1z0-134 Oracle WebLogic Server 12c: Advanced Administrator II Questions and Answers

The Archive component of the WebLogic Diagnostics Framework (WLDF) captures and persists all data events, log records, and metrics collected by WLDF from server instances and applications running on them.

The Archive provides access interfaces so that the Accessor may expose any of the persisted historical data including logged event data and persisted metrics.

A simple way to failover a client connected to a failed distributed destination is to write reconnect logic in the client code to connect to the distributed destination after catching onException.

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.

The WebLogic Server Default Domain Extension Template filename is wls_default.jar. It extends the Basic WebLogic Server domain with a web application designed to guide new users through an introduction to WebLogic Server.

setOption sets options related to a domain creation or update.

Syntax: setOption(optionName, optionValue)

Option names include:

* JavaHome—Home directory for the JVM to be used when starting the server. The default for this option depends on the platform on which you install WebLogic Server. Update JavaHome to point to the jre directory for the JDK that you are using for WebLogic Server.

* DomainName—Name of the domain.

* ServerStartMode—Mode to use when starting the server for the newly created domain. This value can be dev (development) or prod (production). This option defaults to dev.

B: Distributing an application copies deployment files to target servers and places the application in a prepared state. You can then start the application in Administration mode, which restricts access to the application to a configured Administration channel so you can perform final testing without opening the application to external client connections or disrupting connected clients.

C: Distributing an application prepares it for deployment by copying its deployment files to all target servers and validating it. After you distribute an application, you can start it in Administration mode, which restricts access to the application to a configured Administration channel and allows you to distribute the application to a production environment (or distribute a new version of an application) without opening the application to external client connections.

E: While in Administration mode, you can connect to an application only via a configured Administration channel. This allows you to perform final (“sanity”) checking of the application directly in the production environment without disrupting clients. After performing final testing, you can either undeploy the application to make further changes, or start the application to make it generally available to clients.

A: Store-and-Forward (SAF) Agents cannot be targeted to a Dynamic or Mixed cluster. You can target SAF Agents to Configured clusters using the default store.

D: Targeting a messaging bridge to a mixed or dynamic cluster is not supported.

A: The JMSRedelivered property specifies a flag set when a message is redelivered because no acknowledge was received. This flag is of interest to a receiving application.

If set, the flag indicates that JMS may have delivered the message previously because one of the following is true:

* The application has already received the message, but did not acknowledge it.

* The session's recover() method was called to restart the session beginning after the last acknowledged message.

A connection factory supports concurrent use, enabling multiple threads to access the object simultaneously.

A session and its message producers and consumers can only be accessed by one thread at a time (i.e. the access must be synchronized). Their behavior is undefined if multiple threads access them simultaneously.

B Load balancing is the even distribution of jobs and associated communications across the computing and networking resources in your environment.

C: In a WebLogic Server cluster, application processing can continue when a server instance fails.

E: Migration in WebLogic Server is the process of moving a clustered WebLogic Server instance or a component running on a clustered instance elsewhere if failure occurs. This is called Whole-server migration.

In most of the architectures, the SSL is terminated at the hardware load balancer for performance reasons and allows the internal traffic to use HTTP for communication.

When a Managed Server starts, it tries to contact the Administration Server to retrieve its configuration information. If a Managed Server cannot connect to the Administration Server during startup, it can retrieve its configuration by reading configuration and security files directly. A Managed Server that starts in this way is running in Managed Server Independence (MSI) mode