Free Oracle 1z0-468 Exam Dumps Questions & Answers

Identify three situations where Coherence is used (Choose three.)

• A.to perform map-reduce aggregations of unstructured data
• B.to scale the amount of data accessed on the application or middleware tier
• C.to accelerate complex RDBMS joins by storing data in memory
• D.to offload shared services or databases on repeated reads
• E.to reduce database load by batching and coalescing writes

Which two conditions ensure enabling SSL Mutual Authentication (two-way SSL?) (Choose two.)

• A.The server trusts the client and the client trusts he server.
• B.The client is authorized to accessindex.html.
• C.There is confidential communication between client and server.
• D.Clients can enter the DMZ.

Which is a valid reason for using Coherence Elastic Data?

• A.Data must be persisted to disk to ensure fault tolerance.
• B.You want to extend your cluster across a WAN.
• C.You want to store data on very large heaps.
• D.You want to cache more that the total amount of RAM on your systems.

After going through a sizing exercise, you determine that your application will need 100 storage-enabled JVMs with 4 GB heaps. You have 10 physical machines with 16 cores and 32 GB of RAM.
Which performance-tuning best practice would be violated by deploying your application on these machines?

• A.Avoid OS memory swapping/paging by not exhausting physical RAM.
• B.OS socket buffers should be at least 2 M
• C.Heap sizes should not be larger than 512 MB.
• D.Do not exceed one JVM per core.

An Oracle RAC Database appliance was initially deployed with two database instances.
The load on the database has now increased and another instance needs to be provisioned.
How would you add one more instance of the earlier deployed appliance?

• A.Add a new single instance database appliance into the previously created assembly and redeploy it.
• B.Use the ScaleAppliance operation to scale up the deployed appliance instances from two to three.
• C.Create and deploy a new assembly containing a single instance database appliance.
• D.Use the createAssemblyInstance operation to create a new instance of the existing assembly and deploy the new assembly instance.