Oracle Oracle Certifications 1Z0-928 Questions & Answers

• Question 51:

  You are in a project with teams from other departments of the company. It is necessary to collaborate not only creative ideas but also the data with the other departments. In the Big Data Cloud Service, you need to copy data that is in very large files between HDFS on your cluster to their cloud storage.

  Which utility is more efficient for copying large data files?

  A. odcp

  B. ftp

  C. fastcopy

  D. scp

  Correct Answer: A

  Reference: https://docs.oracle.com/en/cloud/paas/big-data-cloud/csbdi/copy-data-odcp.html#GUIDAE8587AF-6538-43A6-A2F3-52D63E287788

• Question 52:

  Oracle Big Data Cloud provides a ready-to-use, open source Notebook utility you can use to create and code interactive exploratory analytical visualizations. What is the name of that Notebook utility?

  A. Jupiter

  B. Beaker Notebook

  C. Zeppelin Notebook

  D. Oracle Analytics Cloud

  Correct Answer: C

• Question 53:

  Oracle Data Integrator for Big Data offers customers with Enterprise big data Integration.

  What component does Oracle Data Integrator for Big Data use to give you the ability to solve your most

  complex and time-sensitive data transformation and data movement challenges?

  A. RDD

  B. Knowledge modules

  C. Predefined MapReduce job for data transformation

  D. Package scripts

  Correct Answer: B

  Reference: http://www.oracle.com/us/products/middleware/data-integration/odieebd-ds-2464372.pdf

• Question 54:

  ABC Media receives thousands of files every day from many sources. Each text-formatted file is typically 1-2 MB in size. They need to store all these files for at least two years. They heard about Hadoop and about the HDFS filesystem, and want to take advantage of the cost-effective storage to store the vast number of files.

  Which two recommendations could you provide to the customer to maintain the effectiveness of HDFS with the growing number of files?

  A. Consider breaking down files into smaller files before ingesting.

  B. Consider adding additional Name Nodes to increase data storage capacity.

  C. Reduce the memory available for namenode as 1-2 MB files don't need a lot of memory.

  D. Consider concatenating files after ingesting.

  E. Use compression to free up space.

  Correct Answer: AE

• Question 55:

  Which methods of Kafka deployment on Oracle Cloud does NOT provide SSH access?

  A. Oracle Event Hub Cloud Service Dedicated associated with Big Data Cloud

  B. Oracle Event Hub Cloud Service (Multi Tenant Version)

  C. Oracle Event Hub Cloud Service-Dedicated (Kafka as a service)

  D. Customer installed Kafka on Oracle Cloud Infrastructure

  Correct Answer: B

• Question 56:

  You need to enforce network encryption, as Kerberos authentication does not protect data as it travels through the network. Hadoop being a distributed system means that data must be transmitted over the network across machines.

  Which is NOT a network communication protocol used network encryption?

  A. Direct TCP/IP

  B. HTTPS

  C. SSI

  D. Hadoop RPC

  Correct Answer: A

• Question 57:

  Big Data Cloud has tools for easy provisioning, managing, and monitoring of Apache Hadoop clusters. Which component does Oracle Big Data Cloud use as the platform stack for cluster orchestration and provisioning?

  A. Cloudera Manager

  B. Apache Ambari

  C. MapR Control System

  D. Oracle Enterprise Manager

  Correct Answer: B

• Question 58:

  You have data in large files you need to copy from your Hadoop HDFS to other storage providers. You decided to use the Oracle Big Data Cloud Service distributed copy utility odcp.

  As odcp is compatible with Cloudera Distribution Including Apache Hadoop, which four are supported when copying files?

  A. Secure WebHDFS (SWebHDFS)

  B. Apache Hadoop Distributed File Service (HDFS)

  C. Apache Flume

  D. Hypertext Transfer Protocol (HTTP)

  E. Oracle Cloud Infrastructure Object Storage

  F. Apache Sqoop

  Correct Answer: ABDE

  Reference: https://docs.oracle.com/en/cloud/paas/big-data-cloud/csbdi/copy-data-odcp.html#GUID4049DB4F-2E9A-4050-AB6F-B8F99918059F

• Question 59:

  Which function is NOT a part of Kerberos?

  A. Kerberos offers Strong Authentication features.

  B. Kerberos authorizes SQL Access for Hive and Impala.

  C. Kerberos builds on symmetric key cryptography and requires a trusted third party.

  D. Kerberos works on the basis of tickets.

  Correct Answer: B

• Question 60:

  You have a 3-Rack Hadoop Cluster and you have configured HDFS with the replication factor set to 3. All Racks and Nodes are up and running.

  Which is the correct Data Replica layout by default?

  A. One replica on one node in Local Rack1, another replica on a node in a remote Rack2, and the last replica on the fastest node in the cluster.

  B. One replica on one node in Local Rack1, another replica on a node in a remote Rack2, and the last replica on a different node in the same remote Rack2.

  C. One replica on one node in Local Rack1, another replica on a node in a remote Rack2, and the last replica on a different node in Local Rack1.

  D. One replica on one node in Local Rack1, another replica on a node in a remote Rack2, and the last replica on a node in the remote Rack3.

  Correct Answer: A