process of automatic server migration, in the event of failure.  
Any Managed Server in a cluster can serve as the cluster master, whether it hosts pinned services or not. 
Note: Any server instance in the cluster can serve as the cluster master. When you start a cluster that contains migratable servers, the first server to join the cluster becomes the cluster master and starts up the cluster manager service. If a cluster does not include at least one migratable server, it does not require a cluster master, and the cluster master service does not start up. 
Reference: https://docs.oracle.com/cd/E12839_01/web.1111/e13709/migration.htm#CLUST285
Question 8
You are trying to set up a JMS Session with a specified acknowledgment mode. You want the application that receives the message to explicitly take care of the acknowledgment. 
Which option represents a valid choice for the acknowledgment mechanism that you can use? (Choose the best answer.) 
  1. AUTO_ACKNOWLEDGE
  2. CLIENT_ACKNOWLEDGE
  3. DUPS_OK_ACKNOWLEDGE
  4. DEFAULT_ACKNOWLEDGE
Correct answer: B
Explanation:
With CLIENT_ACKNOWLEDGE the Session object relies on the application to call an acknowledge method on a received message. Once the method is called, the session acknowledges all messages received since the last acknowledge. Incorrect Answers:A: With CLIENT_ACKNOWLEDGE the Session object acknowledges receipt of a message once the receiving application method has returned from processing it.C: With DUPS_OK_ACKNOWLEDGE the Session object acknowledges receipt of a message once the receiving application method has returned from processing it;duplicate acknowledges are permitted. D: There is no acknowledge mode named DEFAULT_ACKNOWLEDGE.Reference: http://docs.oracle.com/cd/E12840_01/wls/docs103/jms/fund.html
With CLIENT_ACKNOWLEDGE the Session object relies on the application to call an acknowledge method on a received message. Once the method is called, the session acknowledges all messages received since the last acknowledge. 
Incorrect Answers:
A: With CLIENT_ACKNOWLEDGE the Session object acknowledges receipt of a message once the receiving application method has returned from processing it.
C: With DUPS_OK_ACKNOWLEDGE the Session object acknowledges receipt of a message once the receiving application method has returned from processing it;
duplicate acknowledges are permitted. 
D: There is no acknowledge mode named DEFAULT_ACKNOWLEDGE.
Reference: http://docs.oracle.com/cd/E12840_01/wls/docs103/jms/fund.html
Question 9
You created a script to monitor your WebLogic Server WLS Execute Thread:
  
Here is a message in your ExecuteThread.log file:
  
What is the value of xxxx if the thread has been running a request for twenty minutes, assuming a default configuration? 
  1. SRANDBY
  2. ACTIVE
  3. STUCK
  4. RUNNING
  5. WAITING
  6. ADMIN
  7. FAILED
Correct answer: C
Explanation:
This thread is considered Stuck by WebLogic because it's been running for over the time defined in MaxStuckThreadTime (600 seconds by default). Weblogic Server waits for this time to be reached before marking a thread as stuck if the thread is still working after this time. Example: [STUCK] ExecuteThread: '2' for queue: 'weblogic.kernel.Default (self-tuning)' id=73 idx=0x128 nid=13410 prio=1 alive, in native, daemonReference: https://blogs.oracle.com/WebLogicServer/entry/analyzing_a_stuck_weblogic_execute
This thread is considered Stuck by WebLogic because it's been running for over the time defined in MaxStuckThreadTime (600 seconds by default). Weblogic Server waits for this time to be reached before marking a thread as stuck if the thread is still working after this time. 
Example: [STUCK] ExecuteThread: '2' for queue: 'weblogic.kernel.Default (self-tuning)' id=73 idx=0x128 nid=13410 prio=1 alive, in native, daemon
Reference: https://blogs.oracle.com/WebLogicServer/entry/analyzing_a_stuck_weblogic_execute
Question 10
A current production WebLogic Server (WLS) domain needs to be upgraded without affecting the users. What are the five steps to follow for a Rolling Update? 
(Choose five.)
  1. Back up the contents of your domain.
  2. Use pack and unpack to upgrade each of the servers in the machine.
  3. Shut down the servers in a single machine.
  4. Repeat the process for all machines in the domain.
  5. Restart the servers in the machine.
  6. Repeat the process for all domains in the machine.
  7. Upgrade the servers in the machine.
Correct answer: ACDEG
Explanation:
A: Before you begin the upgrade process, make sure that you take any necessary precautions such as:Back up your applications, database schema, other application data, and domains. If required, obtain latest third party plug-ins or components that are compatible with required non-Oracle components. For example, Apache Web Server libraries. CGED: The rolling upgrade process includes stopping the Administration Server, installing the upgrade, restarting the Administration Server, and then doing the same for each Managed Server in the cluster (machine). Reference: http://docs.oracle.com/cd/E14571_01/web.1111/e13754/rolling_upgrade.htm#WLUPG268
A: Before you begin the upgrade process, make sure that you take any necessary precautions such as:
  • Back up your applications, database schema, other application data, and domains. 
  • If required, obtain latest third party plug-ins or components that are compatible with required non-Oracle components. For example, Apache Web Server libraries. 
CGED: The rolling upgrade process includes stopping the Administration Server, installing the upgrade, restarting the Administration Server, and then doing the same for each Managed Server in the cluster (machine). 
Reference: http://docs.oracle.com/cd/E14571_01/web.1111/e13754/rolling_upgrade.htm#WLUPG268
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