Oracle 1Z0-599 Online Practice Questions and Exam Preparation

Oracle 1Z0-599 Online Questions & Answers

• Question 61:

  An airline is building a booking system for its premium and general customers. The goal is to ensure premium members are given higher access priority when user traffic is high.

  What configuration will achieve this goal?

  A. Configure a Work Manager for premium users with a Minimum Thread Constraint.
  B. Configure a Work Manager for premium users with a higher fair-share-request- class.
  C. Configure a Work Manager for premium users with a higher response-time- request-class.
  D. Configure a Work Manager general users with a Maximum Thread Constraint.
  E. Configure a Work Manager for premium users with a custom request-class.
  B. Configure a Work Manager for premium users with a higher fair-share-request- class.

  ---

  fair-share-request-class--Specifies the average thread-use time required to process requests. The default fair share value is 50.

  For example, assume that WebLogic Server is running two modules. The Work Manager for ModuleA specifies a fair-share-request-class of 80 and the Work Manager for ModuleB specifies a fair-share- request-class of 20. During a period of sufficient demand, with a steady stream of requests for each module such that the number requests exceed the number of threads, WebLogic Server will allocate 80% and 20% of the thread-usage time to ModuleA and ModuleB, respectively.

  * Example:

  lowpriority_workmanager low_priority 10

  highpriority_workmanager high_priority 100

  Note:

  * A request class expresses a scheduling guideline that WebLogic Server uses to allocate threads to requests. Request classes help ensure that high priority work is scheduled before less important work, even if the high priority work is submitted after the lower priority work.

  Incorrect:

  Not C: response-time-request-class--Specifies a response time goal in milliseconds. Response time goals are not applied to individual requests. Instead, WebLogic Server computes a tolerable waiting time for requests with that class by

  subtracting the observed average thread use time from the response time goal, and schedules requests so that the average wait for requests with the class is proportional to its tolerable waiting time.

  Not A, D: Not related to thread constraints.

  For example, assume that WebLogic Server is running two modules. The Work Manager for ModuleA specifies a fair-share-request-class of 80 and the Work Manager for ModuleB specifies a fair-share- request-class of 20.

• Question 62:

  Which two options best describe how the Maven Plugin for WebLogic enables WebLogic to be effectively used in a Continuous Integration environment?

  A. execution of unit and integration tests
  B. management of the life cycle of a WebLogic domain including creation, configuration, and server life- cycle management
  C. deployment and undeployment of applications
  D. Java profiling
  A. execution of unit and integration tests
  C. deployment and undeployment of applications

  ---

  Note:

  *

  Apache Maven is a software tool for building and managing Java-based projects. WebLogic Server provides support for Maven through the provisioning of plug-ins that enable you to perform various operations on WebLogic Server from

  within a Maven environment.

  *

  Continuous Integration is a software engineering practice which attempts to improve quality and reduce time to deliver software by applying small, frequent quality control efforts. It is characterized by these key practices:

  Use of a version control system

  All developers commit to the `HEAD' (main code line) every day The product is built on every commit The build must be automated and fast

  Automated deployment to a production-like environment Automated testing Results of all builds are published (so everyone can see who broke the build) Deliverables are easily available (for developers, testers, other stakeholders)

• Question 63:

  Which four steps are involved to use Active Cache Dependency Injection in a WebLogic Java EE application?

  A. Deploy Active Cache shared library
  B. Declare dependency on the shared library
  C. Declare all dependency injection entries
  D. Package tangosol-coherence-override.xml in modules classpath
  E. Package coherence-cache-config.xml in modules classpath
  A. Deploy Active Cache shared library
  B. Declare dependency on the shared library
  C. Declare all dependency injection entries
  E. Package coherence-cache-config.xml in modules classpath

  ---

  Note:

  * Example If you have additional Coherence caches running on Coherence*Web, then you must merge the cache configuration information (typically defined in the coherence-cache-config.xml file) with the session configuration contained in the sessioncache-config.xml file. The cache and session configuration must be consistent across WebLogic Server and Coherence cache servers.

• Question 64:

  You want to use WLST to view metrics for a running domain. Which command should you issue to navigate through the Mbean hierarchy containing the metrics?

  A. runtime ()
  B. runtimeMbeanServer ()
  C. connectRuntime ()
  D. beginRuntime ()
  E. serverRuntime ()
  E. serverRuntime ()

  ---

  Similar to the configuration information, WebLogic Server runtime MBeans are arranged in a hierarchical data structure. When connected to an Administration Server, you access the runtime MBean hierarchy by entering the serverRuntime or the domainRuntime command. The serverRuntime command places WLST at the root of the server runtime management objects, ServerRuntimeMBean; the domainRuntime command, at the root of the domain-wide runtime management objects, DomainRuntimeMBean.

  Reference: WebLogic Scripting Tool, Browsing Runtime MBeans

• Question 65:

  In a Java EE messaging application, one MDB is consuming a lot of memory at high traffic. What configuration should you use to prevent possible out-of-memory error at high traffic and at the same time not losing messages?

  A. Configure a Work Manager for the MDB with a Maximum Thread Constraint.
  B. Configure a Work Manager for the MDB with a Minimum Thread Constraint.
  C. Configure a Work Manager for the MDB with a Maximum Thread Constraint and a Capacity Constraint.
  D. Configure a Work Manager for the MDB with a Minimum Thread Constraint and a Capacity Constraint.
  E. Configure a Work Manager for the MDB with both a Maximum Thread Constraint and Minimum Thread Constraint.
  B. Configure a Work Manager for the MDB with a Minimum Thread Constraint.

  ---

  Note:

  * When to Use Work Managers

  Following are guildelines to help you determine when you might want to use Work Managers to customize thread management:

  / The default fair share is not sufficient.

  This usually ocurrs in situations where one application needs to be given higher priority over another.

  / A response time goal is required.

  / A minimum thread constraint needs to be specified to avoid server deadlock

• Question 66:

  Which action cannot be done in a scripted, automated fashion using WLST?

  A. collecting run-time metrics and sending an email if user-defined thresholds are exceeded
  B. configuring Clusters and Managed Servers
  C. starting Managed Servers using the Node Manager
  D. installing WebLogic binaries on a remote machine using Node Manager
  E. configuring a Managed Server on a remote machine where the Node Manager is installed but no other Managed Servers from the domain exist
  A. collecting run-time metrics and sending an email if user-defined thresholds are exceeded
  B. configuring Clusters and Managed Servers
  C. starting Managed Servers using the Node Manager

  ---

  A: * WLST can connect to individual Managed Servers to retrieve run-time data.

  * The WebLogic Diagnostic Framework (WLDF) is a monitoring and diagnostic framework that can collect diagnostic data that servers and applications generate. You configure WLDF to collect the data and store it in various sources,

  including log records, data events, and harvested metrics.

  B: WLST Online Sample Scripts example scripts include:

  cluster_creation.py

  Connects WLST to an Administration Server, starts an edit session, and creates 10 Managed Servers. It then creates two clusters, assigns servers to each cluster, and disconnects WLST from the server.

  C (not E, not D): You can use WLST to do the following with Node Manager:

  *

  Start a Node Manager.

  *

  Connect to a Node Manager, then use the Node Manager to start and stop servers on the Node Manager machine.

  Reference; Oracle WebLogic Scripting Tool 12c

• Question 67:

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

  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
  B. modifying the configuration of an offline domain
  E. creating and extending domains

  ---

  B: WLST enables you to create a new domain or update an existing domain without connecting to a running WebLogic Server (that is, using WLST offline)--supporting the same functionality as the Configuration Wizard.

  E: With WLST you can

  Creating a Domain (Offline)

  Updating an Existing Domain (Offline)

  Creating a Domain Template (Offline)

  Exporting Diagnostic Data (Offline)

  Stepping Through a Sample Script: Creating a Domain Using WLST Offline Reference: Creating and Configuring WebLogic Domains Using WLST Offline

• Question 68:

  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?

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

  ---

  WebLogic Administrators typically use the Administration Console or the WebLogic Scripting Tool (WLST) to create and deploy (target) JDBC modules. Note:

  *

  (not A) Domain template--defines the full set of resources within a domain, including infrastructure components, applications, services, security options, and general environment and operating system options.

  *

  Extension template--defines the applications and services that you can add to an existing domain, including product component functionality and resources such as JDBC or JMS.

  *

  (not B) Each domain describes its configuration in an XML document that is located in the domain's configuration directory. At run time, each WebLogic Server instance in a given domain creates an in- memory representation of the configuration described in this document.

  The central configuration file for a domain is DOMAIN_NAME/config/config.xml. This file specifies the name of the domain and the configuration of each server instance, cluster, resource, and service in the domain. The file includes references to additional XML files that are stored in subdirectories of theDOMAIN_NAME/config directory. These included files are used to describe major subsystems of WebLogic Server.

  Reference: Configuring WebLogic JDBC Resource

• Question 69:

  In the area of Performance Management and Diagnostics, which feature is supported in Oracle Enterprise Manager 12C?

  A. Search information in logs across multiple domains
  B. View different log information in single console location
  C. Save current performance data as baseline to be used in comparison with future data
  D. Provides single dashboard across multi-tier composite application
  A. Search information in logs across multiple domains

• Question 70:

  In WebLogic 10.3.6 and 12c, transaction logs can optionally write to a JDBC store instead of a file store on the file system. Identify the three benefits as a result of this capability.

  A. simplified disaster recovery architecture and efforts
  B. better performance than writing logs to a file store
  C. common storage of transaction logs with application data
  D. common replication of transaction logs with application data
  E. higher transaction throughput
  A. simplified disaster recovery architecture and efforts
  C. common storage of transaction logs with application data
  D. common replication of transaction logs with application data

  ---

  Comparing File Stores and JDBC-accessible Stores

  The following are some similarities and differences between file stores and JDBC-accessible stores:

  *

  (A) JDBC stores may make it easier to handle failure recovery since the JDBC interface can access the database from any machine on the same network. With the file store, the disk must be shared or migrated.

  *

  The default persistent store can only be a file store. Therefore, a JDBC store cannot be used as a default persistent store.

  *

  Both have the same transaction semantics and guarantees. As with JDBC store writes, file store writes are guaranteed to be persisted to disk and are not simply left in an intermediate (that is, unsafe) cache.

  *

  Both have the same application interface (no difference in application code).

  *

  (not B, not E) All things being equal, file stores generally offer better throughput than a JDBC store.

  / If a database is running on high-end hardware with very fast disks, and WebLogic Server is running on slower hardware or with slower disks, then you may get better performance from the JDBC store.

  *

  File stores are generally easier to configure and administer, and do not require that WebLogic subsystems depend on any external component.

  *

  File stores generate no network traffic; whereas, JDBC stores generate network traffic if the database is on a different machine from WebLogic Server.

  Reference: Configuring Server Environments for Oracle WebLogic Server 12c, Comparing File Stores and JDBC-accessible Stores