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Oracle Cloud Application Foundation Certified Implementation Specialist

Question No: 31

What is the first step towards creating an appliance?

  1. introspection of an installed system

  2. introspection of a VM template

  3. fileset capture

  4. template creation

Answer: D

Question No: 32

Which four actions can you perform by using features that are included in WLS management Pack EE? (Choose four.)

  1. manage multiple domains centrally

  2. perform in-depth JVM diagnostics

  3. perform user-session diagnostics

  4. trace transactions across multi-tier environments

  5. perform disaster recovery operations

  6. perform full session replay

Answer: A,B,E Explanation:

http://www.oracle.com/technetwork/oem/soa-mgmt/ds-em12c-wls-mgmt-pack-ee- 1552456.pdf(page 1)

Question No: 33

You are doing capacity planning for a Coherence application with one distributed cache (dcache), and one replicated cache (rcache). You have one index on dcache, and dcache has backup_count=1. Your requirement is that you must be able to tolerate one machine failure with no loss of data. You have three machines, each with 4 JVMs of 8 GB.

What three factors do you take into consideration in case of machine failure? (Choose three.)

  1. Each cache server will be responsible for more primary and backup data from dcache.

  2. The size of index data in each cache server is likely to grow.

  3. The size of rcache on each node will grow.

  4. Updates to rcache will result in more network traffic per machine.

  5. Updates to dcache will result in more network traffic per machine.

Answer: A,B,E

Question No: 34

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.)

  1. dynamically increasing the partition count on a running server

  2. configuring an overflow scheme so that spikes are handled gracefully

  3. caching the results of the web service call with a configured expiration

  4. dynamically adding Coherence cache servers to the cluster

Answer: B,D

Question No: 35

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?

  1. Introduce a near cache for all partitioned caches.

  2. Increase the size of the thread pool for all cache services.

  3. Increase the expiry delay on all distributed-scheme backing maps.

  4. Lower the high-unit threshold on all distributed-scheme backing maps.

Answer: B

Question No: 36

What are the three business drivers for cloud computing? (Choose three.)

  1. better resource utilization

  2. enterprise agility

  3. higher customer support quality

  4. ease of administration

  5. elastic scalability

Answer: A,D,E

Question No: 37

Which three generational spaces make up the HotStop heap? (Choose three.)

  1. Young Generation

  2. Internal Generation

  3. Old Generation

  4. Permanent Generation

  5. Persistent Generation

Answer: A,C,D

Question No: 38

You have developed and tested your Coherence application on a single physical machine by using the following operational configuration:

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What two configuration changes must be made to run your application on multiple physical machines using multicast? (Choose two.)

  1. Lower the logging severity level to 3.

  2. Change the unicast listener address to a non-loopback address.

  3. Increase the multicast listener time-to-live value.

  4. Specify a list of well-known addresses.

Answer: B,D Explanation:

https://docs.oracle.com/middleware/1212/coherence/COHAG/deploy_checklist.htm#COHA G5301

Question No: 39

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?

  1. Create and deploy a new assembly containing a single instance database appliance.

  2. Add a new single instance database appliance into the previously created assembly and redeploy it.

  3. Use the ScaleAppliance operation to scale up the deployed appliance instances from two to three.

  4. Use the createAssemblyInstance operation to create a new instance of the existing assembly and deploy the new assembly instance.

Answer: D

Question No: 40

Your application will store data in two partitioned caches, each configured for one backup. You have calculated the total amount of data to be 10 GB for the first cache, and 3 GB for the second cache. You plan to run 10 cache servers in total.

What is the minimum recommended JVM heap size for each cache server?

  1. 512 GB

  2. 1 GB

  3. 2 GB

  4. 4 GB

Answer: C Explanation:

When considering heap size, it is important to find the right balance. The lower bound is determined by per-JVM overhead (and also, manageability of a potentially large number of JVMs). For example, if there is a fixed overhead of 100MB for infrastructure software (for example, JMX agents, connection pools, internal JVM structures), then the use of JVMs with 256MB heap sizes results in close to 40% overhead for non-cache data. The upper bound on JVM heap size is governed by memory management overhead, specifically the maximum duration of GC pauses and the percentage of CPU allocated to GC (and other memory management tasks).

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