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Question 1:

Which two statements are true about multicast communication within a cluster?

A. Multicast can be used for cluster heartbeat messages.

B. Multicast is used to replicate session state between servers.

C. Multiple clusters can share the same multicast address and port.

D. You may disable multicast on individual cluster members.

E. Multicast traffic is often limited to a single subnet.

Correct Answer: AE

A: WebLogic Server instances in a cluster communicate with one another using two basic network technologies:

*

IP sockets, which are the conduits for peer-to-peer communication between clustered server instances.

*

IP unicast or multicast, which server instances use to broadcast availability of services and heartbeats that indicate continued availability.

E: In many deployments, clustered server instances reside within a single subnet, ensuring multicast messages are reliably transmitted. However, you may want to distribute a WebLogic Server cluster across multiple subnets in a Wide Area Network (WAN) to increase redundancy, or to distribute clustered server instances over a larger geographical area.

Reference: Using WebLogic Server Clusters, Communications In a Cluster http://docs.oracle.com/cd/E11035_01/wls100/cluster/features.html


Question 2:

Which three statements are true about the Change Center in administration console?

A. The Change Center has a link to view the changes made so far.

B. The Change Center is available only in a Production Mode domain.

C. The Change Center has a link to view any servers that need to be restarted.

D. After activating the changes to a server\’s configuration, you must always restart that server.

E. In a Development Mode domain, the configuration lock can be acquired automatically.

F. Changes must always be activated before they can be undone.

Correct Answer: ACE

A: You can view any changes that you have saved, but not yet activated, by clicking the View Changes and Restarts link in the Change Center.

C: The View Changes and Restarts link presents two tabs, Change List and Restart Checklist:

*

The Change List tab presents all changes that have been saved, but not yet activated.

*

The Restart Checklist lists all servers for which non-dynamic changes have been activated, but which require restarts before the changes become effective.

Incorrect:

D: is wrong because dynamic changes usually don\’t require a restart if that is all that was changed. If it were mix of dynamic and non-dynamic changes it would require a restart.

F: is wrong because in production mode the change center has the “undo all changes” button so you don\’t have to activate the changes before you undo them.

Reference: Using the Change Center http://docs.oracle.com/cd/E13222_01/wls/docs103/intro/console.html#wp1122447


Question 3:

View the Exhibit.

You previously deployed an application but later decide to change various configuration parameters, such as timeouts. You access the application\’s Configuration tab in the console and make your configurations, as shown in the Exhibit. In which file does WebLogic record these modifications?

A. config.xml

B. weblogic.xml

C. Application.xml

D. Plan.xml

Correct Answer: D

The following attributes are displayed in the exhibit:

Session Invalidation Interval (in seconds)

Session Timeout (in seconds)

debug-enabled

Maximum in-memory Sessions

These attributes are stored in the weblogic.xml file as the following elements:

invalidation-interval-sec

timeout-secs

debug-enabled

max-in-memory-sessions

Incorrect answers:

A: config.xml does not contain session related information.

The config.xml file consists of a series of XML elements. The Domain element is the top-level element, and all elements in the Domain are children of the Domain element. The Domain element includes child elements, such as the Server,

Cluster, and Application elements. These child elements may have children themselves.

For example, the Server element includes the child elements WebServer, SSL and Log. The Application element includes the child elements EJBComponent and WebAppComponent. Each element has one or more configurable attributes. An attribute has a corresponding attribute in the configuration API. For example, the Server element has a ListenPort attribute, and likewise, the weblogic.management.configuration.ServerMBean class has a ListenPort attribute.

Reference: weblogic.xml Deployment Descriptor Elements


Question 4:

Which two statements are true about Log Filters?

A. Log Filters are created at the domain level.

B. You do not have to lock the configuration to create Log Filters.

C. You can apply a Log Filter to the server log, but not to standard out.

D. The administration console assists in the creation of Log Filter expressions

Correct Answer: AD

A (not B): For any given WebLogic Server instance, you can override the default filter and create a log filter that causes a different set of messages to be written to the domain log file.

Note:

To create and configure a log filter:

1.

If you have not already done so, in the Change Center of the Administration Console, click Lock and Edit (not B) (see Use the Change Center).

2.

In the left pane of the Console, select the name of the active domain in the Domain Structure panel.

3.

On the Configuration: Log Filters page, click New.

4.

On the Create a New Log Filter page, enter a value to identify the filter in the Name field.

5.

Click Finish.

The new log filter appears in the Log Filters table.

6.

To configure a filter expression, in the Log Filters table, click the log filter name.

7.

On the Configuration page, in the Filter Expression text box, enter criteria for qualifying messages.

A filter expression defines simple filtering rules to limit the volume of log messages written to a particular log destination.

See D) below.

8.

Click Save.

The filter and filter expression are listed in the Log Filters table.

D: Log Filter Configuration

Use this page to define a custom log filter to restrict the set of messages that one or more servers send to a message destination, such as the domain log, standard out, server log file, or memory buffer of recent log events.

You can click Edit to type or paste in an expression directly, using WLDF Query Language syntax (see Related Topics, below); or you can click Add Expression to construct an expression by choosing items from lists.

Once you create a filter, you cannot change its name. Instead, you must create a new filter under a different name.

Reference: Administration Console Online Help, Log Filter Configuration Reference: Administration Console Online Help, Create log filters


Question 5:

Indentify two attributes of a JMS server.

A. Target

B. Persistent Store

C. Destination

D. Connection Factory

E. Store and Forward

Correct Answer: AB

A: Target

The target that this JMSServer is deployed to.

See step 5) in the Note below.

B: Persistent Store

The file or database in which this JMS server stores persistent messages. If unspecified, the JMS server uses the default persistent store that is configured on each targeted WebLogic Server instance.

Note: See step 4) below. To create a JMS server:

1.

If you have not already done so, in the Change Center of the Administration Console, click Lock and Edit

2.

In the Administration Console, expand Services > Messaging and select JMS Servers.

3.

On the Summary of JMS Servers page, click New.

Note: Once you create a JMS server, you cannot rename it. Instead, you must delete it and create another one that uses the new name.

4.

On the Create a JMS Server page:

a.

In Name, enter a name for the JMS server.

b.

In Persistent Store, select a pre-configured custom file or JDBC store that will be used by the JMS server or click the Create a New Store button to create a store on the fly.

5.

On the Select Targets page, select the server instance or migratable server target on which to deploy the JMS server. Migratable targets define a set of WebLogic Server instances in a cluster that can potentially host a pinned service, such as a JMS server.

6.

Click Finish

Incorrect answer:

C: There is no such JMS Server destination attribute.

Reference: OTN Home > Oracle WebLogic Server 10.3.5.0 Documentation > Administration Console Online Help > JMS Servers


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