Oracle Oracle Certifications 1Z0-102 Questions & Answers

• Question 31:

  You wish to provide failover for HTTP sessions within a cluster. However, you are limited by the following constraints:

  1.

  While under load, your servers have very little free memory.

  2.

  you do not have appropriate access rights to modify your company's database.

  Which is the best option, given these restrictions?

  A. in-memory replication

  B. automatic migration

  C. file persistence

  D. JDBC persistence

  E. replication groups

  Correct Answer: C

  File persistence use less memory than in-memory replication, and does not need access rights to the company's database.

  Note:

  You use session persistence to permanently store data from an HTTP session object to enable failover and load balancing across a cluster of WebLogic Servers.

  When your applications stores data in an HTTP session object, the data must be serializable. There are five different implementations of session persistence:

  *

  Memory (single-server, non-replicated)

  *

  File system persistence

  *

  JDBC persistence

  *

  Cookie-based session persistence

  *

  In-memory replication (across a cluster)

  Incorrect answers:

  A: 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.

  D: JDBC persistence stores session data in a database table using a schema provided for this purpose. You can use any database for which you have a JDBC driver. You configure database access by using connection pools.

  Note: When you use memory-based storage, all session information is stored in memory and is lost when you stop and restart WebLogic Server.

  Reference: Oracle Fusion Middleware Developing Web Applications, Servlets, and JSPs for Oracle WebLogic Server, Using Sessions and Session Persistence

• Question 32:

  What is the default Staging Mode for servers?

  A. No-Stage

  B. Stage

  C. External Stage

  D. Use the defaults defined by the deployment targets

  E. Copy the application onto every target for me

  Correct Answer: B

  WebLogic Server provides three different options for staging files: stage mode, nostage mode, and external_stage mode.

  By default, WebLogic Portal's default staging mode is "stage."

  Reference: Oracle Fusion Middleware Production Operations Guide for Oracle WebLogic Portal, Changing the Default Staging Mode

• Question 33:

  When using the Install Application Assistant in the administrator console, what are the two options that may select for "Choose Targeting Style"?

  A. Choosing "Install this deployment as a resource" will allow you to deploy any type of resource archive.

  B. Choosing "Install this deployment as a library" will allow you to deploy any archive, which can be referenced by other applications.

  C. Choosing "Install this deployment as expanded format" allow expanded directories to be utilized.

  D. Choosing "Install this deployment as an application" will allow you to deploy any archive or extended directory.

  E. Choosing "Install this deployment as a stand-alone library" will allow you to deploy a library, which can be used only by nonclustered servers.

  Correct Answer: BD

  The Choose Targeting Style page is displayed:

  

  Reference: Oracle Fusion Middleware Application Adapter Best Practices Guide for Oracle WebLogic Server, Configuring Oracle Application Adapters in a High Availability Cluster Environment

• Question 34:

  Indentify three ways to create a domain template.

  A. Administration console

  B. Domain Template Builder

  C. unpack command

  D. pack command

  E. Node Manager

  F. WLST

  G. Configuration Wizard

  Correct Answer: BDF

  B: Go to Start Menu->All programs->weblogic10gR3->Tools->Domain Template Builder

  D: The pack command creates a template archive (.jar) file that contains a snapshot of either an entire domain or a subset of a domain. You can use a template that contains a subset of a domain to create a Managed Server domain directory hierarchy on a remote machine.F: 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.

  Incorrect answer:

  Reference: Creating Domain Templates Using the Domain Template Builder Reference: Creating Domains Using WLST Offline

• Question 35:

  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.

  Correct Answer: BC

  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 36:

  An application fails. The exception indicates that the JDBC data source, jdbc-hr.HRDS, cannot be found. Identify two possible steps that you can perform to verify the data source's availability.

  A. Launch the JDBCDiagnostics utility.

  B. Verify the Targets attribute of the application.

  C. Verify the Dependencies attribute of the data source.

  D. Verify the target server's JNDI tree in the console.

  E. Verify the Target attribute of the data source.

  Correct Answer: DE

  D: In WebLogic Server, you configure database connectivity by adding data sources to your WebLogic domain. WebLogic JDBC data sources provide database access and database connection management. Each data source contains a pool of database connections that are created when the data source is created and at server startup. Applications reserve a database connection from the data source by looking up the data source on the JNDI tree or in the local application context and then calling getConnection().

  E: Each data source that you configure contains a pool of database connections that are created when the data source instance is created--when it is deployed or targeted, or at server startup. Applications lookup a data source on the JNDI tree or in the local application context (java:comp/env), depending on how you configure and deploy the object, and then request a database connection. When finished with the connection, the application calls connection.close(), which returns the connection to the connection pool in the data source.

  Incorrect answers: A: There is no such Weblogic utility.

  B: This is a JDBC error. There is no JDBC application target. There is JDBC data source target, however.

• Question 37:

  An application is deployed to your domain and its manifest indicates version 1.1. You then perform an application update by using a manifest that indicates version

  1.2.

  Indentify two outcomes of this scenario.

  A. The existing 1.1 clients are redirected to the 1.2 application

  B. The existing 1.1 clients are shown a warning message.

  C. The existing 1.1 clients continue to use the 1.1 application.

  D. New clients are asked which version they wish to use.

  E. New clients use only use 1.2 application

  Correct Answer: CE

  As long as the HTTP Session is valid, the old user will continue to use "Version 1." All new users will be using "Version 2.

  Reference: Oracle WebLogic Server 12c: Configuring and Using Production Redeployment.

• Question 38:

  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

  Correct Answer: E

  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 39:

  When you use the Embedded LDAP that is supplied by Oracle WebLogic Server, which three statements are true?

  A. The Embedded LDAP can be used to store user, group, security roles and security policies for the WebLogic security providers.

  B. The Embedded LDAP uses the file system to store Weblogic security provider data.

  C. The Embedded LDAP can be accessed by an external LDAP viewer.

  D. The Embedded LDAP cannot be used in a production environment

  E. The Embedded LDAP can store Auditing Data.

  Correct Answer: ACE

  A: The embedded LDAP server contains user, group, group membership, security role, security policy, and credential map information.

  C: The credential (usually a password) used to connect to the embedded LDAP server. If this password has not been set, WebLogic Server generates a password

  at startup, initializes the attribute, and saves the configuration to the config.xml file. If you want to connect to the embedded LDAP server using an external LDAP

  browser and the embedded LDAP administrator account (cn=Admin), change this attribute from the generated value.

  E: You can use either the WebLogic Auditing provider or a custom Auditing provider in a security realm. Although an Auditing provider is configured per security

  realm, each server writes auditing data to its own log file in the server directory. By default, all auditing information recorded by the WebLogic Auditing provider is

  saved in the following file:

  WL_HOME\yourdomain\yourserver\DefaultAuditRecorder.log.

  By writing a custom Auditing provider, however, you can send the records containing audit information to any one of various output repositories, such as an LDAP

  server, database, or a simple file.

  Incorrect answers:

  D: The embedded LDAP server is the default security provider database for the WebLogic Authentication, Authorization, Credential Mapping and Role Mapping providers.

  Incorrect answers:

  B: The WebLogic Authentication, Authorization, Credential Mapping, and Role Mapping providers use the embedded LDAP server as their database.

  Note: The WebLogic Security providers store their data in the embedded LDAP server. When you delete a WebLogic Security provider, the security data in the embedded LDAP server is not automatically deleted. The security data remains in the embedded LDAP server in case you want to use the provider again. Use an external LDAP browser to delete the security data from the embedded LDAP server.

• Question 40:

  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.

  Correct Answer: C

  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