Oracle 1Z0-599 Online Practice Questions and Exam Preparation

Oracle 1Z0-599 Online Questions & Answers

• Question 21:

  You completed the development of a new application and want to create a new domain in a new environment for functional testing. You want to have the same settings for your new domain as your old domain, with the option of changing the

  configuration in the new target environment.

  Which two actions should you execute?

  A. Use the introspect () command in WLST to gather the configuration information from the original domain.
  B. Use pack/unpack to transfer the domain from one machine to another.
  C. Create a domain template from the original domain using the Domain Template Builder and use the Configuration Wizard to create a new domain from the template.
  D. Use the Admin Console of the original domain to create a domain template from the original domain and use the Configuration Wizard to create a new domain from the template.
  C. Create a domain template from the original domain using the Domain Template Builder and use the Configuration Wizard to create a new domain from the template.

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  Using the Domain Template Builder to Create Domain Templates

  To create a domain, start the Configuration Wizard and choose a domain configuration template.

  Reference: Creating and Configuring Domains Using the Configuration Wizard

• Question 22:

  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?

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

  ---

  To manage work in your applications, you define one or more of the following Work Manager components:

  Fair Share Request Class:

  Response Time Request Class:

  Min Threads Constraint:

  Max Threads Constraint:

  Capacity Constraint

  Context Request Class:

  Note:

  *

  max-threads-constraint--This constraint limits the number of concurrent threads executing requests from the constrained work set. The default is unlimited. For example, consider a constraint defined with maximum threads of 10 and shared by 3 entry points. The scheduling logic ensures that not more than 10 threads are executing requests from the three entry points combined. A max-threads-constraint can be defined in terms of a the availability of resource that requests depend upon, such as a connection pool. A max-threads-constraint might, but does not necessarily, prevent a request class from taking its fair share of threads or meeting its response time goal. Once the constraint is reached the server does not schedule requests of this type until the number of concurrent executions falls below the limit. The server then schedules work based on the fair share or response time goal.

  *

  WebLogic Server prioritizes work and allocates threads based on an execution model that takes into account administrator-defined parameters and actual run-time performance and throughput.

  Administrators can configure a set of scheduling guidelines and associate them with one or more applications, or with particular application components.

  *

  WebLogic Server uses a single thread pool, in which all types of work are executed. WebLogic Server prioritizes work based on rules you define, and run-time metrics, including the actual time it takes to execute a request and the rate at which requests are entering and leaving the pool.

  The common thread pool changes its size automatically to maximize throughput. The queue monitors throughput over time and based on history, determines whether to adjust the thread count. For example, if historical throughput statistics indicate that a higher thread count increased throughput, WebLogic increases the thread count. Similarly, if statistics indicate that fewer threads did not reduce throughput, WebLogic decreases the thread count. This new strategy makes it easier for administrators to allocate processing resources and manage performance, avoiding the effort and complexity involved in configuring, monitoring, and tuning custom executes queues.

  Reference: Using Work Managers to Optimize Scheduled Work

• Question 23:

  Integration between _______ multidata sources and _____ is defined as the Grid Link for RAC.

  A. Oracle WebLogic Server; Oracle Database
  B. Oracle WebLogic Server clusters; Oracle Database
  C. Oracle WebLogic Server clusters; Oracle Database RAC
  D. Oracle OC4J; Oracle Database RAC
  E. Oracle WebLogic Server; Oracle OC4J
  C. Oracle WebLogic Server clusters; Oracle Database RAC

  ---

  The WebLogic Server JDBC subsystem has supported Oracle RAC since WLS version 8.1 SP5, originally developed for Oracle9i RAC. This support is based on a particular type of data source configuration, called a multi data source. A multi data source is a data source abstraction over one or more individual data sources. It serves JDBC connections from each of the member data sources according to a specified policy2. A RAC multi data source configuration requires that each member data source obtain connections to a particular RAC instance, as illustrated in the following diagram of a three-node RAC cluster configuration.

  

  Reference: Oracle WebLogic Server Active GridLink for Oracle Real Application Clusters(RAC)

• Question 24:

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

  A. GET
  B. PUT
  C. UPDATE
  D. DELETE
  E. POST
  F. REMOVE
  A. GET
  B. PUT
  D. DELETE
  E. POST

  ---

  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?

• Question 25:

  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 an architecture with those requirement

  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.
  B. Define global roles on the WebLogic Domain level.

  ---

  Note:

  * Types of Security Roles: Global Roles and Scoped Roles

  There are two types of security roles in WebLogic Server:

  / A global security role can be used in any security policy. Oracle provides several default global roles that you can use out of the box to secure your WebLogic resource

  / A scoped role can be used only in policies that are defined for a specific instance of a WebLogic resource (such as a method on an EJB or a branch of a JNDI tree). You might never need to use scoped roles. They are provided for their flexibility and are an extra feature for advanced customers.

  Incorrect:

  Not E: Role mapping is the process whereby principals (users or groups) are dynamically mapped to security roles at runtime. In WebLogic Server, a Role Mapping provider determines what security roles apply to the principals stored a

  subject when the subject is attempting to perform an operation on a WebLogic resource. Because this operation usually involves gaining access to the WebLogic resource, Role Mapping providers are typically used with Authorization

  providers.

• Question 26:

  A customer has a critical, performance-sensitive web application that connects to a multimode Oracle RAC database. Which feature of WebLogic can provide signification benefit?

  A. The Web Session Affinity feature of Active GridLink for RAC.
  B. WebLogic Clustering
  C. The Transaction Affinity feature of Active GridLink for RAC
  D. Coherence*Web Session Replication
  C. The Transaction Affinity feature of Active GridLink for RAC

  ---

  Active GridLink for Oracle RAC In Oracle WebLogic Server 10.3.4, a single data source implementation has been introduced to support an Oracle RAC cluster. It responds to FAN events to provide Fast Connection Failover (FCF), Runtime Connection Load-Balancing (RCLB), and RAC instance graceful shutdown. XA affinity is supported at the global transaction Id level. The new feature is called WebLogic Active GridLink for RAC; which is implemented as the GridLink data source within WebLogic Server.

  Note:

  * The WebLogic Server JDBC subsystem has supported Oracle RAC since WLS version 9.0, originally developed for Oracle9i RAC. This support is based on a particular type of data source configuration, called a multi data source. A multi data source is a data source abstraction over one or more individual data sources. It serves JDBC connections from each of the member data sources according to a specified policy. A RAC multi data source configuration requires that each member data source obtain connections to a particular RAC instance.

  Reference: How-To: Use Oracle WebLogic Server with a JDBC GridLink Data Source

• Question 27:

  Active Cache is the integration of Coherence and WebLogic Server. Which component is NOT part of this integration?

  A. Coherence*Web
  B. Coherence*Extend
  C. TopLink Grid with Coherence
  D. Coherence cluster lifecycle management in WebLogic Server
  E. Named cache dependency Injection
  B. Coherence*Extend

  ---

  WebLogic Server includes features that allow deployed applications to easily use Coherence data caches, and seamlessly incorporate Coherence*Web (not A) for session management and TopLink Grid (not C) as an object-to-relational persistence framework. Collectively, these features are referred to as ActiveCache.

  ActiveCache is employed by applications running on WebLogic Server and provides replicated and distributed caching services that make an application's data available to all servers in a Coherence data cluster. New features in this release provide direct access by applications to data caches, either through resource injection or component-based JNDI lookup, and let you display, monitor, create, and configure Coherence clusters using the WebLogic Server Administration Console and WLST.

  Reference: Oracle Coherence Tutorial for Oracle Coherence

• Question 28:

  What is the architectural benefit of keeping WebLogic Server transaction log in the database?

  A. Oracle does not allow replicating files between data centers, so keeping transaction log in database allows for replication.
  B. Many transactions in WebLogic are database centric, so keeping log in database makes Two Phase Commit protocol possible.
  C. It obviates the need to keep in sync two replication technologies (file and database) between data centers. The single replication technology is used for frequently changing data.
  D. Transaction log in a file system is extremely slow so it cannot be efficiently replicated.
  C. It obviates the need to keep in sync two replication technologies (file and database) between data centers. The single replication technology is used for frequently changing data.

  ---

  You can configure a JDBC TLOG store to persist transaction logs to a database, which provides the following benefits:

  *

  Leverages replication and HA characteristics of the underlying database.

  *

  Simplifies disaster recovery by allowing the easy synchronization of the state of the database and TLOGs.

  *

  Improved Transaction Recovery service migration as the transaction logs to do not need to be migrated (copied) to a new location.

  *

  You can configure a JDBC TLOG store to persist transaction logs to a database, which allows you to leverage replication and HA characteristics of the underlying database, simplify disaster recovery, and improve Transaction Recovery service migration.

  incorrect:

  not B: Read-only, One-phase Commit Optimization requires Oracle DB 11.1.0.7.3PSU or above.

• Question 29:

  What is the name of the WebLogic specific deployment descriptor of Java Enterprise Application?

  A. application.xml
  B. weblogic.xml
  C. web.xml
  D. weblogic-application.xml
  E. config.xml
  B. weblogic.xml

  ---

  The WebLogic Server-specific deployment descriptor weblogic.xml. If your Web application does not contain a weblogic.xml deployment descriptor, WebLogic Server automatically selects the default values of the deployment descriptor

  elements.

  Note:

  A Web archive (WAR file) contains the files that make up a Web application. A WAR file is deployed as a unit on one or more WebLogic Server instances. A WAR file deployed to WebLogic Server always includes the following files:

  *

  One servlet or Java Server Page (JSP), along with any helper classes.

  *

  An optional web.xml deployment descriptor, which is a Java EE standard XML document that describes the contents of a WAR file.

  *

  A weblogic.xml deployment descriptor, which is an XML document containing WebLogic Server-specific elements for Web applications.

  *

  A WAR file can also include HTML or XML pages and supporting files such as image and multimedia files.

  Reference: weblogic.xml Deployment Descriptor Elements

• Question 30:

  You have a domain that was created and configured with WebLogic 10.3.5. You want to upgrade the domain to use WebLogic 12c. Which Oracle tool must you use to upgrade your domain?

  A. Oracle WebLogic Domain Upgrade tool
  B. Smart Update
  C. Smart Upgrade
  D. No tool required, just install WebLogic 12c, update the domain to point to the new WebLogic installation and start your domain.
  E. JDeveloper
  D. No tool required, just install WebLogic 12c, update the domain to point to the new WebLogic installation and start your domain.

  ---

  Note:

  You can use the 12.1.1 WebLogic Upgrade Wizard to upgrade domains created in WebLogic Server 8.1. You can also use the WebLogic Upgrade Wizard to upgrade a WebLogic domain created in WebLogic Server 9.x or 10.x to 12.1.1, but

  this is optional.