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  5. Oracle WebLogic Server 12c: Administration I Questions and Answers

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Questions # 1:

You want to configure WebLogic Server transactions to be recoverable when a nonclustered managed server crashes, even if that crash is caused by an unrecoverable hardware failure. You want to run the managed server on different hardware, and have it recover the transactions that were in-progress at the time of the crash.

You also want to use the default store for transaction logs.

Which statement is true?

Options:
A.

This scenario is not possible. You must use the JDBC store to recover transactions from a crashed server.

B.

This scenario is not possible. You must use clustered managed servers to recover transactions from a crashed server.

C.

This scenario is common, and so the default configuration of the default store works.

D.

Before the crash, you need to update the path to the default store for the managed server. The path should be to some shared storage location.

E.

After the crash, obtain a copy of the managed server’s default store from the administration server. Move it to the same relative location on the new hardware before starting the managed server there.

Expert Solution
Questions # 2:

Which three statements are true about the Change Center in the Administration Console? (Choose three.)

Options:
A.

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

B.

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

C.

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

D.

Locking the console prevents other privileged users from taking the lock until you release it or activate your changes

E.

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

F.

The Change Center is available only in a Production Mode domain

Expert Solution
Questions # 3:

Consider a data source whose Inactive Connection Timeout has been set to 60 seconds. You suspect that an application is not returning JDBC connections to this data source. In response, you go to the data source’s Monitoring tab in the Administration Console.

Which of the available columns will confirm your suspicions?

Options:
A.

State

B.

Active Connections Current Count

C.

Connection Delay Time

D.

Leaked Connection Count

E.

Current Capacity

Expert Solution
Questions # 4:

View the following file excerpt, which configures HTTP session replication:

< session-descriptor >

< persistent-store-type > replicated

From which file is this excerpt taken?

Options:
A.

Weblogic –application.xml

B.

Weblogic.xml

C.

Session.xml

D.

Config.xml

E.

Web.xml

Expert Solution
Questions # 5:

You create a new Managed Server in your domain by using the administration console. You give it the listen address of 192.0.2.0 and the listen port of 7100.You save and activate the changes.

You use the domain start script to start the new server. It fails. One of the messages in the window in which you can ran the script is:

Server failed to bind to any usable port.

You investigate and see that another process is running on 192.0.2.0 on port 7100.You also find many unused ports at that IP address.

Which two statements are true? (Choose two.)

Options:
A.

It is not an instance of WebLogic Server from this domain running at 192.0.2.0:7100. The administration console does not allow you to create a server at the same listen address and port as one already configured in the domain.

B.

It is an instance of WebLogic Server running at 192.0.2.0:7100. Other processes do not interfere with WebLogic Server.

C.

Changes the port number to an unused one to resolve this issue.

D.

It cannot be the administration server running at 192.0.2.0:7100, because admin servers run on port 7001.

E.

Because this Managed Server has never been started, it does not have a local copy of the configuration. If it did, by using Managed Server Independence, it would be able to switch to an unused port of its configured port was busy.

F.

The port number can stay 7100 if this machine has another IP address and the port is unused at that address.

Expert Solution
Questions # 6:

You are creating and configuring a cluster by using the administration console. Which two statements are true? (Choose two.)

Options:
A.

All servers that will be part of the cluster must be created before the cluster is created.

B.

You must pick the cluster messaging mode.

C.

Even though you create a non-dynamic cluster, you can change it to a dynamic cluster later.

D.

Once the cluster is created, you cannot change its messaging mode.

E.

The administration console does not provide a way to manually migrate singleton services. It must be set up to be done automatically or by using WLST.

Expert Solution
Questions # 7:

Your administration server goes down. One of the managed server of the domain is also currently shut down. This managed server has been successfully started in the past. You cannot bring up the administration server right away, but you need to start the managed server. You run the start script, but the managed server will not start.

Explain this.

Options:
A.

This managed server has disabled Managed Server Independence mode

B.

Managed servers always contact their admin server for the latest configuration. When the admin server is down, a managed server cannot be started.

C.

This managed server must be part of a cluster and the cluster master is also down

D.

This managed server must reside on the same machine as the admin server

E.

The domain must use the embedded LDAP for authentication. Without the admin server, the managed server cannot get updates to its local LDAP store

Expert Solution
Questions # 8:

Which three Administration Console tasks require you to obtain the configuration lock of a production mode domain? (Choose three.)

Options:
A.

Stop an application deployment

B.

Create a new JDBC data source

C.

Change a server’s listen port

D.

Suspend a running server

E.

Add a server to an existing cluster

F.

Create a new administrative user

Expert Solution
Questions # 9:

You have an existing domain and need to add a new managed server to it.

Which three statements are true concerning the creation of managed servers? (Choose three.)

Options:
A.

A server must be assigned a machine

B.

A server must be assigned a listen port

C.

A server’s name cannot be changed after it is created

D.

A server can be associated with a server template

E.

Servers can have duplicate names as long as they have unique ports

F.

A server must be assigned a listen address

Expert Solution
Questions # 10:

A web application is configured for in-memory replication and is deployed to a cluster. This cluster is distributed across two buildings on a university campus. For performance reasons, you require that session replication occur within the building whenever possible.

How do you implement this requirement?

Options:
A.

Disable the dynamic server list in the proxy plug-in.

B.

Configure the cluster to use multicast communication.

C.

Configure the application’s cookies parameters.

D.

Configure each server’s replication group.

Expert Solution
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