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Oracle WebLogic Server 12c Essentials Question and Answers

Oracle WebLogic Server 12c Essentials

Last Update Apr 28, 2024
Total Questions : 91

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Questions 1

You want to capture WebLogic internal events correlated with JVM events for viewing offline. What three actions must you take to enable this within WebLogic?

Options:

A.  

Run WebLogic in a JRockit JVM and ensure the Flight Recorder is enabled.

B.  

Configure the WebLogic Diagnostic Framework Event Volume to Low, Medium, or High depending on the type of events you want to capture.

C.  

Configure the WebLogic Diagnostic Framework bridge to send events to the JRockit Flight Recording.

D.  

Take a dump from the default recording or create a new recording for the time period you want to capture.

Discussion 0
Questions 2

A customer wants to send JMS messages to a remote WebLogic server from a Java SE application over an unreliable network connection. Which feature of WebLogic JMS will enable the customer to send messages from a Java SE client to a JMS destination that is not always easily reached?

Options:

A.  

SAF Target

B.  

SAF Imported Destination

C.  

SAF Client

D.  

SAF Server

E.  

Distributed SAF JMS

Discussion 0
Questions 3

You deploy more than one application to the same WebLogic container. The security is set on JavaEE level and all deployed JavaEE applications use the same security roles.

What is your recommendation for architecture with those requirements?

Options:

A.  

Combine all applications into a single one.

B.  

Define global roles on the WebLogic Domain level.

C.  

Use Ms Active Directory to keep the roles there.

D.  

Use Oracle Identity and Access Management solution to simplify the management.

E.  

Keep role mapping in the external WebLogic Role Mapped developed for that solution.

Discussion 0
Questions 4

Which two tasks can be performed when WLST is in OFFLINE mode?

Options:

A.  

modifying the configuration of an online domain

B.  

modifying the configuration of an offline domain

C.  

viewing runtime performance data in ONLINE mode

D.  

viewing runtime performance data in OFFLINE mode

E.  

creating and extending domains

Discussion 0
Questions 5

A customer needs to ensure that the number of threads servicing an application does not exceed the number of database connections available to the application.

What step must you take to address this situation?

Options:

A.  

Configure a Max Threads Constraint and add your application to the list of applications for the Constraint.

B.  

Configure a Work Manager with a Maximum Threads Constraint tied to the Connection Pool and configuration your application to use the Work Manager.

C.  

Configure a Work Manager with a Minimum Threads Constraint tied to the Connection Pool and configure your application to use the Work Manager.

D.  

Configure a global MaxThreads constraint and target it to the server or clusters where your application is deployed.

E.  

Configure the startup parameter "-Dwls-maxThreads" to be the same as the number of database connections configured.

Discussion 0
Questions 6

Identify three reasons that explain why assigning more than one managed serve achieve better performance than running one managed server with more resources?

Options:

A.  

Thread management inside the JVM process might be less effective than context switching between processes on the OS level. It is better to combine both these technologies to achieve full saturation of resources.

B.  

Current CPUs are multicore units. So starting managed servers in the amount of physical cores and pinning them 1:1 to cores will always get the best performance.

C.  

By a combination of prioritization of processes on the OS level and Work Manager in WLS, one could tune the whole environment more precisely.

D.  

Assigning more than one managed server to hardware will never bring better performance.

E.  

More instances means more connections to databases, so one could serve more concurrent calls on the database level. This is primarily why this approach will give better performance numbers.

F.  

Depending on the profile of the application, having more JVMs with smaller heaps will lead to more predictable response times than fewer JVMs with a large heap.

Discussion 0
Questions 7

You are configuring a JMS server with a need for load balancing the messages. To achieve the load balance you should _______and _______.

Options:

A.  

use regular queues and topics

B.  

use distributed queues and topics

C.  

not use subdeployments

D.  

disable server affinity

E.  

use message paging

Discussion 0
Questions 8

Which three JVM options would you add to investigate performance issues in a Hot-Spot JVM?

Options:

A.  

-xx:+PrintGCDetails

B.  

-xx:+PrintGCTimeStamps

C.  

-xx:+HandlePromotionFailure

D.  

-verbose:gc

E.  

-server

Discussion 0
Questions 9

A highly available WebLogic cluster in UNIX is configured for automatic server migration. Node Managed is configured on both machines to start managed servers.

How should you simulate a managed server failure to test whether automatic server migration is working?

Options:

A.  

Shut down the managed server from the WebLogic console.

B.  

Shut down the managed server using the WLST command through Node Manager.

C.  

Run "kill -9" once to kill the managed server process.

D.  

Run "kill -9" to kill the managed server process, and run "kill -9" one more time if the managed server is restarting.

Discussion 0
Questions 10

When your WebLogic Server solution needs to be scaled out with additional capacity and you don’t want to add additional hardware, which three techniques should you us?

Options:

A.  

Assign more than one managed server to a physical hardware that allows better CPU utilization.

B.  

Assign more than one application to one managed server to better utilize threads within a single JVM process.

C.  

Assign the same application to more than one managed server to load balance requests between servers.

D.  

Assign the same heap size to the managed server across the cluster for easier control of memory footprint

E.  

Create a virtualized environment with hypervisor for an easier solution

Discussion 0
Questions 11

A customer has a WebTrade application that initially uses the embedded LDAP to authenticate users. To enhance security, the customer decides to use OAM to authenticate some of the users against an external LDAP store. For this to work, a customer configured an OAMAuthenticator, but was not sure what to select for the Control Flag. What Control Flag should the customer choose?

Options:

A.  

OPTIONAL

B.  

REQUISITE

C.  

REQUIRED

D.  

SUFFICIENT

E.  

MANDATORY

Discussion 0
Questions 12

A WebLogic team is developing an enterprise application from their desktop WebLogic environment. All development systems are connected to the same eight data sources for testing.

As a WebLogic Administrator supporting this team, which two actions should you perform to free the developers from creating and configuring all the data sources on their desktop WebLogic environment?

Options:

A.  

Provide the team with a WebLogic domain template with the testing data sources configured.

B.  

Provide the development team with a preconfigured domain archive file.

C.  

Provide the development team with the [datasource] -jdbc.xml file to overwrite their local copy.

D.  

Create the data sources on behalf each of the developer.

E.  

Provide the development team with WLST scripts to create and configure the testing data sources.

Discussion 0
Questions 13

Identify four features of WebLogic that provide value above and beyond a simple Java EE container.

Options:

A.  

Active GridLink for RAC

B.  

support for enterprise Web Services standards beyond Java EE specification

C.  

Integration with Enterprise Manager

D.  

market leading performance

E.  

Java EE6 Specification Support

F.  

Java SE 7 support

Discussion 0
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