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Q71. Which is true about the InfiniBand spine switch as it is used in Exalogic? (Choose two) 

A. It is a full 36-port QDR InfiniBand switch. 

B. It is included in quarter, half and full rack configurations 

C. It is only used when wiring multi-rack configurations. 

D. It is used for all InfiniBand switching required between compute nodes and the storage appliance. 

Answer: A,C 

Explanation: 

The InfiniBand spine switch is only used when wiring multi-rack configurations. In addition, It is a full 36-portQDR InfiniBand switch. 


Q72. Which default profile configuration is supported by Exalogic? 

A. triple mirrored 

B. mirrored 

C. single parity RAID, narrow stripes 

D. triple parity RAID, wide stripes 

Answer: B 

Explanation: 


Q73. Which two network channels are necessary to be configured on the admin server? 

A. HTTP client channel 

B. T3 channel 

C. SDP channel 

D. EoIB channel 

Answer: A,B 

Reference:http://docs.oracle.com/cd/E18476_01/doc.220/e18479/create_domain.htm#BABFHFIA( first paragraph) 


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Q74. When configuring an Active GridLink for RAC datasource, which three actions are important? 

A. Select “FAN Enabled” in the ONS configuration section to ensure that all oracle FAN events are processed 

B. Deselect “FAN Enabled” in the ONS configuration section to ensure that Oracle FAN events do not interface with the GridLink datastore 

C. Target all servers that will make use of the datastore 

D. Test the ONS client configuration 

E. Select the GridLink JDBC driver 

Answer: A,C,D 

Reference:http://docs.oracle.com/cd/E18476_01/doc.220/e18479/optimization.htm#BABIHEDI(7.6 .2, 10th, 11thand 12thbulleted points) 


Q75. Which are included in the Exalogic Base Image that is installed at the factory? (Choose two) 

A. WebLogic Server 

B. Operating system 

C. JRockit 

D. Firmware for all components 

Answer: B,D 

Explanation: 

The operating system and firmware for all components are included in theExalogicBase Image that is installed at the factory. 


Q76. What is the main difference between a multi-datasource and an Active GridLink datasource? 

A. There is no difference. They are just different terms referring to the same construct and capability. 

B. An Active GridLink datasource is able to respond to FAN events to provide Fast Connection Failover (FCF), Runtime Connection Load-Balancing (RCLB), and RAC instance graceful shutdown. 

C. An Active GridLink datasource is designed specifically for Exadata and cannot be used with any other RAC database. 

D. A multi-datasource is meant to work only with non-Oracle high-availability datasources. 

Answer: B 

Reference:http://www.oracle.com/technetwork/middleware/weblogic/gridlink-rac-wp- 

494900.pdf(Active Gridlink for Rac, first paragraph) 

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 (FAN) With Active GridLink, WebLogic subscribes to the database's Fast Application Notification (FAN) events using Oracle Notification Services (ONS). This allows the 

WebLogic connection pool to make more informedruntime load-balancing decisionbased on the current workload of each RAC node. By sending database calls to the node with lowest current workload, the average latency of user request/response times is reduced. 

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 (FCF) Additionally, Active GridLink uses Fast Connection Failover (FCF), which also uses the notification events, to enable rapid database failure detection for greater applicationresilience. This feature also eases the system management overhead by allowing 

WebLogic to automatically reconfigure its connection pool, in the event of planned additions or removals of RAC nodes. 

Note: A new technology component has been added to WebLogic Server onExalogiccalled 'Active 

GridLink for RAC (Real Application Clusters)'. Active GridLink for RAC provides optimized 

WebLogic-to-Oracle RAC database connectivity by interfacing WebLogic Server directly with the Oracle RAC protocols. This new technology supersedes the existing WebLogic Server capability commonly referred to as 'Multi-Data-Sources'. Active GridLink for RAC provides more intelligent load-balancing across RAC nodes based on the current workload of each RAC node, faster connection failover if a RAC node fails and more transparent RAC node location management. Active GridLink is also able to handles global transactions more optimally, where multiple individual database operations have been encapsulated into a single atomic transaction, by the enterprise Java application. The net effect is, for enterprise Java applications involving intensive database work, applications achieve a higher level of availability with better throughput with reduced and more consistent response times. In addition to the performance benefits, Active GridLink for RAC (figure 3), also simplifies the configuration of Data Sources in WebLogic Server, reducing the number of configuration artifacts required for Oracle RAC connectivity and mostly eliminating RAC Service configuration changes from having a corresponding change in WebLogic Server. 

Reference: OracleExalogicElastic Cloud: Software Overview, Oracle White Paper