Which WebLogic optimization allows one non-XA resource to participate in a distributed transaction?（）

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.

单项选择题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.