1Z0-468 Online Practice Questions and Answers

Consider the following code:

If the initial stock amount was 15, and 5 different clients (in different JVMs) attempted to execute the same code simultaneously, what would be the resulting level of stock?

A. 20, because Coherence does implicit locking

B. 15, because a concurrency control exception will be thrown

C. 16, because of the lack of concurrency control

D. undefined, because of the lack of concurrency control

Which configuration can be used for enabling Coherence as an L2 Cache?

A. @Entity@CacheInterceptor (CoherenceReadCustomizer.class)public class Employee implements Serializable

B. @Entity@Customizer(CoherenceReadCustomizer.class)public class Employee implements Serializable

C. @Entity@Customizer(CoherenceReadWriteCustomizer.class)public class Employee implements Serializable

D. @Entity@CacheInterceptor (CoherenceInterceptor.class)public class Employee implements Serializable

In which three scenarios would you use JRockit Mission Control? (Choose three.)

A. finding hot methods

B. static mode analysis

C. tracking latencies

D. heap analysis

E. debugging with breakpoints

Your customer is a financial services company that uses a large compute grid (not Coherence) to do risk calculations. Objects representing risk scenarios are cached in Coherence. When these objects are updated, they are sent to the compute grid to recalculate risk via a continuous query cache. Assume that there are 100 compute servers in one data center and 100 GB of cached data. The customer is not worried about potential cluster instability, given their network design.

Which solution supports the customer's requirements? Keep in mind licensing costs and features by edition.

A. Coherence Standard Edition. Nothing special is needed and Standard Edition is the low- cost option.

B. Coherence Enterprise Edition, with the compute grid clients being storage-disabled cluster members.

C. Coherence Grid Edition, with the compute grid clients being storage-disabled Coherence cluster members.

D. Coherence Enterprise Edition, with the compute grid running against a set of Coherence*Extend proxies and continuous query cache on Coherence*Extend clients.

Which three areas are automatically optimized by the Oracle JDK ergonomics? (Choose three.)

A. Garbage Collector

B. Debugging options

C. Heap size

D. Class loader

E. Runtime compiler

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

A. to scale the amount of data accessed on the application or middleware tier

B. to offload shared services or databases on repeated reads

C. to accelerate complex RDBMS joins by storing data in memory

D. to reduce database load by batching and coalescing writes

E. to perform map-reduce aggregations of unstructured data

Which three packages are available in the JRockit VM? (Choose three.)

A. java.io.*

B. java.util.*

C. java.swing.*

D. java.sql.*

E. java.awt.*

The performance of your query is very slow.

Which two actions would you take to diagnose potential bottlenecks? (Choose two.)

A. Check that indexes are registered against the fields being queried.

B. Monitor the task execution time.

C. Use the QueryRecorder to see the query Trace and Explain plan.

D. Check that indexes are cached against the fields being queried.

E. Monitor the task performance time.

What three components are not part of EM and require separate installations? (Choose two.)

A. BTM Engine

B. RUEI Engine

C. JVM Diagnostics Engine

D. Application Discovery and Performance Management Engine

E. Ops Center

What three components of WLS can be managed by the WLS Management Pack EE?

A. Applications Deployments

B. SOA Composites

C. WLS Domains

D. WLS Managed Servers

E. Oracle ESB