Oracle Oracle Certifications 1Z0-928 Questions & Answers

• Question 11:

  When all the members of your team log in to their Oracle Cloud account, on the Dashboard they see two services: Oracle Big Data Cloud Service and Oracle Database Cloud Service. There is a lot of data in the Hadoop cluster of your Oracle Big Data Cloud Service.

  Which Oracle Big Data Connector will easily allow your database users to see the data in the Hadoop cluster?

  A. osch

  B. oxh

  C. od4h

  D. olh

  Correct Answer: D

  Reference: https://docs.oracle.com/cd/E27101_01/doc.10/e27365/start.htm#CHDJIBGI

• Question 12:

  Which three statements are true about YARN?

  A. It handles and schedules resource requests.

  B. Yarn can run applications that follow MapReduce and Non MapReduce Model like Graph Processing.

  C. Yarn does NOT support running multiple applications in a single Hadoop Cluster.

  D. It provides Daemons and API to develop generic distributed applications.

  E. Yarn model Functionality is identical to Apache Hadoop MapReduce (MR1).

  F. Yarn combines the two major functionalities of Job tracker: Resource Management and Job Scheduling

  Correct Answer: ABF

  Reference: https://adtmag.com/blogs/watersworks/2012/08/apache-yarn-promotion.aspx

• Question 13:

  Big Data Cloud provides you the agility to rapidly and securely build, deploy, and grow your big data platform. It can easily scale to your varying workload demand. Which statement is NOT true regrading Oracle Big Data Cloud's feature in agility?

  A. You must scale Compute nodes and Storage nodes together at the same time.

  B. You can elastically scale only Storage nodes.

  C. You can scale Compute nodes and Storage nodes independently.

  D. You can elastically scale only Compute nodes.

  Correct Answer: A

• Question 14:

  HDFS Transparent Encryption protects Hadoop data when you perform read and write operations on encrypted zones. The disk where the HDFS directories are stored will be automatically encrypted and decrypted. HDFS Transparent Encryption must have Kerberos enabled and two principals are created as part of the Kerberos configuration.

  When are the two principals created?

  A. They are created when you create a cluster with Security Setup enabled.

  B. They are automatically created in Big Data Cloud Service for Kerberos with your Oracle Cloud account.

  C. They are created when you create an HDFS directory.

  D. They are created when you create your service instance with Security Setup enabled.

  Correct Answer: AD

  Reference: https://docs.oracle.com/en/cloud/paas/big-data-cloud/csbdi/using-hdfs-transparentencryption.html#GUID-9DD5DC54-B7FF-4DCA-ACB6-9118F602DA11

• Question 15:

  Which component is NOT a process component of YARN?

  A. Container

  B. Node Manager

  C. Resource Manager

  D. Data Node

  Correct Answer: D

• Question 16:

  On which open-source processing engine is Oracle Big Data Cloud (BDC) Strategy based on?

  A. Spark

  B. Apache Flink Scalable Batch and Stream Data Processing

  C. Apache Apex

  D. Apache Storm

  Correct Answer: A

• Question 17:

  Oracle Event Hub Cloud Service is supported by many of the Oracle Cloud platforms. Which two are options of where you can deploy Event Hub Cloud Service (Apache Kafka)?

  A. in Oracle Public Cloud Data centers

  B. in Azure data centers

  C. in Rackspace data centers

  D. in AWS or Azure data centers

  E. in the Customer's on-premises data centers

  Correct Answer: AE

  Reference: https://cloud.oracle.com/en_US/event-hub/features

• Question 18:

  Where do you store the version history of Schemas for the Event Hub Cloud Service?

  A. Object store

  B. HDFS

  C. Schema Registry

  D. Archival storage

  Correct Answer: C

  Reference: https://docs.oracle.com/en/cloud/paas/event-hub-cloud/ehsra/index.html

• Question 19:

  Which two are the supported SDKs to manage data in Oracle Big Data Manager?

  A. Scala

  B. HTML

  C. Ruby

  D. Python

  E. Java

  Correct Answer: DE

  Reference: https://docs.oracle.com/en/cloud/paas/big-data-cloud/cbdmg/manage-data-oracle-big-datamanager-sdks.html

• Question 20:

  What is the function of a SHUFFLE phase in the MAPREDUCE processing framework?

  A. This phase is to optimize resource utilization by moving mappers to the other nodes.

  B. This phase will move intermediate data from the mapper to the reducers.

  C. This phase provides fault tolerance by moving mappers from the failed nodes to running nodes.

  D. This phase is used to reduce the values associated with the intermediate keys.

  Correct Answer: B

  Reference: https://stackoverflow.com/questions/22141631/what-is-the-purpose-of-shuffling-and-sortingphase-in-the-reducer-in-map-reduce