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?（）

单项选择题WhichWebLogicoptimizationallowsonenon-XAresourcetoparticipateinadistributedtransaction?（）

A.enabling Pinned to Thread
B.enabling Logging Last Resource
C.increasing the Statement cache size
D.setting the statement cache type to LRU
E.setting the initial and maximum capacity to the same number

多项选择题AcustomerneedstoimplementaHighlyAvailablesolutionforJMSthathasaprimarydatacenterandabackup.Whichthreestepswouldyouperformwhendesigningyoursolution?（）

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.

单项选择题Acustomerhasacritical,performance-sensitivewebapplicationthatconnectstoamultinodeOracleRACdatabase.WhichfeatureofWebLogiccanprovidesignificantperformancebenefit?（）

A.The Web Session Affinity feature of Active GridLink for RAC
B.WebLogic Clustering  
C.The Transaction Affinity feature of Active GridLink for RAC
D.Coherence*Web Session Replication

多项选择题Acommonapproachtosolveapplicationperformanceissuesistoaddmorehardware.Whichtworeasonsdescribewhythisalonedoesnotalwayssolveperformanceproblems?（）

A.There may be a bottleneck in the application that additional hardware would not solve.
B.Adding more hardware is costly and time consuming.
C.Adding hardware at the application layer may place additional load on an already overloaded database, network appliance, or storage system.
D.Adding more hardware may introduce new configuration requirements that need to be tested.

单项选择题Acustomerclaimsthatwhileredeployingawebapplicationintheproductionsystemalltheircustomersarehavingtologinagain.Whatdoyourecommend?（）

A.Sessions can't be preserved when redeploying applications. The customer needs to consider redeployment during late nights when the traffic is low.  
B.Change the flag responsible for the development mode of their environment. In the production mode, all sessions are preserved while redeploying application.  
C.Change Hotspot to JRockit. Sessions can't be preserved on HotSpot when redeploying application. 
D.Use flag -version when redeploying the application. This will switch on the Side By Side deployment feature and preserve existing sessions.
E.Open a service request with Oracle Support. This is unexpected behavior. Sessions are  preserved without any extra settings.