Oracle 1z0-468 Courses 2021

NEW QUESTION 1
Which two components are required as part of any EM deployment? (Choose two.)

• A. Oracle Management Service
• B. Oracle Management Repository
• C. Oracle Ops Center
• D. BI Publisher
• E. Software Library

Answer: AB

Explanation:
https://docs.oracle.com/cd/B19306_01/em.102/b40103/pre-installation_requirements.htm#CHDEEJEB

NEW QUESTION 2
A Coherence node dies and is removed from a cluster.
What two actions occur if that node was part of a distributed cache where backup_count = 1? (Choose two.)

• A. Access is blocked to all operations while the cluster is rebalanced.
• B. Data is re-partitioned so that all data is accessible again.
• C. Partitions are moved so that the data is balanced among remaining nodes.
• D. Backup partitions are promoted to be primary, and new backups are created.

Answer: AC

NEW QUESTION 3
Your data client query needs to produce a fast initial response. Which two approaches will optimize your query? (Choose two.)

• A. Use a LimitFilter to limit the result set returned.
• B. Use a near cache to cache results locally to be re-used.
• C. Wrap the filter by using a PartitionFilter.
• D. Re-order the filter criteria.
• E. Access the keys first and then the values.

Answer: BD

NEW QUESTION 4
What is the primary purpose of the Middleware Diagnostics Advisor (MDA) included in WLS Management Pack EE?

• A. to automate the SQL tuning process by comprehensively exploring all the possible ways of tuning a SQL statement
• B. to facilitate proactive performance and availability management by auto-finding problems and suggesting solutions
• C. to find configuration problems by comparing WLS configuration to a Gold Image configuration
• D. to provide comprehensive advice on how to optimize schema design in order to maximize application performance
• E. to analyze the EM configuration and suggest configuration changes that will extend the stability of EM

Answer: B

Explanation:
Reduce problem resolution time through middleware diagnostics advisor which provides “root cause” findings in context of the most relevant configuration parameters and offers suggestions for each finding.
s:

NEW QUESTION 5
Which tool is not shipped with the JRockit JDK?

• A. Mission Control
• B. Flight Recorder
• C. Studio Profiler
• D. Memory Leak Detector

Answer: D

NEW QUESTION 6
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.

Answer: A

NEW QUESTION 7
Which four components are included in WLS Management Pack? (Choose four.)

• A. Real User Monitoring
• B. JVM Diagnostics
• C. Business Transaction Management
• D. Lifecycle Management
• E. Configuration Management
• F. Ops Center

Answer: BCDE

NEW QUESTION 8
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

Answer: D

NEW QUESTION 9
Which two actions can be used to create/add an index in Coherence? (Choose two.)

• A. ValueExtractor
• B. Comparator
• C. QueryMap
• D. MapIndex
• E. SimpleMapIndex

Answer: AC

NEW QUESTION 10
What is the correct order of API calls to perform an end-to-end assembly deployment operation?

• A. UploadAssemblyArchive -> RegisterAssemblyArchive -> CreateAssemblyInstance -> DeployAssemblyInstance -> UndeployAssemblyInstance -> DeleteAssemblyInstance -> UnregisterAssemblyArchive -> DeleteAssemblyArchive
• B. CreateAssemblyInstance -> UploadAssemblyArchive -> RegisterAssemblyArchive -> DeployAssemblyInstance -> UndeployAssemblyInstance -> UnregisterAssemblyArchive -> DeleteAssemblyArchive -> DeleteAssemblyInstance
• C. UploadAssemblyArchive -> RegisterAssemblyArchive -> DeployAssemblyInstance -> UndeployAssemblyInstance -> UnregisterAssemblyArchive -> DeleteAssemblyArchive
• D. RegisterAssemblyArchive -> UploadAssemblyArchive -> DeployAssemblyInstance -> UndeployAssemblyInstance -> DeleteAssemblyArchive -> UnregisterAssemblyArchive

Answer: B

NEW QUESTION 11
Assume that network latency between two data centers is 5 milliseconds with minimal packet loss.
Identify two problems with running one Coherence cluster that spans these two data centers (Choose two.)

• A. Outage in the WAN link can cause split brain.
• B. Access and writes to data takes longer to complete.
• C. Total loss of power in one data center can lead to split brain.
• D. Network latency will lead to cluster instability.

Answer: AB

NEW QUESTION 12
Identify four components of the Oracle Cloud Application Foundation. (Choose four.)

• A. WebLogic Server
• B. Database
• C. Virtual Assembly Builder
• D. Exalogic Elastic Cloud Software
• E. Tuxedo
• F. Coherence

Answer: ACEF

NEW QUESTION 13
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.*

Answer: ABE

NEW QUESTION 14
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.

Answer: BD

NEW QUESTION 15
Which configuration file must a user edit to configure Oracle HTTP Server?

• A. httpd.conf
• B. obj.conf
• C. workers.properties
• D. magnus.conf
• E. oraclehttp.conf

Answer: A

NEW QUESTION 16
Which two mechanisms are explicitly monitored to determine death of a cluster member? (Choose two.)

• A. garbage collection
• B. stuck threads
• C. heartbeats
• D. TCP socket connections

Answer: CD

Explanation:

Death detection works by creating a ring of TCP connections between all cluster members. TCP communication is sent on the same port that is used for cluster UDP communication. Each cluster member issues a unicast heartbeat, and the most senior cluster member issues the cluster heartbeat, which is a broadcast message. Each cluster member uses the TCP connection to detectthe death of another node within the heartbeat interval. Death detection is enabled by default and is configured within the <tcp-ring-listener> element.
s:

NEW QUESTION 17
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.)

• A. Each cache server will be responsible for more primary and backup data from dcache.
• B. The size of index data in each cache server is likely to grow.
• C. The size of rcache on each node will grow.
• D. Updates to rcache will result in more network traffic per machine.
• E. Updates to dcache will result in more network traffic per machine.

Answer: ABE

NEW QUESTION 18
What could cause an AddTargetUser operation to fall with a 401 or a 403 error?

• A. Virtual Assembly Builder Deployer application is down.
• B. The user whose credentials were used to connect to Virtual Assembly Deployer has not been granted the Cloud Admin role.
• C. A connection between Virtual Assembly Builder Deployer and oracle VM Manager resource pool has not been configured.
• D. The Oracle VM Manager Admin user, whose credentials were used in the createTarget operation, has not been granted the Application Admin role.

Answer: B

NEW QUESTION 19
A customer is witnessing a lot of contention while accessing and updating a cached item. Which feature alleviates the connection by shortening the time that the object is locked?

• A. Near Cache
• B. Entry Processors
• C. Transaction Framework
• D. off-heap storage

Answer: C

NEW QUESTION 20
What is the difference between Entry Processors and Aggregators?

• A. Entry Processors require a key or a set of keys, whereas Aggregators require filters.
• B. Entry Processors can skip the network by executing against near caches directly, whereas Aggregators must execute on storage members.
• C. Entry Processors are better suited to Map-Reduce operations than Aggregators.
• D. Aggregators are optimized for read-only access, whereas Entry Processors can modify cacheentries.

Answer: D

NEW QUESTION 21
What agent is used to collect the WLS server metrics that are available on the WLS All Metrics page?

• A. ADP Agent
• B. JVM Diagnostics Agent
• C. BTM Agent
• D. EM Agent
• E. JVMD Agent

Answer: B

NEW QUESTION 22
HOTSPOT
Which two statements are true about the HotSpot Concurrent Garbage Collector? (Choose two.)
MISSING

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
MISSING

NEW QUESTION 23
Your application is configured to use Service Guardian with default settings to protect against stuck service threads. The application runs a set of EntryProcessors to perform various types of calculations. These calculations can take a few milliseconds, but occasionally take up to 30 minutes to process.
Which statement is true?

• A. The Service Guardian willprotect all of the applications EntryProcessor processes withoutdetecting any as stuck.
• B. The Service Guardian must be disabled for these longer EntryProcessors.
• C. The Service Guardian does not protect threads running user code like EntryProcessors.
• D. The EntryProcessor must issue manual heartbeats to the Service Guardian or risk being killed.

Answer: B

NEW QUESTION 24
What three actions can you perform while using Oracle Virtual Assembly Builder (Studio and/or Deployer)? (Choose three.)

• A. Create deployment plans.
• B. Create appliances and assemblies.
• C. Build and package.
• D. Transfer and deploy via Deployer.
• E. Back up and restore.

Answer: ABD

NEW QUESTION 25
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