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Oracle WebLogic Server 12c: Administration I Questions and Answers

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Question 1

You are using the Configuration Wizard to create a new domain that will host an EJB application without a cluster. Remote EJB clients can therefore take advantage of WebLogic Server’s load balancing and failover capabilities.

However, a proxy server exists between the EJB clients and this new cluster.

Which cluster attribute should you modify in the Configuration Wizard to ensure that external EJB clients are routed correctly through the proxy?

Options:

Messaging Mode

Cluster Address

Broadcast Channel

Replication Channel

Cluster Type

Question 2

Select the two true statements about upgrading WebLogic Server to version 12c (12.1.12). (Choose two.)

Options:

To use the Reconfiguration Wizard, your current WebLogic Server version must be 9.0 or higher.

The Domain Upgrade Wizard is no longer available in 12.1.2.

After running the wizard to update your domain, you must reapply your start script customizations.

You need to update the domain’s administration server files.

Question 3

You plan to install WebLogic Server by using the generic JAR installer in silent mode.

What are two ways to create the required response file? (Choose two.)

Options:

First install or deinstall graphically. There is an option to save a response file.

Use the sample response file in the installation documentation as a template.

First run the Repository Creation Utility. There is an option to save a response file.

The response file is not required. You can answer questions interactively at the command line.

The genetic JAR installer does not have a silent mode, so you do not need a response file when using this installer.

Question 4

Which two statements are true when an Administration Server is compared to a Managed Server? (Choose two.)

Options:

An Administration Server manages the domain configuration

A domain must have at least one of each type of server

An Administration Server keeps a domain log, but a Managed Server does not

A Managed Server keeps a server log, but an Administration Server does not

Java EE applications are deployed only to a Managed Server

Question 5

You require high availability for HTTP sessions in a web application. In addition, you have the following constraints:

• There is little free memory on the machines hosting the cluster.

• HA must be guaranteed even when multiple machines fail simultaneously.

• You are not allowed to update the production databases schema.

Which is the best session persistence option?

Options:

Database persistence

File persistence

In-memory replication

Whole-server migration

Question 6

To support a growing application workload, you need to scale out an existing (nondynamic) cluster. You power up the new hardware and install WebLogic server.

Which two changes are mandatory for you to make to your domain configuration? (Choose two.)

Options:

Create a new deployment plan.

Create a new machine.

Create a new server.

Add a server to the cluster.

Add a server to the machine.

Add the cluster to the machine.

Question 7

Consider a domain with an existing JDBC data source, which connects to an Oracle database. Your database administrator requests that the JDBC connections to this database now specify a different username.

Which data source attribute would you modify to implement this requirement?

Options:

Properties

Credentials

Username

URL

Question 8

You access the Deployments page from the Administration Console. The targets and state of each application are displayed. One web application named web1 is targeted to server1 and is in the NEW state.

Which statement is true?

Options:

web1 is available but has never been accessed

server1 is in standby mode

server1 is not running

web1 is in the process of being deployed to server1

Question 9

As part of troubleshooting an application, you need to analyze the HTTP session count and the server heap size over the past six hours. You are using the Administration Console. You want to view both metrics together and correlate their values.

Which three steps should you take in the Administration Console? (Choose three.)

Options:

Create a custom view.

Start the JVM Runtime view.

Drag each metric onto two charts in the same view.

Access the Monitoring Dashboard.

Click the application’s Monitoring tab.

Question 10

Identify two advantages of using a Single Client Access Name (SCAN) when configuring a GridLink data source. (Choose two.)

Options:

The Fast Connection Failover (FCF) pattern, which allows rapid failure detection, is enabled

The more sophisticated runtime connection load balancing (RLCB) is used; without SCAN, load balancing reverts to a simple round-robin scheme

SCAN is required for the GridLink data source to use an XA driver

The database URL is shorter because it contains one SCAN alias and port as opposed to a host and port for each RAC node

The data source configuration does not need to be updated when new nodes are added to the RAC cluster

Question 11

Which session persistence type is invalid?

Options:

async_replicated

async_jdbc

replicated

async_memory

file

replicated_if_clustered

Question 12

One Managed Server that is part of a large domain throws java.lang.OutOfMemory errors (OOM) occasionally.

You have been monitoring this server with the jvisualVM tool but that didn’t help because the issue occurs infrequently and not a specific scenario. So you decided to force the server to dump the heap memory as soon as an OOM gets thrown in order to analyze the dump file later.

How do you modify the Java HotSpot startup command to enable this feature and save the dump in the directory D:\hprof-dumps\?

Options:

Add -XX:+DumpHeapOnOutOfMemory -XX:DumpPath= D:\hprof-dumps.

Add -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=D:\hprof-dumps.

Add -XX:+DumpHeapOnOutOfMemoryError -XX:HeapPath=D:\hprof-dump.

Add -XX:+HeapDumpOnOutOfMemory -XX:HeapDumpPath=D:\hprof-dumps.

Add -XX:+HeapDumpOnOutOfMemoryError -XX:DumpPath=D:\hprof-dumps.

Add -XX:+HeapDumpOnOutOfMemoryException -XX:HeapDumpPath=D:\hprof-dumps.

Question 13

In memory replication in your cluster seems to be slow. You decide to create a replication channel for your cluster. Which two statements are true? (Choose two.)

Options:

The channel is used for heartbeats so they do not interfere with replication communication

Each server in the cluster must have this named replication channel configured on it

If no replication channel is configured, then sessions are persisted to the file system or the database

The channel can be used for stateful session bean replication

The channel cannot use a secure protocol

Question 14

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

Options:

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

You must pick the cluster messaging mode.

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

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

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.

Question 15

You are using the Embedded LDAP that is supplied by Oracle WebLogic Server. Which three statements are true? (Choose three.)

Options:

The Embedded LDAP can be accessed by an external LDAP viewer

The Embedded LDAP cannot be used in a production environment

The Embedded LDAP uses the file system to store WebLogic security provider data

The Embedded LDAP uses the database to store WebLogic security provider data

The Embedded LDAP can be used to store user, group, security roles and security policies for the WebLogic security providers

Question 16

Consider a domain that includes a Node Manager home directory. One way to enroll each Node Manager with your domain is with the WLST command nmEnroll().

Select the two scenarios where you do not need to use this command to perform the same task? (Choose two.)

Options:

The Node Manager is on the machine where the domain was created by using the Configuration Wizard

You create a managed server template by using the pack utility. Then create the domain by using the unpack utility on the new machine where Node Manager will run

Use the administration console. Select the machine, then the Configuration and Node Manager tabs. Select “Enroll with the Domain.” Save and activate your changes

Use the script enrollNodeManager.sh found under the WEBLOGIC_HOME directory in server/bin

Question 17

Examine the partial server log entry shown below:

####

<> < > < > < 1369013281005 >

Which two statements are true? (Choose two.)

Options:

The server’s name is OracleDS1.

The server’s machine name is host01.

The transaction ID is 001129.

The JDBC subsystem generated the message.

The user’s identity is managed1.

The severity level of the message is Critical.

Question 18

In the certification matrix for your version of WebLogic Server, you find the row for your database and its version. In that row, in the “type of database use” column, it says “application data access only”.

Your database cannot be used __________.

Options:

By the administration server

For internal data storage by WebLogic Server

By a multidata source

In a production environment

By an Enterprise JavaBean

Question 19

Which action should you take to automatically back up the domain configuration when anyone activates a configuration change?

Options:

USE the backup='true' parameter of the activate() command in WLST.

The administration console, select "Follow Configuration changes" in the Shared Preferences for the console.

In the administration console, select "Configuration Archive Enabled" under the general configuration of the domain.

Enabling automatic domain configuration creates backups of the configuration during server boot, not at each activation.

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Oracle 1z0-133 Oracle WebLogic Server 12c: Administration I Exam Practice Test

Oracle WebLogic Server 12c: Administration I Questions and Answers

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