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Q1. You want to migrate an application that was developed for OAS/OC4J to WebLogic. The application uses Oracle Streams Advanced Queuing (AQ). You configured a Foreign JMS Server and Data Source but you are not able to send messages to the AQ destination and see them reach the database. Which two things are missing in this configuration?

A. nothing, there may be a network connection issue

B. a Foreign JMS Connection Factory

C. a JMS Bridge to map the JNDI of the Local JMS Destination to the remote AQ destination

D. a mapping of the Foreign JMS Connection Factory to the Data Source where AQ is configured and installed.

E. Oracle AQ Java EE Shared Libraries not deployed and referenced by your application

Answer: C,E

Explanation: C:

* A WebLogic Messaging Bridge communicates with the configured source and target bridge destinations. For each mapping of a source destination to a target destination, you must configure a messaging bridge instance. Each messaging bridge instance defines the source and target destination for the mapping, a message filtering selector, a QOS, transaction semantics, and various reconnection parameters.

Note:

* In your JMS Foreign Server configuration:

/ Specify oracle.jms.AQjmsInitialContextFactory as the JNDI Initial Context Factory.

/ Configure the JDBC data sources needed for your application environment.


Q2. How can you configure High Availability for interacting with a non-Oracle database using WebLogic?

A. Configure multiple physical data sources and reuse the same JNDI name for each.

B. Use the "compatibility" option of Active GridLink to enable compatibility with non-Oracle databases.

C. Configure a single physical data source for each node in a database cluster and wrap it using Multi Data Source.

D. Configure a Data Source Group that contains a physical connection pool to each node in the database cluster.

Answer:

Explanation: Note:

* A multi data source can be thought of as a pool of data sources. Multi data sources are best used for failover or load balancing between nodes of a highly available database system, such as redundant databases or Oracle Real Application Clusters (Oracle RAC).

* (not B) A single GridLink data source provides connectivity between WebLogic Server and an Oracle Database service, which may include multiple Oracle RAC clusters

* * High Availability Storage Solutions

If you have applications that need access to persistent stores that reside on remote machines after the migration of a JMS server or JTA transaction log, then you should implement one of the following highly-available storage solutions:

/ File-based stores (default or custom)—Implement a hardware solution, such as a dual- ported SCSI disk or Storage Area Network (SAN) to make a file store available from shareable disks or remote machines.

/ JDBC-accessible stores—Configure a JDBC store or JDBC TLOG store and use JDBC to access this store, which can be on yet another server. Applications can then take advantage of any high-availability or failover solutions offered by your database vendor. In addition, JDBC stores support GridLink data sources and multi data sources, which provide failover between nodes of a highly available database system, such as Oracle Real Application Clusters (Oracle RAC).

Reference: Oracle Fusion Middleware Configuring Server Environments for Oracle WebLogic Server 12c, High Availability Storage Solutions


Q3. When you use WebLogic Management Pack EE, which three operations are enabled compared to managing WebLogic Server only through web console?

A. management of many WebLogic Server Domains from a single web console

B. tracking changes in the configuration of WebLogic Domain

C. automation of provisioning process in the new environment

D. checking compliance with the licenses that a customer has

E. visual creation of JDBC DataSource object to Oracle RAC

Answer: A,B,E

Explanation: The WebLogic Server Management Pack EE greatly improves application performance by providing unique functionality to automatically detect performance bottlenecks; quickly diagnose these performance problems, and identify their root cause. Key application performance management features of the pack include the following:

* (A) Manage multiple farms and WebLogic Domains centrally

* Monitor Oracle Coherence Cluster – including all nodes within a cluster, all caches, services, connection managers and connections

* Monitor middleware availability and performance out-of-box; track such data historically, and receive notifications of potential problems

* Obtain real-time, in-depth JVM diagnostics without instrumentation overhead

* Trace transactions across containers as well as to the database

* (E) Analyze call paths and dependencies via graphical, architecture views

* (E) Automatically discover and model dependencies between Java components, frameworks, and web services

Reference: Weblogic Server Management Pack Enterprise Edition


Q4. Identify four valid requests in a RESTful service using JAX-RS.

A. GET

B. PUT

C. UPDATE

D. DELETE

E. POST

F. REMOVE

Answer: A,B,D,E

Explanation: The following principles encourage RESTful applications to be simple, lightweight, and fast:

* Resource identification through URI

* Uniform interface: Resources are manipulated using a fixed set of four create, read, update, delete operations: PUT, GET, POST, and DELETE. PUT creates a new resource, which can be then deleted by using DELETE. GET retrieves the current state of a resource in some representation. POST transfers a new state onto a resource. See Responding to HTTP Methods and Requests for more information.

* Self-descriptive messages

* Stateful interactions through hyperlinks

Reference: The Java EE 6 Tutorial, What Are RESTful Web Services?


Q5. Which technology does WebLogic Server use to look up a WebLogic JMS resource?

A. HTTP

B. JNI

C. JNDI

D. T3

E. LDAP

Answer: C

Explanation: Using JNDI, a JMS client can obtain access to a JMS provider by first looking up a ConnectionFactory. The ConnectionFactory is used to create JMS connections, which can then be used for sending and receiving messages. Destination objects, which represent virtual channels (topics and queues) in JMS, are also obtained via JNDI and are used by the JMS client. The directory service can be configured by the system administrator to provide JMS administered objects so that the JMS clients don't need to use proprietary code to access a JMS provider.

Note:

* The Java Naming and Directory Interface (JNDI) is part of the Java platform, providing applications based on Java technology with a unified interface to multiple naming and directory services.


Q6. When you use WebLogic Management Pack EE, which three operations are enabled compared to managing WebLogic Server only through web console?

A. management of many WebLogic Server Domains from a single web console

B. tracking changes in the configuration of WebLogic Domain

C. automation of provisioning process in the new environment

D. checking compliance with the licenses that a customer has

E. visual creation of JDBC DataSource object to Oracle RAC

Answer: A,B,E

Explanation: The WebLogic Server Management Pack EE greatly improves application performance by providing unique functionality to automatically detect performance bottlenecks; quickly diagnose these performance problems, and identify their root cause. Key application performance management features of the pack include the following:

* (A) Manage multiple farms and WebLogic Domains centrally

* Monitor Oracle Coherence Cluster – including all nodes within a cluster, all caches, services, connection managers and connections

* Monitor middleware availability and performance out-of-box; track such data historically, and receive notifications of potential problems

* Obtain real-time, in-depth JVM diagnostics without instrumentation overhead

* Trace transactions across containers as well as to the database

* (E) Analyze call paths and dependencies via graphical, architecture views

* (E) Automatically discover and model dependencies between Java components, frameworks, and web services

Reference: Weblogic Server Management Pack Enterprise Edition


Q7. For real time event processing, which three clients can you use?

A. Java

B. C++

C. .NET

D. REST

Answer: A,B,C


Q8. An application is using WebLogic JMS Store and Forward to forward messages from a local JMS queue a remote WebLogic JMS destination. You need to determine if the messages are being sent from the local Weblogic Server.

Where do you find information and metrics about Store and Forward components in the

WebLogic Admin Console?

A. JMS Persistent Store

B. JMS Server

C. JMS Distributed Destination

D. JMS Store and Forward

E. Automatic Service Migration

Answer:

Explanation: Note:

* Persistent messages are saved in the persistent store on the sending side until they are successfully forwarded to and acknowledged by the receiving side.


Q9. WebLogic Node Manager can be used to manage the life cycle of WebLogic servers. WebLogic Node Manager is installed and started .

A. Per Machine

B. Per Domain

C. Per Managed Server

D. Per Admin Server

Answer: A

Explanation: A Node Manager process is not associated with a specific WebLogic domain but with a

machine. You can use the same Node Manager process to control server instances in any WebLogic Server domain, as long as the server instances reside on the same machine as the Node Manager process. Node Manager must run on each computer that hosts WebLogic Server instances—whether Administration Server or Managed Server—that you want to control with Node Manager.

Reference: Overview of WebLogic Server Domains


Q10. You want to migrate an application that was developed for OAS/OC4J to WebLogic. The application uses Oracle Streams Advanced Queuing (AQ). You configured a Foreign JMS Server and Data Source but you are not able to send messages to the AQ destination and see them reach the database. Which two things are missing in this configuration?

A. nothing, there may be a network connection issue

B. a Foreign JMS Connection Factory

C. a JMS Bridge to map the JNDI of the Local JMS Destination to the remote AQ destination

D. a mapping of the Foreign JMS Connection Factory to the Data Source where AQ is configured and installed.

E. Oracle AQ Java EE Shared Libraries not deployed and referenced by your application

Answer: C,E

Explanation: C:

* A WebLogic Messaging Bridge communicates with the configured source and target bridge destinations. For each mapping of a source destination to a target destination, you must configure a messaging bridge instance. Each messaging bridge instance defines the source and target destination for the mapping, a message filtering selector, a QOS, transaction semantics, and various reconnection parameters.

Note:

* In your JMS Foreign Server configuration:

/ Specify oracle.jms.AQjmsInitialContextFactory as the JNDI Initial Context Factory.

/ Configure the JDBC data sources needed for your application environment.