Oracle 1z0-468 Free Practice Questions

NEW QUESTION 1
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 2
You are using Coherence to store state data that gets read frequently and updated only occasionally. Only 100 or so clients are logged in at any time, and state data is retrieved at login. You are running out of physical memory on the cache server tier, but CPU and network utilization is low. You have 100 GB Solid-State Drives on every system, including clients. You would also like to provide faster access to state data for logged-in users.
Which configuration should you use for your system?

• A. Configure Elastic Data on your clients with a near cache.
• B. Configure a near cache on your client and a RAM Journal on your cache servers.
• C. Configure a near cache on your client and a Flash Journal on your cache servers.
• D. Because near caching does not work with Elastic Data, configure a near cache and an eviction policy on the cache servers.

Answer: C

NEW QUESTION 3
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 4
Which three metrics are commonly used to evaluate garbage collector performance? (Choose three.)

• A. Throughput
• B. Pause time
• C. Method area
• D. Native threads
• E. Heap size

Answer: ABE

Explanation:
http://www.oracle.com/technetwork/java/javase/tech/memorymanagement-whitepaper-1- 150020.pdf(page 5, performance metrics)

NEW QUESTION 5
Which system property is used to customize a Coherence deployment configuration for different environments?

• A. tangosol.coherence.cacheconfig
• B. tangosol.coherence.site
• C. tangosol.coherence.management
• D. tangosol.coherence.override

Answer: A

NEW QUESTION 6
When integrating a CacheStore with a database, which technique is correct for managing database connections?

• A. Use a connection pool provided by an application server, the JDBC driver, or a third party.
• B. Create a new connection every time a CacheStore method is invoked.
• C. Create a new connection in the CacheStore constructor and store a to it that can be accessed by the CacheStore methods.
• D. Configure Coherence to use its built-in capabilities to manage connections.

Answer: A

NEW QUESTION 7
What information is needed in the process of creating a patch template for WLS Domain?

• A. one or more patches to apply
• B. the domain target
• C. stage directory (if not already staged)
• D. WLS Domain Administrator credentials, and Host credentials
• E. Patch Plan

Answer: D

NEW QUESTION 8
What two sources can be used to provision a WLS domain? (Choose two.)

• A. WebLogic Home Gold Image
• B. TAR file on network desktop
• C. TAR file on local desktop
• D. WebLogic Domain Provisioning Profile
• E. Middleware Home Gold Image

Answer: CE

NEW QUESTION 9
Which three plug-ins are pre-installed with EM 12c?

• A. Oracle Fusion Middleware
• B. Oracle Cloud Application
• C. Oracle Database
• D. Oracle MOS (My Oracle Support)
• E. Exalogic Elastic Cloud Infrastructure

Answer: ADE

NEW QUESTION 10
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 11
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 12
With which WLS license is WLS Management Pack EE included?

• A. WebLogic Suite
• B. WebLogic Server Standard Edition
• C. WebLogic Server Enterprise Edition
• D. WebLogic Server EE or WebLogic Suite
• E. WLS Management Pack is not included in any of the WLS packs

Answer: C

NEW QUESTION 13
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

Answer: ADE

NEW QUESTION 14
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

Answer: ABC

NEW QUESTION 15
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?

• A. 512 GB
• B. 1 GB
• C. 2 GB
• D. 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).
s:

NEW QUESTION 16
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

Answer: A

NEW QUESTION 17
Which component is optimized for the JRockit VM?

• A. swing-based desktop applications
• B. browser-based applets
• C. embedded devices
• D. server-side applications
• E. mobile phones

Answer: D

Explanation:
The Oracle JRockit JDK includes the Oracle JRockit Java Virtual Machine (JVM), which is developed uniquely for server-side applications and optimized for Intel architectures, ensuring reliability, scalability, and manageability for Java applications.
s:

NEW QUESTION 18
Which is a valid reason for using Coherence Elastic Data?

• A. You want to cache more that the total amount of RAM on your systems.
• B. You want to extend your cluster across a WAN.
• C. Data must be persisted to disk to ensure fault tolerance.
• D. You want to store data on very large heaps.

Answer: A

Explanation:
http://www.oracle.com/technetwork/tutorials/tutorials-1694910.pdf

NEW QUESTION 19
Which four actions can you perform by using features that are included in WLS management Pack EE? (Choose four.)

• A. manage multiple domains centrally
• B. perform in-depth JVM diagnostics
• C. perform user-session diagnostics
• D. trace transactions across multi-tier environments
• E. perform disaster recovery operations
• F. perform full session replay

Answer: ABE

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

NEW QUESTION 20
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 21
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