Oracle 1Z0-468 Online Practice Questions and Exam Preparation

Oracle 1Z0-468 Online Questions & Answers

• Question 1:

  Consider an application using a Coherence partitioned cache to store HTTP session data. There is a load balancer that performs client based affinity (or "sticky load balancing"), meaning that requests that come from a particular user will be routed to the same application server every time. Most user requests will read from the session, thus making near caching topology a good fit.

  Which near cache configuration matches the requirements for this application?

  A. AUTO
  B. NONE
  C. ALL
  D. PRESENT
  D. PRESENT

• Question 2:

  What three operations can an EM_PROVISIONONG_DESIGNER perform that an EM_PROVISIONONG_OPERATOR cannot? (Choose three.)

  A. Create profiles, components, and directives in the Software Library.
  B. Access provisioning profiles in the Software Library.
  C. Customize the default deployment procedure.
  D. Create deployment procedure templates.
  E. There is no difference in the type of operations that these two users can perform.
  A. Create profiles, components, and directives in the Software Library.
  C. Customize the default deployment procedure.
  D. Create deployment procedure templates.

• Question 3:

  Which type of appliance would you use to package custom applications into an appliance?

  A. WebLogic Server appliance
  B. external appliance
  C. generic appliance
  D. database appliance
  E. Oracle Tuxedo appliance
  A. WebLogic Server appliance

• Question 4:

  You notice the following message in one of your cache server logs:

  

  Which statement correctly explains this message?

  A. Member 102 received a MemberLeft message from the senior member (member 1) that member 74 has left the cluster.
  B. Member 1 received a MemberLeft message from the senior member (member 74) that member 102 has left the cluster.
  C. Member 1 received a MemberLeft message from the senior member (member 102) that member 74 has left the cluster.
  D. Member 74 received a MemberLeft message from the senior member (member 1) that member 102 has left the cluster.
  A. Member 102 received a MemberLeft message from the senior member (member 1) that member 74 has left the cluster.

• Question 5:

  When an object placed into a cache implements the Java Runnable interface, Coherence will _______________.

  A. immediately schedule it to be an on the service thread of the cache in which it was placed
  B. do nothing; Coherence does not differentiate between types of value objects
  C. ultimately attempt to run the object on a free worker thread associated with the service of the cache in which the object was placed
  D. hand the object over to the Invocation service to invoke the run method
  A. immediately schedule it to be an on the service thread of the cache in which it was placed

• Question 6:

  With which three activities does Virtual Assembly Builder help? (Choose three.)

  A. maintaining flexibility for developers
  B. reducing runtime errors
  C. enabling full access to infrastructure
  D. creating a standardized model for IT
  E. automating provisioning of the entire application topology
  A. maintaining flexibility for developers
  D. creating a standardized model for IT
  E. automating provisioning of the entire application topology

• Question 7:

  A company relies on third-party web services for data.

  Which two Coherence features can be applied to shield its customers from anticipated spikes in demand of the web services, without suffering potential performance degradation? (Choose two.)

  A. dynamically increasing the partition count on a running server
  B. configuring an overflow scheme so that spikes are handled gracefully
  C. caching the results of the web service call with a configured expiration
  D. dynamically adding Coherence cache servers to the cluster
  B. configuring an overflow scheme so that spikes are handled gracefully
  D. dynamically adding Coherence cache servers to the cluster

• Question 8:

  An application frequently requests data (from s Coherence cache configured with a cache loader) that may not be available in the underlying data source. The cost of looking up data via the cache loader is expensive in terms of time and resources.

  To reduce these costs, which configuration should be used to cache the notion that an entry is not available?

  A. Modify the application to maintain a "misses" cache to keep track of the entries that were expected to be found in the other cache, but were recently not found.
  B. Configure a "cache-miss-scheme" on the appropriate cache.
  C. Modify the cache loader to maintain a "map" of entries not found, and consult this map before attempting to load an entry from the external source.
  D. This can't be achieved with Coherence.
  A. Modify the application to maintain a "misses" cache to keep track of the entries that were expected to be found in the other cache, but were recently not found.

• Question 9:

  Your application had experienced an OutOfMemoryError on one of the cache servers. You had configured the JVM to produce a heap dump when OutOfMemoryErrors occur. Your analysis of the heap dump indicates that approximately 90% of the heap is consumed by instances of com.tangosol.util.Binary.

  What configuration change will reduce the number of com.tangosol.util.Binary instances?

  A. Introduce a near cache for all partitioned caches.
  B. Increase the size of the thread pool for all cache services.
  C. Increase the expiry delay on all distributed-scheme backing maps.
  D. Lower the high-unit threshold on all distributed-scheme backing maps.
  B. Increase the size of the thread pool for all cache services.

• Question 10:

  A company has a billing and ordering application accessed by ten million subscribers. Some subscribers rarely log in, and others log in almost every day. The company's goal is to provide the quickest possible response to web requests.

  Accesses make repeated reads and occasional writes to user sessions, each of which is 4 KB.

  Which architecture meets these needs?

  A. a replicated cache, so that applications can always access data locally
  B. there is too much data for Coherence to be effective in this scenario
  C. a distributed cache with sticky sessions and near caching
  D. a small replicated cache for frequent users and database read-through
  C. a distributed cache with sticky sessions and near caching