Oracle 1Z0-599 Online Practice Questions and Exam Preparation

Oracle 1Z0-599 Online Questions & Answers

• Question 81:

  A customer claims that while redeploying a web application in the production system all their customers are having to log in again. What do you recommend?

  A. Sessions can't be preserved when redeploying applications. The customer needs to consider redeployment during late nights when the traffic is low.
  B. Change the flag responsible for the development mode of their environment. In the production mode, all sessions are preserved while redeploying application.
  C. Change Hotspot to JRockit. Sessions can't be preserved on HotSpot when redeploying application.
  D. Use flag -version when redeploying the application. This will switch on the Side By Side deployment feature and preserve existing sessions.
  E. Open a service request with Oracle Support. This is unexpected behavior. Sessions are preserved without any extra settings.
  D. Use flag -version when redeploying the application. This will switch on the Side By Side deployment feature and preserve existing sessions.

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  Restrictions on Production Redeployment Updates

  WebLogic Server can host a maximum of two different versions of an application at one time.

  Note:

  *

  When you redeploy a new version of an application, you cannot change: An application's deployment targets An application's security model A Web application's persistent store settings

  To change any of the above features, you must first undeploy the active version of the application. Incorrect:

  *

  (not A)

  Production redeployment enables you to update and redeploy an application in a production environment without stopping the application or otherwise interrupting the application's availability to clients. Production redeployment saves you the

  trouble of scheduling application downtime, setting up redundant servers to host new application versions, manually managing client access to multiple application versions, and manually retiring older versions of an application.

  *

  (not C) Not dependant on whether the application is JRockit or Hotspot.

  *

  (not E)

  The production redeployment strategy is supported for:

  Standalone Web Application (WAR) modules and enterprise applications (EARs) whose clients access the application via a Web application (HTTP).

  Enterprise applications that are accessed by inbound JMS messages from a global JMS destination, or from inbound JCA requests.

  All types of Web Services, including conversational and reliable Web Services, but not 8.x Web Services.

  Production redeployment is not supported for:

  Standalone EJB or RAR modules. If you attempt to use production redeployment with such modules, WebLogic Server rejects the redeployment request. To redeploy such modules, remove their version identifiers and explicitly redeploy the

  modules.

  Applications that use JTS drivers. For more information on JDBC application module limitations, see JDBC Application Module Limitations in Configuring and Managing JDBC Data Sources for Oracle WebLogic Server.

  Applications that obtain JDBC data sources via the DriverManager API; in order to use production redeployment, an application must instead use JNDI to look up data sources.

  Applications that include EJB 1.1 container-managed persistence (CMP) EJBs. To use production redeployment with applications that include CMP EJBs, use EJB 2.x CMP instead of EJB 1.1 CMP.

  Reference: Reference; Deploying Applications to Oracle WebLogic Server 12c, Redeploying Applications in a Production Environment

• Question 82:

  Identify three advantages of Active GridLink for RAC over multidata source.

  A. isolates WebLogic from RAC changes
  B. has a simple configuration
  C. enables statement caching
  D. performs faster failure detection and failover
  E. is supported in WebLogic Domain Templates
  A. isolates WebLogic from RAC changes
  B. has a simple configuration
  D. performs faster failure detection and failover

  ---

  A, B: With Active GridLink for RAC, WebLogic instances are isolated from RAC configuration changes, and DBAs only need to contend with a single data source rather than multiple data sources.

  D: Active GridLink for RAC distributes work based on different backend node capacities, automatically detecting and adapting to overworked nodes and hangs. It enables smart load balancing across RAC nodes. This makes it easier to route traffic around node failures, enhancing availability and performance.

  Reference: Introducing WebLogic Server 12c

• Question 83:

  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
  A. JMS Persistent Store

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  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.

• Question 84:

  Identify the three processes that customers can choose for patching WebLogic Server.

  A. Download patches from My Oracle Support and manage them using Smart Update.
  B. Use Enterprise Manager to download patches from My Oracle Support and apply patches to WebLogic.
  C. Download patches from My Oracle Support and manually modify the classpath of the application server (though it is not recommended).
  D. Download patches from My Oracle Support and apply them using the WebLogic Admin Console.
  E. Use the Admin Console to connect to My Oracle Support and download patches and then target them to the domain.
  A. Download patches from My Oracle Support and manage them using Smart Update.
  B. Use Enterprise Manager to download patches from My Oracle Support and apply patches to WebLogic.
  C. Download patches from My Oracle Support and manually modify the classpath of the application server (though it is not recommended).

  ---

  A: Oracle Smart Update is a standalone Java application that is automatically installed in the Middleware home utils/bsu directory. Smart Update simplifies the process of applying patches to your WebLogic Server installation. When support makes a patch available for an installed version of WebLogic Server, you download the patch from My Oracle Support and then use Oracle Smart Update to apply it to your installation. Smart Update organizes all available updates for you, and has several features that allow a great deal of customizing in the way various patches are applied and managed in your environment.

  B: As part of a new Enterprise Manager system, the installation wizard does the following:

  * Oracle My Oracle Support Management Plug-In etc.

  C: Applying patch from server start script:

  After downloading the patch (jar file) follow the below steps:

  -Stop your server.

  - Then take the path of the folder which has the CRxxxxxx_xxxmpx.jar file and copy it in the CLASSPATH of setDomainEnv.cmd which is in

  (/user_projects/domains//bin/setDomainEnv.cmd)

  For example, the script would look something like this:

  set CLASSPATH=%PRE_CLASSPATH%;%WEBLOGIC_CLASSPATH%;

  C:\extra\my_projects\doc\CR\CR218639_920mp3.jar;C:\extra\my_projects\doc \CR\ CR360676_920mp3.jar;C:\extra\my_projects\doc\CR\CR367966_920mp3.jar;

  C:\extra\my_projects\doc\CR\CR368155_920mp3.jar;C:\extra\my_projects\doc\CR\CR370311_ 920mp3.jar

  -Re-start your server.

  -You should see the patch applied in the stdout file.

• Question 85:

  A customer has a web application with HTTP Sessions that need to be replicated to a backup site that is more than 100 miles away from the primary site, connected over the Internet. Which type of session replication in WebLogic is recommended?

  A. MAN Replication
  B. WAN Replication
  C. Synchronous Replication
  D. Asynchronous Replication
  E. Database Replication
  D. Asynchronous Replication

  ---

  WAN HTTP Session State Replication

  Resources in a wide area network (WAN) are frequently spread across separate geographical regions. In addition to requiring network traffic to cross long distances, these resources are often separated by multiple routers and other network

  bottle necks. Network communication in a WAN generally has higher latency and slower interconnect. Slower network performance within a WAN makes it difficult to use a synchronous replication mechanism like the one used within a MAN.

  WebLogic Server provides failover across clusters in WAN by using an asynchronous data replication scheme.

  Note:

  HTTP Session State Replication

  Weblogic Server uses two methods for replicating HTTP session state across clusters:

  in-memory replication

  *

  Using in-memory replication, WebLogic Server copies a session state from one server instance to another. The primary server creates a primary session state on the server to which the client first connects, and a secondary replica on

  another WebLogic Server instance in the cluster. The replica is kept up-to-date so that it may be used if the server that hosts the servlet fails.

  *

  JDBC-based persistence

  In JDBC-based persistence, WebLogic Server maintains the HTTP session state of a servlet or JSP using file-based or JDBC-based persistence.

  JDBC-based persistence is also used for HTTP session state replication within a Wide Area Network (WAN).

• Question 86:

  Which WebLogic edition bundles JRockit Real Time?

  A. WebLogic Server Standard Edition
  B. WebLogic Server Enterprise Edition
  C. WebLogic Server Suite
  D. WebLogic Server Grid Edition
  E. WebLogic Server Cloud Edition
  C. WebLogic Server Suite

• Question 87:

  What does the Web Session Affinity feature of Active GridLink for RAC provide?

  A. It mandates that HTTP sessions must be stored in an Oracle RAC database for the highest throughput and availability.
  B. It pins a connection to the thread associated with a web session such that subsequent connection reservations are significantly faster.
  C. It stores a reference to the connection associated with an HTTP session in the session object.
  D. It allows developers to modify how their web application reserves and releases database connections to allow enhanced performance.
  E. It provides improved performance by associating a database connection with an HTTP session.
  E. It provides improved performance by associating a database connection with an HTTP session.

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  Session Affinity Policy

  Web applications where a user session has back-to-back online transaction processing (OLTP) have better performance when repeated operations against the same set of records are processed by the same RAC instance. Business

  applications such as online shopping and online banking are typical examples of this pattern.

  A GridLink data source uses the Session Affinity policy to ensure all the data base operations for a web session, including transactions, are directed to the same Oracle RAC instance of a RAC cluster.

  Note:

  The context is stored in the HTTP session. It is up to the application how windows (within a browser or across browsers) are mapped to HTTP sessions.

  Note 2:

  *

  GridLink Affinity WebLogic Server GridLink affinity policies are designed to improve application performance by maximizing RAC cluster utilization. A GridLink data source monitors RAC load balancing advisories (LBAs) using the AffEnabled attribute to determine if RAC affinity is enabled for a RAC cluster. The first connection request is load balanced using Runtime Connection Load- Balancing (RCLB) and is assigned an Affinity context. All subsequent connection requests are routed to the same Oracle RAC instance using the Affinity context of the first connection until the session ends or the transaction completes.

  *

  Session Affinity

  

  Reference; Configuring and Managing JDBC Data Sources for Oracle Weblogic server 12c, Using GridLink Data Sources

• Question 88:

  What type of Java EE application can be upgraded to WebLogic 12c using the Smart Upgrade tool?

  A. GlassFish
  B. iAS
  C. WebLogic Server 11g
  D. JBoss
  B. iAS

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  Note:

  *

  iAS: Oracle Application Server

  *

  Oracle WebLogic Server SmartUpgrade is one several Oracle software tools that can help you upgrade your entire Oracle Application Server or Oracle WebLogic Server environment to Oracle Fusion Middleware 11g.

• Question 89:

  A customer stores environmental settings in the deployment descriptors of an application. Whenever they promote the application version from testing to the production environment, they need to open the archive and modify the deployment descriptor. This process is against their security policy.

  What approach should you recommend to leverage WebLogic features such that they do not have to modify the application archive for different environments?

  A. Keep environmental data in the global settings of domain and the application can read it from the domain where it runs.
  B. Keep environmental data in Deployment Plan XML files. It allows you to change parameters in the deployment descriptor without opening the archive file.
  C. Keep environmental data in the database because it is the most effective way of parametrizing the environment.
  D. Keep archive in exploded format so the customer does not have to open the archive files.
  E. Eliminate all environmental settings from the application. There should not to be any environmental settings in the application.
  B. Keep environmental data in Deployment Plan XML files. It allows you to change parameters in the deployment descriptor without opening the archive file.

  ---

  WebLogic Server uses the standard J2EE web.xml deployment descriptor for defining a Web Application. Some applications also require the WebLogic-specific deployment descriptor, weblogic.xml. You use these deployment descriptors to define components and operating parameters for a Web Application. Deployment descriptors are standard text files, formatted using XML notation. You package them in the Web Application.

  Reference: Overview of Web Application Deployment Descriptors

• Question 90:

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

  A. use regular queues and topics
  B. use distributed queues and topics
  C. not use subdeployments
  D. disable server affinity
  E. use message paging
  B. use distributed queues and topics
  C. not use subdeployments

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  Load Balancing for JMS

  WebLogic Server JMS supports server affinity for distributed JMS destinations and client connections. (B, not A)

  By default, a WebLogic Server cluster uses the round-robin method to load balance objects. To use a load balancing algorithm that provides server affinity for JMS objects (not D), you must configure the desired method for the cluster as a

  whole.

  Reference: Using Clusters for Oracle WebLogic Server 12c , Load Balancing for JMS