1Z0-102 Online Practice Questions and Answers

Correct Answer: D

This directory is created when the server is started for the first time.

Correct Answer: CDE

C: Choose the Startup Mode Specify the startup mode for your domain. Either Development or Production

D: The Create WebLogic Domain window prompts you to specify the name and pathname for the domain, and initiate its creation.

E: The Configure Administrator Username and Password window prompts you to specify a username and password to be used for starting the Administration Server.

Reference: Creating WebLogic Domains Using The Configuration Wizard http://docs.oracle.com/cd/E13179_01/common/docs92/confgwiz/newdom.html

Correct Answer: ABC

A: If an object is clustered, failover and load balancing for that object is available. In a WebLogic Server cluster, application processing can continue when a server instance fails. You "cluster" application components by deploying them on multiple server instances in the cluster--so, if a server instance on which a component is running fails, another server instance on which that component is deployed can continue application processing.

The choice to cluster WebLogic Server instances is transparent to application developers and clients.

B: A clustered application or application component is one that is available on multiple WebLogic Server instances in a cluster. If an object is clustered, failover and load balancing for that object is available. Deploy objects homogeneously--to every server instance in your cluster --to simplify cluster administration, maintenance, and troubleshooting.

Web applications can consist of different types of objects, including Enterprise Java Beans (EJBs), servlets, and Java Server Pages (JSPs).

Note: Load balancing and failover for EJBs and RMI objects is handled using replica-aware stubs, which can locate instances of the object throughout the cluster.

C: Cluster Multicast Address and Port

Identify the address and port you will dedicate to multicast communications for your cluster.

Incorrect answers:

D: Cluster heartbeats-- Each WebLogic Server instance in a cluster uses multicast to broadcast regular "heartbeat" messages that advertise its availability. By monitoring heartbeat messages, server instances in a cluster determine when a server instance has failed.

E: All server instances in a cluster must reside in the same domain; you cannot "split" a cluster over multiple domains. Similarly, you cannot share a configured resource or subsystem between domains.

F: Proxy might be needed depending how you set up the architecture, but a proxy is not required for web applications.

Reference: Using WebLogic Server Clusters , Understanding WebLogic Server Clustering

Correct Answer: BC

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:

Incorrect answers:

E, F: The statement cache deals with statements. Current capacity and Current Capacity High Count deals with connections.

Statement Cache Size shows the total number of statements to cache for each connection in each instance of the data source. WebLogic Server can reuse

statements in the cache without reloading the statements, which can increase server performance. Each connection in the connection pool has its own cache of

statements.

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

Correct Answer: B

For durable subscriptions, WebLogic JMS stores a message in a persistent file or database until the message has been delivered to the subscribers or has expired, even if those subscribers are not active at the time that the message is delivered.

Note #1: Durable subscriptions means that weblogic server will store the messages in a persistent store (i.e a file-store or a JDBC-store) until those messages are delivered to the subscribers/listener. This technic helps weblogic server to make sure that the messages get delivered even if those subscribers/listeners are not active at the time that the message is getting delivered.

As all of us know that in Topic's the senders/producers just send the messages to the topic and the receivers/listeners have subscribe them self to get those messages, hence senders/producers does not have any concern if the messages are been received or not. However with this feature weblogic make sure all the subscribers would get the messages as the messages gets stored in a persistence store.

Note #2:

*

Consumers Current Count: Current number of consumers accessing this destination

*

MessagesCurrentCount: The current number of messages in the destination. This does not include the pending messages.

*

MessagesPendingCount: The number of pending messages in the destination.

Pending messages are over and above the current number of messages. A pending message is one that has either been sent in a transaction and not committed, or that has been received and not committed or acknowledged.

Incorrect answers:

A: When a topic is paused for production, it prevents any new message production operations from both new and existing producers attached to that topic.

C: There is no pending message here. So there cannot be a message that a consumer has not acknowledged.

D: Non-durable messages are not stored.

Reference: eDocs Home > BEA WebLogic Server 8.1 Documentation > Programming WebLogic JMS > Developing a WebLogic JMS Application, Setting Up Durable Subscriptions

Correct Answer: D

Deployment Staging Mode: stage Behavior: The Administration Server first copies the deployment unit source files to the staging directories of target servers specified by the Staging Directory Name attribute.

The target servers then deploy using their local copy of the deployment files.

Note: The deployment staging mode determines how deployment files are made available to target servers that must deploy an application or standalone module. WebLogic Server provides three different options for staging files: stage mode, nostage mode, and external_stage mode. The following table describes the behavior and best practices for using the different deployment staging modes.

Reference: Overview of WebLogic Server Deployment, Staging Modes

Correct Answer: C

Although running Node Manager as an operating system service is recommended, you can also start Node Manager manually at the command prompt or with a script. Use startNodeManager.cmd on Windows systems and startNodeManager.sh on UNIX systems.

Reference: Configuring and Managing WebLogic Server, Configuring, Starting, and Stopping Node Manager

Correct Answer: E

The following signature takes the URL, user name, and password all as part of a URL parameter:

getConnection(String URL);

Where the URL is of the form: jdbc:oracle::/@

Reference: oracle.jdbc, Class OracleDriver

Correct Answer: C

The backup of the embedded LDAP server is enabled for a domain at a time. See step 2) in Note below.

Incorrect answers:

A: No need to shut down the server. See Note below.

B: The backup feature need to be configured. See Note below.

D: The format of the backup file is not comma-seperated.

Note: To configure the backups of the embedded LDAP server:

1.

If you have not already done so, in the Change Center of the Administration Console, click Lock and Edit

2.

Select the Domain you want to configure (for example, mydomain).

3.

Expand Security > Embedded LDAP.

4.

Set the Backup Hour, Backup Minute, and Backup Copies attributes on the Embedded LDAP Server page.

5.

Click Save to save your changes.

6.

To activate these changes, in the Change Center of the Administration Console, click Activate Changes.

Correct Answer: ABCD

A: 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.

B: WLST command names and arguments are case sensitive.

C: The WLST shutdown command Gracefully shuts down a running server instance or a cluster. The shutdown command waits for all the in-process work to be completed before shutting down the server or cluster.

You shut down a server to which WLST is connected by entering the shutdown command without any arguments.

D: All WLST commands include parentheses. Example: exit(),startApplication(appName, [options])

Incorrect answers:

E: WLST is based on the Java scripting interpreter, Jython.

F: The WLST connect command only to a WebLogic Server instance.

G: Without connecting to a running WebLogic Server instance, you can use WLST to create domain templates, create a new domain based on existing templates, or extend an existing, inactive domain. You cannot use WLST offline to view performance data about resources in a domain or modify security data (such as adding or removing users).

WLST offline provides read and write access to the configuration data that is persisted in the domain's config directory or in a domain template JAR created using Template Builder.

Reference: Documentation Home > BEA WebLogic Server 9.2 Documentation > WebLogic Scripting Tool > WLST Command and Variable Reference