30 November, 2020

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Total 75 questions Full Exam Access

Question 1

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?

Heap sizes should not be larger than 512 MB.

OS socket buffers should be at least 2 MB.

Avoid OS memory swapping/paging by not exhausting physical RAM.

Do not exceed one JVM per core.

Question 2

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?

Introduce a near cache for all partitioned caches.

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

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

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

Question 3

Which two mechanisms are explicitly monitored to determine death of a cluster member? (Choose two.)

garbage collection

stuck threads

heartbeats

TCP socket connections

Question 4

What is the correct order of API calls to perform an end-to-end assembly deployment operation?

UploadAssemblyArchive -> RegisterAssemblyArchive -> CreateAssemblyInstance -> DeployAssemblyInstance -> UndeployAssemblyInstance -> DeleteAssemblyInstance -> UnregisterAssemblyArchive -> DeleteAssemblyArchive

CreateAssemblyInstance -> UploadAssemblyArchive -> RegisterAssemblyArchive -> DeployAssemblyInstance -> UndeployAssemblyInstance -> UnregisterAssemblyArchive -> DeleteAssemblyArchive -> DeleteAssemblyInstance

UploadAssemblyArchive -> RegisterAssemblyArchive -> DeployAssemblyInstance -> UndeployAssemblyInstance -> UnregisterAssemblyArchive -> DeleteAssemblyArchive

RegisterAssemblyArchive -> UploadAssemblyArchive -> DeployAssemblyInstance -> UndeployAssemblyInstance -> DeleteAssemblyArchive -> UnregisterAssemblyArchive

Question 5

With which WLS license is WLS Management Pack EE included?

WebLogic Suite

WebLogic Server Standard Edition

WebLogic Server Enterprise Edition

WebLogic Server EE or WebLogic Suite

WLS Management Pack is not included in any of the WLS packs

Question 6

How would you create an SLA based on the “JVM Runtime Up” metric for a specific WLS server?

Deploy JVM Diagnostics and set a threshold on the JVMD agent up time.

Create a Service target that uses the WLS Domain as its system, and the JVM Runtime as itsperformance metri

Configure SLA by using that metric.

Define a threshold on the metric on the All Metrics page, and define a rule to create an Event for that inciden

Define an SLA on the count of Incidents.

You cannot create an SLA on JVM-related metrics.

Question 7

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?

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.

Configure a “cache-miss-scheme” on the appropriate cache.

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.

This can\'t be achieved with Coherence.

Question 8

Which system property is used to customize a Coherence deployment configuration for different environments?

tangosol.coherence.cacheconfig

tangosol.coherence.site

tangosol.coherence.management

tangosol.coherence.override

Question 9

Which are two key factors in deciding when to configure OTD for SDP support?

number of connections that OTD needs to manage

size of the payload that will be load balanced

whether Oracle Traffic Director is deployed with InfiniBand fabric

request rate

Question 10

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

WebLogic Server appliance

external appliance

generic appliance

database appliance

Oracle Tuxedo appliance

Question 11

Which statement describes the difference between the Runtime Analyzer and JRockit Flight Recorder?

Only Runtime Analyzer allows detailed heap analysis.

Only Flight Recorder allows “back-in-time” analysis.

Thread deadlock analysis is not possible in Flight Recorder.

Flight Recorder cannot be run in an "always-on" mode.

Flight Recorder causes significantly higher processor overhead than Runtime Analyzer.

Question 12

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?

512 GB

1 GB

2 GB

4 GB

Question 13

What is the first step towards creating an appliance?

introspection of an installed system

introspection of a VM template

fileset capture

template creation

Question 14

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.)

dynamically increasing the partition count on a running server

configuring an overflow scheme so that spikes are handled gracefully

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

dynamically adding Coherence cache servers to the cluster

Question 15

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

java.io.*

java.util.*

java.swing.*

java.sql.*

java.awt.*

Question 16

What is the main method used to collect the monitoring data of a Coherence cluster, its nodes, and caches?

Enterprise Manager agent on every host, querying JMX data from nodes running on that host

one central Enterprise Manager agent, querying JMX data from each node in the cluster

JVMD agent collecting data trough sampling of the JVM for each node

Enterprise Manager agent on every host, querying JMX data from nodes running on the host, and a central Enterprise Manager agent querying JMX data from a management node for cluster-level

one central Enterprise Manager agent querying JMX data from a single management node

Question 17

What two sources can be used to provision a WLS domain? (Choose two.)

WebLogic Home Gold Image

TAR file on network desktop

TAR file on local desktop

WebLogic Domain Provisioning Profile

Middleware Home Gold Image

Question 18

Which Java command would list all the running Java applications on a system?

jpsm -m

jlist -m

jproc -m

jplist -m

jps -m

Question 19

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 replicated cache, so that applications can always access data locally

there is too much data for Coherence to be effective in this scenario

a distributed cache with sticky sessions and near caching

a small replicated cache for frequent users and database read-through

Question 20

What could cause an AddTargetUser operation to fall with a 401 or a 403 error?

Virtual Assembly Builder Deployer application is down.

The user whose credentials were used to connect to Virtual Assembly Deployer has not been granted the Cloud Admin role.

A connection between Virtual Assembly Builder Deployer and oracle VM Manager resource pool has not been configured.

The Oracle VM Manager Admin user, whose credentials were used in the createTarget operation, has not been granted the Application Admin role.

Question 21

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

maintaining flexibility for developers

reducing runtime errors

enabling full access to infrastructure

creating a standardized model for IT

automating provisioning of the entire application topology

Question 22

Which action do you take when deploying Oracle HTTP Server to ensure all client communications within OHS are confidential?

Deploy OHS in A DMZ.

Configure all OHS Listeners to use SSL.

Nothing; all client communications are confidential.

This configuration is not possible.

Use a network firewall.

Question 23

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

Applications Deployments

SOA Composites

WLS Domains

WLS Managed Servers

Oracle ESB

Question 24

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

manage multiple domains centrally

perform in-depth JVM diagnostics

perform user-session diagnostics

trace transactions across multi-tier environments

perform disaster recovery operations

perform full session replay

Question 25

What is the primary purpose of the Middleware Diagnostics Advisor (MDA) included in WLS Management Pack EE?

to automate the SQL tuning process by comprehensively exploring all the possible ways of tuning a SQL statement

to facilitate proactive performance and availability management by auto-finding problems and suggesting solutions

to find configuration problems by comparing WLS configuration to a Gold Image configuration

to provide comprehensive advice on how to optimize schema design in order to maximize application performance

to analyze the EM configuration and suggest configuration changes that will extend the stability of EM

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Total 75 questions Full Exam Access