Oracle 1Z0-102 Online Practice Questions and Exam Preparation

Oracle 1Z0-102 Online Questions & Answers

• Question 31:

  You have 10 cluster managed servers in a domain. Due to the maintenance tasks currently in progress, two of the managed servers are in a "Shutdown" status.

  You have been asked to deploy an application.

  As a default behavior of WebLogic Server, which two statements are true?

  A. The application cannot be deployed until the two managed servers are available.
  B. The application can be deployed while the two managed servers are in "Shutdown" status.
  C. The application will be deployed to the eight managed servers that are running. The two managed servers that are in the Shutdown state will eventually receive the deployment when they are started again.
  D. The application deployment will fail and the application will not be deployed to any managed server in the cluster.
  E. The application deployment will fail and the eight managed servers that are running will transition to "Admin" state.
  B. The application can be deployed while the two managed servers are in "Shutdown" status.
  C. The application will be deployed to the eight managed servers that are running. The two managed servers that are in the Shutdown state will eventually receive the deployment when they are started again.

  ---

  When you deploy an application to a cluster target, WebLogic Server ensures that the deployment suc- cessfully deploys on all available members of the cluster

  Reference: Oracle Fusion Middleware Deploying Applications to Oracle WebLogic Server, Deploying to a Cluster Target

• Question 32:

  You have made several changes to variable attributes on a managed server within a domain. You first locked the console, made some nondynamic changes, made some dynamic changes as well, and then activated your changes. Which statement is true?

  A. All the changes that you made on the server will take effect immediately.
  B. The dynamic changes that you made will take effect immediately and the changes that are nondynamic will take effect after the server is restarted.
  C. The changes that you made on the server will not take effect until you restart the server.
  D. You will receive an error because you cannot make dynamic and nondynamic changes to a server at the same time.
  C. The changes that you made on the server will not take effect until you restart the server.

  ---

  If a change is made to a non-dynamic configuration setting, no changes to dynamic configuration settings will take effect until after restart. This is to assure that a batch of updates having a combination of dynamic and non-dynamic attribute edits will not be partially activated.

  Note: Some changes you make in the Administration Console take place immediately when you activate them. Other changes require you to restart the server or module affected by the change. These latter changes are called non-dynamic changes.

  Changes to dynamic configuration attributes become available once they are activated, without restarting the affected server or system restart. These changes are made available to the server and runtime hierarchies once they are activated. Changes to non-dynamic configuration attributes require that the affected servers or system resources be restarted before they become effective.

  Reference: Overview of the Administration Console, Dynamic and Non-Dynamic Changes

• Question 33:

  Which three methods does WebLogic provide to implement persistent JMS messaging?

  A. Create a file store and assign it to a JMS server.
  B. Create a JDBC store and assign it to a JMS server.
  C. Configure a file store within a JMS module.
  D. Configure the domain's default store.
  E. Use the target server's default store.
  A. Create a file store and assign it to a JMS server.
  B. Create a JDBC store and assign it to a JMS server.
  E. Use the target server's default store.

  ---

  A: The main steps for creating a custom file store are as follows:

  1.Create a directory where the file store's data will be persisted. 2.Create a custom file store and specify the directory location that you created. 3.Associate the custom file store with the subsystem(s) or migratable target that will be accessing

  it, such as:

  *For JMS servers, select the custom file store on the General Configuration page. *For Store-and-Forward agents, select the custom file store on the General Configuration page. *For a Path Service, select the custom file store on the General

  Configuration page.

  B: The main steps for creating a JDBC store are as follows:

  Create a JDBC data source or multi data source to interface with the JDBC store. Create a JDBC store and associate it with the JDBC data source or multi data source. It is highly recommended that you configure the Prefix option to a unique

  value for each configured JDBC store table.

  Associate the JDBC store with the subsystem(s) that will be using it, such as:

  For JMS servers, select the JDBC store on the General Configuration page. For Store-and-Forward agents, select the JDBC store on the General Configuration page. For a Path Service, select the custom file store on the General

  Configuration page.

  E: Each server instance, including the administration server, has a default persistent store that requires no configuration.

  Note:

  When a persistent message is sent, it is stored in the WebLogic Persistent Store. The persistent store provides a built-in, high-performance storage solution for WebLogic Server subsystems and services that require persistence. For

  example, it can store persistent JMS messages or temporarily store messages sent using the Store-and-Forward feature. The persistent store supports persistence to a file-based store or to a JDBC-enabled database.

  Note 2: A persistent message is guaranteed to be delivered once-and-only-once. The message cannot be lost due to a JMS provider failure and it must not be delivered twice. It is not considered sent until it has been safely written to a file or

  database. WebLogic JMS writes persistent messages to a WebLogic persistent store (disk-base file or JDBC-accessible database) that is optionally targeted by each JMS server during configuration.

  Reference: Using the WebLogic Persistent Store

• Question 34:

  Consider an IT infrastructure comprising several web and EJB applications. Each application is expected to handle significantly different workloads, and therefore has different resource and scalability requirements. Which is the best solution for this scenario?

  A. Configure a dedicated server for each application.
  B. Configure a separate cluster for each application.
  C. Configure a separate domain for each application.
  D. Configure a separate proxy for each application.
  B. Configure a separate cluster for each application.

  ---

  A WebLogic domain can be composed of a number of WebLogic instances, and several of these servers may be grouped into clusters. For instance, you could set up a cluster of WebLogic servers, all of which host your web application and related resources. This cluster of servers could be fronted by a load balancer that distributes requests evenly across all the members of the cluster. The load balancer could itself be another WebLogic instance. All server instances must belong to the same WebLogic domain. Thus, a WebLogic cluster is a group of servers working together with services, such as clustered JNDI, to provide support for failover and load balancing. A domain may in turn have a number of WebLogic instances, several groups of which can be placed into different clusters.

• Question 35:

  What is the maximum number of targets (standard or migrate) that you can configure for a JMS server?

  B. 1
  C. 2
  D. No limit
  D. No limit

  ---

  To configure the migratable target servers for JMS-related service migration:

  1.

  If you have not already done so, in the Change Center of the Administration Console, click Lock and Edit (see Use the Change Center).

  2.

  In the Domain Structure tree, expand Environment, then select Migratable Targets.

  3.

  On the Summary of Migratable Targets page, click New.

  On the Create a new Migratable Target page:

  In Name, enter a name for the migratable target.

  In Cluster, select a configured cluster for the migratable target.

  Reference: Configure migratable targets for JMS-related services

• Question 36:

  View the exhibit.

  

  You are logged in to the WebLogic Server administration console and you are editing the fields shown in exhibit. Which type of WebLogic Server resource are you currently editing?

  A. JMS Server
  B. Persistent Store
  C. JDBC Data Source
  D. Diagnostics Module
  E. JMS Connection Factory
  E. JMS Connection Factory

  ---

  MS Connection Factory: Configuration: Default Delivery

  Use this page to define the default delivery configuration parameters for this JMS connection factory, such as the default delivery mode, default time to live, etc.

  Reference: JMS Connection Factory: Configuration: Default Delivery

• Question 37:

  Your company is developing batch order system that utilities JMS. Each order message that is created will be broadcasted to and consumed by several order processing and billing applications.

  As part of configuring the domain that will support this system, which type of JMS destination resource should you create?

  A. Grid
  B. Queue
  C. Topic
  D. Batch
  E. Client
  C. Topic

  ---

  A JMS destination identifies a queue (point-to-point) or topic (publish/subscribe) resource within a JMS module. A JMS topic identifies a publish/subscribe destination type for a JMS server. Topics are used for asynchronous peer communications. A message delivered to a topic is distributed to all consumers that are subscribed to that topic.

  Reference: Configuring Basic JMS System Resources,Queue and Topic Destination Configuration

• Question 38:

  Which four tasks are required to use database persistence for JMS messages?

  A. Assign a data source to a JDBC store.
  B. Configure a data source's delivery mode.
  C. Assign a JDBC store to a JMS server.
  D. Create a JDBC data source.
  E. Disable a server's file store.
  F. Create a JDBC store.
  A. Assign a data source to a JDBC store.
  C. Assign a JDBC store to a JMS server.
  D. Create a JDBC data source.
  F. Create a JDBC store.

  ---

  The main steps for creating a JDBC store are as follows:

  1.

  Create a JDBC data source (D) or multi data source to interface with the JDBC store.

  2.

  Create a JDBC store (F) and associate it with the JDBC data source (A) or multi data source.

  3.

  It is highly recommended that you configure the Prefix option to a unique value for each configured JDBC store table.

  4.

  Associate the JDBC store with the subsystem(s) that will be using it, such as:

  *

  For JMS servers, select the JDBC store (C) on the General Configuration page.

  *

  For Store-and-Forward agents, select the JDBC store on the General Configuration page.

  Note: The WebLogic Persistent Store provides a built-in, high-performance storage solution for all subsystems and services that require persistence. For example, it can store persistent JMS messages or temporarily store messages sent using the Store-and-Forward feature. Each WebLogic Server instance in a domain has a default persistent store that requires no configuration and which can be simultaneously used by subsystems that prefer to use the system's default storage. However, you can also configure a dedicated file-based store or JDBC database-accessible store to suit your JMS implementation.

  Reference: Documentation Home > BEA WebLogic Server 9.2 Documentation > Configuring WebLogic Server Environments > Using the WebLogic Persistent Store, Main Steps for Configuring a JDBC Store

• Question 39:

  Which three statements are true about the default behavior of WebLogic Server proxy plug-ins?

  A. The proxy will pin a client to a specific server if a session cookie is created.
  B. The proxy fails over to another server if a connection or request times out.
  C. The proxy distributes requests to cluster members based on their CPU usage.
  D. The proxy dynamically learns the latest locations of cluster members.
  E. The proxy always uses SSL, regardless of the client's protocol.
  F. The proxy replicates session data to its backup proxy.
  A. The proxy will pin a client to a specific server if a session cookie is created.
  B. The proxy fails over to another server if a connection or request times out.
  D. The proxy dynamically learns the latest locations of cluster members.

  ---

  A: When the HTTP client requests the servlet, HttpClusterServlet proxies the request to the WebLogic Server cluster. HttpClusterServlet maintains the list of all servers in the cluster, and the load balancing logic to use when accessing the

  cluster. In the above example, HttpClusterServlet routes the client request to the servlet hosted on WebLogic Server A. WebLogic Server A becomes the primary server hosting the client's servlet session. To provide failover services for the

  servlet, the primary server replicates the client's servlet session state to a secondary WebLogic Server in the cluster. This ensures that a replica of the session state exists even if the primary server fails (for example, due to a network failure).

  In the example above, Server B is selected as the secondary. The servlet page is returned to the client through the HttpClusterServlet, and the client browser is instructed to write a cookie that lists the primary and secondary locations of the

  servlet session state. If the client browser does not support cookies, WebLogic Server can use URL rewriting instead.

  Figure, Accessing Servlets and JSPs using a Proxy:

  

  B: In clusters that utilize Web servers with WebLogic proxy plug-ins, the proxy plug-in handles failover transparently to the client. If a server fails, the plug-in locates the replicated HTTP session state on a secondary server and redirects the client's request accordingly.

  D: The WebLogic proxy plug-in maintains a list of WebLogic Server instances that host a clustered servlet or JSP, and forwards HTTP requests to those instances on a round-robin basis. Incorrect answers:

  C: The WebLogic proxy plug-in maintains a list of WebLogic Server instances that host a clustered servlet or JSP, and forwards HTTP requests to those instances on a round-robin basis. This load balancing method is described in Round Robin Load Balancing. The plug-in also provides the logic necessary to locate the replica of a client's HTTP session state if a WebLogic Server instance should fail.

  F: SSL Parameters for Web Server Plug-ins Parameter: SecureProxy Default: OFF Description: Set this parameter to ON to enable the use of the SSL protocol for all communication between the plug-in and WebLogic Server.

  Reference: Using WebLogic Server Clusters, Failover and Replication in a Cluster Reference: Using WebLogic Server Clusters, Load Balancing in a Cluster

• Question 40:

  You have successfully created a global data source and connection pool via the administration console. In which directory relative to the domain will this new data source and connection pool definition located?

  A. in a directory named config/dataSource
  B. in a directory named config/connPool
  C. in a directory named config/resources
  D. in a directory named config/jdbc
  E. in a directory named config
  D. in a directory named config/jdbc

  ---

  When you create a JDBC resource (data source or multi data source) using the Administration Console or using the WebLogic Scripting Tool (WLST), WebLogic Server creates a JDBC module in the config/jdbc subdirectory of the domain directory, and adds a reference to the module in the domain's config.xml file.

  Reference: Configuring WebLogic JDBC Resources