Oracle 1Z0-599 Online Practice Questions and Exam Preparation

Oracle 1Z0-599 Online Questions & Answers

• Question 1:

  Which two statements are true regarding the WebLogic domain?

  A. A WebLogic domain can have more than one Administration server.
  B. A WebLogic domain has at least one WebLogic server.
  C. A WebLogic domain can have at the most one cluster.
  D. A WebLogic domain can cross multiple physical machines.
  E. Each WebLogic domain is associated with a different Node Manager.
  B. A WebLogic domain has at least one WebLogic server.
  D. A WebLogic domain can cross multiple physical machines.

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  B: A domain consists of one or more WebLogic Server instances (and their associated resources) that you manage with a single Administration Server.

  D: In a domain, server instances other than the Administration Server are referred to as Managed Servers. Managed Servers host the components and associated resources that constitute your applications.

  Incorrect:

  Not A: Each WebLogic Server domain must have one server instance that acts as the Administration Server.

  Not C: A domain can include multiple WebLogic Server clusters and non-clustered WebLogic Server instances.

  Not E: A Node Manager process is not associated with a specific WebLogic domain but with a machine. You can use the same Node Manager process to control server instances in any WebLogic Server domain, as long as the server

  instances reside on the same machine as the Node Manager process. Node Manager must run on each computer that hosts WebLogic Server instances--whether Administration Server or Managed Server--that you want to control with Node

  Manager.

  Reference: Overview of WebLogic Server Domains

• Question 2:

  In the absence of shared storage between cluster nodes, which two actions can you take to configure a High Availability architecture?

  A. Move domain logs to a highly available database.
  B. Move server logs to a highly available database.
  C. Move transaction logs to a highly available database.
  D. Move JMS persistent stores to a highly available database.
  E. Move error logs to a highly available database.
  C. Move transaction logs to a highly available database.
  D. Move JMS persistent stores to a highly available database.

• Question 3:

  You have a durable subscriber, and the subscriber is down or not reachable when the message is produced. Which two options regarding the expiry of these messages are true?

  A. after the subscriber is unavailable for 10 minutes
  B. when the subscriber is available
  C. after the subscriber is unavailable for after an hour
  D. are available until the specified time elapses
  E. are expired instantly
  B. when the subscriber is available
  D. are available until the specified time elapses

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  By default, JMS messages never expire. When applications send messages to queues or topics with durable subscribers, WebLogic must retain the message until it is consumed. This is fine in most point-to- point messaging applications because consumers are constantly consuming messages. Any message sent to a queue will typically be consumed in a relatively short period of time. If the consumers get disconnected, they will usually reconnect as soon as possible and start processing any messages that might have built up in the queue.

  D: For durable subscribers to a topic, this is not necessarily true. The messaging system is forced to retain any message that has not been consumed by a durable subscriber, regardless of whether that durable subscriber will ever return. In this case, WebLogic is at the mercy of the durable subscriber to unsubscribe when it no longer wishes to receive the messages. If the durable subscriber logic is flawed in such a way that the subscribers do not unsubscribe properly, the messaging system will start to fill up with messages that may never be delivered. This calls for real caution in using durable subscribers. Fortunately, there is another way to help deal with this problem. Message expiration can be set at the connection factory level. Using a connection factory's default time-to-live attribute, we can specify the number of milliseconds that WebLogic should retain an undelivered message after it is sent.

• Question 4:

  You are configuring the data source for an Oracle database. You will need to specify a test table for WebLogic to test the status of the database. Which option should you choose?

  A. a table name which has 100s of records
  B. a table name which has 10s of records
  C. a table name which has empty records
  D. a table name which has 1000s of records
  E. never use a table name
  C. a table name which has empty records

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  *

  When you create a data source using the Administration Console, the Administration Console automatically sets the Test Table Name attribute for a data source based on the DBMS that you select. The Test Table Name attribute is used in connection testing which is optionally performed periodically or when you create or reserve a connection, depending on how you configure the testing options. For database tests to succeed, the database user used to create database connections in the data source must have access to the database table. If not, you should either grant access to the user (make this change in the DBMS) or change the Test Table Name attribute to the name of a table to which the user does have access (make this change in the WebLogic Server Administration Console).

  *

  To manually test a connection from a data source, you can use the Test Data Source feature on the JDBC Data Source: Monitoring: Testing page in the Administration Console (see " Test JDBC data sources") or the testPool() method in the JDBCDataSourceRuntimMBean. To test a database connection from a data source, Test Reserved Connections must be enabled and Test Table Name must be defined in the data source configuration. Both are defined by default if you create the data source using the Administration Console.

  When you test a data source, WebLogic Server reserves a connection, tests it using the query defined in Test Table Name, and then releases the connection.

  Reference: Configuring and Managing JDBC Data Sources for Oracle WebLogic Server, Tuning Data Source Connection Pools

• Question 5:

  How can you configure High Availability for interacting with a non-Oracle database using WebLogic?

  A. Configure multiple physical data sources and reuse the same JNDI name for each.
  B. Use the "compatibility" option of Active GridLink to enable compatibility with non-Oracle databases.
  C. Configure a single physical data source for each node in a database cluster and wrap it using Multi Data Source.
  D. Configure a Data Source Group that contains a physical connection pool to each node in the database cluster.
  C. Configure a single physical data source for each node in a database cluster and wrap it using Multi Data Source.

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  Note:

  *

  A multi data source can be thought of as a pool of data sources. Multi data sources are best used for failover or load balancing between nodes of a highly available database system, such as redundant databases or Oracle Real Application Clusters (Oracle RAC).

  *

  (not B) A single GridLink data source provides connectivity between WebLogic Server and an Oracle Database service, which may include multiple Oracle RAC clusters

  *

  High Availability Storage Solutions

  If you have applications that need access to persistent stores that reside on remote machines after the migration of a JMS server or JTA transaction log, then you should implement one of the following highly- available storage solutions:

  / File-based stores (default or custom)--Implement a hardware solution, such as a dual-ported SCSI disk or Storage Area Network (SAN) to make a file store available from shareable disks or remote machines.

  / JDBC-accessible stores--Configure a JDBC store or JDBC TLOG store and use JDBC to access this store, which can be on yet another server. Applications can then take advantage of any high-availability or failover solutions offered by

  your database vendor. In addition, JDBC stores support GridLink data sources and multi data sources, which provide failover between nodes of a highly available database system, such as Oracle Real Application Clusters (Oracle RAC).

  Reference: Oracle Fusion Middleware Configuring Server Environments for Oracle WebLogic Server 12c, High Availability Storage Solutions

• Question 6:

  A highly available WebLogic cluster in UNIX is configured for automatic server migration. Node Managed is configured on both machines to start managed servers. How should you simulate a managed server failure to test whether automatic server migration is working?

  A. Shut down the managed server from the WebLogic console.
  B. Shut down the managed server using the WLST command through Node Manager.
  C. Run "kill -9" once to kill the managed server process.
  D. Run "kill -9" to kill the managed server process, and run "kill -9" one more time if the managed server is restarting.
  A. Shut down the managed server from the WebLogic console.

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  Note:

  *

  It is recommended that you shutdown WebLogic Server instances through the Administration Console.

  *

  If automatic server migration is enabled, the servers are required to contact the cluster leader and renew their leases periodically. Servers will shut themselves down if they are unable to renew their leases. The failed servers will then be automatically migrated to the machines in the majority partition.

• Question 7:

  You deployed a Java EE Shared Library and want to use it from an application that is also deployed on the same cluster.

  Which two manifest attributes must be specified at a minimum with corresponding values in the deployment descriptor of the application that requires

  A. Implementation-Version
  B. Specification-Version
  C. Extension-Name
  D. Specification-Vendor
  E. Implementation-Vendor
  A. Implementation-Version
  C. Extension-Name

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  When an application that references a shared library or package is deployed, WebLogic Server checks the names and version string requirements against the libraries registered with the server. If an exact match for a library or package name

  is not found, or if the version requirements are not met, the application deployment fails.

  If WebLogic Server finds a name and version string match for all of the libraries referenced in the application, the server adds the libraries' classes to the classpath of the referencing application and merges deployment descriptors from both

  the application and libraries in memory. The resulting deployed application appears as if the referenced libraries were bundled with the application itself.

  Note:

  As a best practice, your development team should always include version string information for a library or optional package in the manifest file for the deployment. See Editing Manifest Entries for Shared Libraries in Developing Applications

  for Oracle WebLogic Server for more information.

  If you are deploying a library or package that does not include version string information, you can specify it at the command line using one or both of the following options:

  libspecver--Defines a specification version for the library or package.

  libimplver--Specifies an implementation version for the library or package.

  Reference: Deploying Applications to Oracle WebLogic Server, Deploying Shared Java EE Libraries and Dependent Applications

• Question 8:

  You installed WebLogic, SOA Suite, and Oracle Service Bus on a machine and want to use the WebLogic Node Manager to start servers for each product. Which statement is true?

  A. You need to install a separate node manager for each Middleware Home that has a unique and minor WebLogic Version Number.
  B. You need to install and configure only one instance of Node Manager for all products, regardless of the WebLogic version number.
  C. You need to install and configure a separate Node Manager for each domain of each product want to run on the machine.
  D. You need to install one Node Manager but use separate SSL certificates for each product when securing the network communication to the machine.
  B. You need to install and configure only one instance of Node Manager for all products, regardless of the WebLogic version number.

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  Note:

  *

  A Node Manager process is not associated with a specific WebLogic domain but with a machine. You can use the same Node Manager process to control server instances in any WebLogic Server domain, as long as the server instances

  reside on the same machine as the Node Manager process. Node Manager must run on each computer that hosts WebLogic Server instances--whether Administration Server or Managed Server--that you want to control with Node Manager.

  *

  In managing multiple servers, Node Manager uses multiple configuration files and outputs log files to multiple directories.

  *

  nodemanager.domains

  This file contains mappings between the names of domains managed by Node Manager and their corresponding directories.

  *

  Node Manager in the WebLogic Server Environment

  

  Reference; Node Manager Administrator's Guide for Oracle WebLogic Server 12c

• Question 9:

  A customer needs to implement a Highly Available solution for JMS that has a primary data center and a backup. Which three steps would you perform when designing your solution?

  A. Store Transaction Logs in a database and use Database stores for JMS to make replication between sites easier.
  B. Use file based Transaction Logs and JMS stores and implement a separate replication solution for files in addition to database in case database replication fails.
  C. Implement Oracle RAC at each site to provide a highly available solution within each datacenter.
  D. Configure Whole Server Migration to migrate WebLogic Managed Servers from the primary to the secondary site.
  E. Configure Automatic Service Migration for JMS high availability within a datacenter.
  A. Store Transaction Logs in a database and use Database stores for JMS to make replication between sites easier.
  C. Implement Oracle RAC at each site to provide a highly available solution within each datacenter.
  E. Configure Automatic Service Migration for JMS high availability within a datacenter.

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  Note:

  

• Question 10:

  Which four service offerings are included in Oracle Public Cloud?

  A. Database Service
  B. Data Service
  C. Java Service
  D. Security Service
  E. .NET Service
  F. SOA Service
  A. Database Service
  B. Data Service
  C. Java Service
  D. Security Service