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Oracle 1z0-599 Exam Practice Questions (P. 2)

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Question #6
A customer has a critical, performance-sensitive web application that connects to a multinode Oracle RAC database. Which feature of WebLogic can provide significant performance benefit?
  1. A
    The Web Session Affinity feature of Active GridLink for RAC
  2. B
    WebLogic Clustering
  3. C
    The Transaction Affinity feature of Active GridLink for RAC
  4. D
    Coherence*Web Session Replication

Correct Answer:
C
WebLogic GridLink Data Sources supports transaction-based affinity.
Reference:
http://www.oracle.com/technetwork/middleware/weblogic/gridlink-rac-wp-494900.pdf

Question #7
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?
  1. A
    Store Transaction Logs in a database and use Database stores for JMS to make replication between sites easier.
  2. 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.
  3. C
    Implement Oracle RAC at each site to provide a highly available solution within each datacenter.
  4. D
    Configure Whole Server Migration to migrate WebLogic Managed Servers from the primary to the secondary site.
  5. E
    Configure Automatic Service Migration for JMS high availability within a datacenter.

Correct Answer:
ACE
Note:

Question #8
Which WebLogic optimization allows one non-XA resource to participate in a distributed transaction?
  1. A
    enabling Pinned to Thread
  2. B
    enabling Logging Last Resource
  3. C
    increasing the Statement cache size
  4. D
    setting the statement cache type to LRU
  5. E
    setting the initial and maximum capacity to the same number

Correct Answer:
B
Oracle WebLogic Server Logging Last Resource (LLR) An additional option for XA transactions is Oracle WebLogic Servers Logging Last Resource
(LLR) transaction optimization through JDBC data sources. LLR is a performance enhancement option that enables one non-XA resource to participate in a distributed transaction with the same ACID guarantee as XA. In a distributed transaction with an LLR participant, the Oracle WebLogic Server transaction
Reference:
http://www.oracle.com/technetwork/products/clustering/overview/distributed-transactions-and-xa-163941.pdf

Question #9
A customer has a Stock Watch application that publishes stock recommendations to different customers and programs. The stock recommendation message should be processed by only one of the JMS Servers in the cluster. Which JMS model should be used?
  1. A
    JMS Queue
  2. B
    Distributed JMS Queue
  3. C
    Uniform Distributed Topic
  4. D
    Partitioned Distributed Topic

Correct Answer:
A
JMS queue -
A staging area that contains messages that have been sent and are waiting to be read. Note that, contrary to what the name queue suggests, messages have to be delivered in the order sent A JMS queue only guarantees that each message is processed only once.
Reference:
http://integrationspot.blogspot.com/2011/03/jms-queue-difference-between-queue-and.html

Question #10
A customer has a critical, performance-sensitive web application that connects to a multimode Oracle RAC database. Which feature of WebLogic can provide signification benefit?
  1. A
    The Web Session Affinity feature of Active GridLink for RAC.
  2. B
    WebLogic Clustering
  3. C
    The Transaction Affinity feature of Active GridLink for RAC
  4. D
    Coherence*Web Session Replication

Correct Answer:
C
Active GridLink for Oracle RAC -
In Oracle WebLogic Server 10.3.4, a single data source implementation has been introduced to support an Oracle RAC cluster. It responds to FAN events to provide Fast Connection Failover (FCF), Runtime Connection Load-Balancing (RCLB), and RAC instance graceful shutdown. XA affinity is supported at the global transaction Id level. The new feature is called WebLogic Active GridLink for RAC; which is implemented as the GridLink data source within WebLogic Server.
Note:
* The WebLogic Server JDBC subsystem has supported Oracle RAC since WLS version 9.0, originally developed for Oracle9i RAC. This support is based on a particular type of data source configuration, called a multi data source. A multi data source is a data source abstraction over one or more individual data sources.
It serves JDBC connections from each of the member data sources according to a specified policy. A RAC multi data source configuration requires that each member data source obtain connections to a particular RAC instance.
Reference: How-To: Use Oracle WebLogic Server with a JDBC GridLink Data Source

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