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Oracle Weblogic Server 11g: System Administration I

Question No: 31

You have selected Configuration Archive Enabled for the domain. When a configuration change and activated, where is the previous version of the configuration archived?

  1. in the Oracle database

  2. in the config directory

  3. in the pending directory

  4. in the console-ext directory

  5. in the configArchive directory

Answer: E

Explanation: You can configure WebLogic Server to make backup copies of the configuration files. This facilitates recovery in cases where configuration changes need to be reversed or the unlikely case that configuration files become corrupted. When the Administration Server starts up, it saves a JAR file named config-booted.jar that contains the configuration files. When you make changes to the configuration files, the old files are saved in the configArchive directory under the domain directory, in a JAR file with a sequentially-numbered name like config-1.jar.

Reference: Understanding Domain Configuration, Configuration File Archiving

http://docs.oracle.com/cd/E12840_01/wls/docs103/domain_config/config_files.html

Question No: 32

When a typical application utilizes a JDBC data source, the process involves several steps. Identify three of these steps.

  1. The application returns the connection to the data source.

  2. The application looks up the data source using the JNDI name.

  3. The application tests the connection to verify the database#39;s availability.

  4. The application adds a new connection to the data source if none are available.

  5. The application requests a connection from the data source.

Answer: B,D,E

Explanation: Applications look up the data source on the JNDI tree or in the local application context (B) and then reserve a database connection with the getConnection (E) method. Data sources and their connection pools provide connection management processes that help keep your system running and performant.

B: JNDI Name – Enter the JNDI path to where this JDBC data source will be bound. Applications look up the data source on the JNDI tree by this name when reserving a connection.

Note: If you#39;ve done any work with JDBC DataSources in a Web application, you already understand the basic process: create an initial JNDI (Java Naming and Directory Interface) context, then use the context to perform a quot;lookupquot; to retrieve your DataSource.

Reference: Administration Console Online Help, Create JDBC data sources

http://docs.oracle.com/cd/E15051_01/wls/docs103/ConsoleHelp/taskhelp/jdbc/jdbc_dataso urces/CreateDataSources.html

Question No: 33

As an Oracle WebLogic Server administrator, you are given an EAR file application to deploy. Identity three reasons for creating an EAR file first.

  1. After the .ear file has been deployed, the developer will not have to ask for your assistance to deploy it again.

  2. The EAR file is created to avoid namespace clashes in the Java code.

  3. The EAR file can contain multiple WAR, EAR, and other resources to easily bundle together.

  4. The EAR file is required if you are deploying an application.

  5. The EAR file can declare application-wide security roles definitions.

Answer: A,B,E Explanation:

E: An EARfile contains:

  • Web module

  • A WAR file containing the view logics like JSPs, Servlets, Html contents. Every web module must have one Web Deployment descriptor placed inside “WEB-INF/web.xml”

    web.xml is a J2EE standard deployment descriptor. Among other settings, it has a set of elements for configuring security for the web application.

    Note:

    • An EAR file provides a convenient way to bundle up all pieces of a J2EE application. It may contain Java Module, WAR Module or an EJB Jar module.

      An EAR can contain at least any one of these modules. EAR may contain more Modules as well.

    • To bring your portal online in a production environment, it is first necessary to prepare your portal application. Typical preparation steps include modifying deployment descriptors for the product, building the Enterprise archive (EAR) with all its pre-compiled classes, and deciding if you want to compress that EAR into an archive or leave it exploded.

    Reference: Preparing and Deploying the EAR File

    Question No: 34

    Identify three types of JMS resources that can be configured as a part of a JMS module.

    1. JMS Distributed Destination

    2. JMS Connection Factory

    3. JMS Data Source

    4. JMS Destination

    5. JMS Server

    Answer: A,B,D

    Explanation: Configurable JMS Resources in Modules

    The following configuration resources are defined as part of a system module or an application module:

    • Distributed destinations (A, D)

    • Connection factories (B)

    • Queue and topic destinations

    • Templates

    • Quota

    • Foreign servers

    • MS store-and-forward (SAF) configuration items

      All other JMS environment-related resources must be configured by the administrator as domain configuration resources. This includes:

    • JMS servers required (not E)

    • Store-and-Forward agents (optional)

    • Path service (optional)

    • Messaging bridges (optional)

    • Persistent stores (optional)

    Reference: Configuring And Managing WebLogic JMS, Configurable JMS Resources in Modules

    Question No: 35

    A managed server, myserver1, has a boot.properties file in the security directory. It was started with the startManageWeblogic.sh script(.cmd in windows) and his boot.properties file was used for its startup credentials.

    You just used the administration console to change all administrator passwords. To continue using boot.properties, what can you do?

    1. This is not possible. A boot.properties file can be used only with the Administration Server.

    2. Delete boot.properties. In the administration console, under the myserver configuration, select Generate Boot Identity file.

    3. You need not do anything- The password in boot .properties was automatically updated by administration console when you changed the password.

    4. Edit boot.propetties. Type over the encrypted password with the new password in clear text. The next time myserver1 is started, it will encrypt the password in the file.

    5. Delete boot .properties. Use the WLST encrypt () command to create a new boot.properties file containing the new password. Copy that file into the security directory of myserver1

    Answer: D

    Explanation: If you install the WebLogic Server Examples component, the default user weblogic is created that has permission to start and stop WebLogic Server. The default password is welcome1. If you change the password of the weblogic user, WebLogic Server does not automatically update this password in the boot.properties file, which is located in the DOMAIN_NAME/servers/AdminServer/security directory.

    If you change the password for user weblogic, you can use either of the following workarounds so that you can continue to boot a WebLogic Server instance via that username and its new password:

    • Remove the boot.properties file. Subsequently each time you start WebLogic Server, you are prompted for the username and password. The changed password for the weblogic user will be accepted.

    • Modify the existing boot.properties file, changing the username and password as follows: username=weblogic

    password=welcome1

    Subsequently during the server startup process, the boot.properties file is encrypted again.

    Reference: Oracle Fusion Middleware Oracle WebLogic Server Administration Console Online Help 11g Release 1, Limitation Regarding User weblogic

    http://docs.oracle.com/cd/E15523_01/web.1111/e13708/overview.htm

    Question No: 36

    Refer to the Exhibit.

    Ensurepass 2018 PDF and VCE

    Which three statements are true about using the administration console to shut down a server?

    1. The configuration must first be locked.

    2. The choice quot;Force Shutdown Nowquot; drops in-work requests.

    3. Both the choices, quot;When work completesquot; and quot;Force Shutdown Nowquot;, reject any new requests.

    4. The choice quot;When work completesquot; allows in work requests to complete before the server down.

    5. The administration console can be used to shut down Managed Servers, such as managed not the Administration Server.

    Answer: B,C,D

    Explanation: A: See step 3) in the note below.

    B: select Force Shutdown Now to stop the server immediately without completing ongoing tasks.

    D: Select When Work Completes to gracefully shut down the server

    A graceful shutdown gives WebLogic Server subsystems time to complete certain application processing currently in progress.

    Question No: 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?

    1. Grid

    2. Queue

    3. Topic

    4. Batch

    5. Client

    Answer: C

    Explanation: 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 No: 38

    You monitor a running JDBC data source with the console and note the following values:

    Current Capacity = 10

    Current Capacity High Count = 20

    Identify two plausible explanations for these metrics.

    1. The pool size has increased.

    2. The pool size has decreased.

    3. The workload was higher than it is now.

    4. The workload was lower than it is now.

    5. The statement cache size is 10.

    6. The statement cache size is 20.

    Answer: B,C

    Explanation: The pool size has decreased from a maximum 20 to 10. The workload has been 20. Now it is 10. The workload was higher.

    Note: Current Capacity: The current count of JDBC connections in the connection pool in the data source.

    Current Capacity High Count: Highest number of database connections available or in use (current capacity) in this instance of the data source since the data source was deployed.

    Note:

    Reference: Administration Console Online Help, JDBC Data Source: Monitoring: Statistics

    Question No: 39

    Identify the server attributes that you must configure to communicate with the server via HTTPS.

    1. SSL Listen Address

    2. SSL listen Port

    3. SSL Listen Port Enabled

    4. Production Mode Enabled

    5. Startup Mode

    Answer: B

    Explanation: Enabling SSL under WLS 10.3 See step 6) below.

    Steps to configure WLS for SSL:

    1. Open the WLS console

    2. Select from the Domain Structure -gt; (your domain) -gt; Environment -gt; Servers

    3. Select the server from the Summary of Servers page you wish to configure for SSL.

    4. Under the Settings for (server name) page, select the Configuration tab, then General tab (the defaults).

    5. If WLS is running in production mode, select the Lock amp; Edit button.

    6. Select the SSL Listen Port Enabled checkbox, and enter your preferred port in the SSL Listen Port.

    7. Press the Save button.

    8. If WLS is running in production mode, select the Release Configuration button. Reference: Enabling SSL and disabling non-SSL under WLS 10.3

    Question No: 40

    You are creating a new domain by using the Configuration Wizard, based solely on the Basic WebLogic Server Domain product (no template). Select three resources that you can create while still in the Configuration Wizard.

    1. Administration Server

    2. Managed Server

    3. Data Server

    4. JMS Server

    5. Cluster

    6. Domain Log

    Answer: A,B,E

    Explanation: A: The Configure the Administration Server window prompts you to define the configuration information for the Administration Server, including:

    Administration Server name Listen address

    Nonsecure and secure (optional) listen ports

    B: The Configure Managed Servers window prompts you to define the configuration information for one or more Managed Servers, including:

    Managed Server name Listen address

    Nonsecure and secure (optional) listen ports

    E: The Configure Clusters window prompts you to define the configuration information for one or more clusters, including:

    Cluster name

    Multicast address and port

    Cluster address that identifies the Managed Servers in the cluster Frontend host if you are using a proxy server or a firewall.

    Frontend HTTP port if you are using a proxy server or a firewall.

    Reference: To create a custom domain with Managed Servers, a cluster, and application services

    http://docs.oracle.com/cd/E13196_01/platform/docs81/confgwiz/tutorials.html

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