Question 1

______ is a familiar example of a data product based on well-built predictive models that do not achieve an optimal objective.

Select one

• a.Recommendation engine
• b.Predictive Revenue Modeling
• c.Python data products
• d.Big data forecasting

The correct answer is: Recommendation engine

Question 2

A four-step approach which is used to build or design data products:

• a.Big Data Principle Approach
• b.Drivetrain Approach
• c.Predict-and-optimise framework
• d.CRISP-DM

The correct answer is: Drivetrain Approach

Question 3

You are presented with the following data structure:

1
2
3
4
5
6
7
8

{
            _id: <User1>,
            username: “JohnDoe”,
            firstname: “John”,
            lastname: “Doe”,
            age: 20,
            groups: [“ polotics”, “news” ]
}

What type of database allows this sort of structure to be stored and retrieved using a non-structured querying language?

• a.MongoDB
• b.RDBMS
• c.OLAP
• d.Oracle

The correct answer is: MongoDB

Question 4

Your boss asks you about Hadoop Distributed File System, wanting to know how you would expand the storage capacity of your current Hadoop environment. You tell him you can:

• a.Add more servers to expand the storage capabilities.
• b.Start a new instance of Hadoop to handle the overflow.
• c.You canʼt add more space given the limitations of the program
• d.Add an additional instance of Hadoop to your cluster configuration

The correct answer is: Add more servers to expand the storage capabilities.

Question 5

Name the default engine used in new deployments of MongoDB for versions 3.2 or higher.

• a.SQL DBMS
• b.Snowflake
• c.WiredTiger
• d.MMAPv1

The correct answer is: WiredTiger

Question 6

Hadoop was started with Doug Cutting and Mike Cafarella in the year __ when they both started to work on ___ project.

• a.2002, Apache Nutch
• b.2001, Google NFS
• c.2000, Hadoop MapReduce
• d.2003, Hadoop YARN

The correct answer is: 2002, Apache Nutch

Question 7

Key-Value Storage, Document Storage, Graph Storage are types of:

• a.NoSQL
• b.DB2
• c.Oracle
• d.SQL Server

The correct answer is: NoSQL

Question 8

You are working on a Big Data analytics team and need to select an application that will allow for faster processing of a large amount of data. You want that processing to happen mostly in memory using a computing engine that allows for running most of those computations in memory. Which Big data tool is best suited in this context?

Select one

• a.Apache Spark
• b.HADOOP
• c.MangoDB
• d.Apache Kafka

The correct answer is: Apache Spark

Question 9

The following are cluster mangers except:

Select one: * a.YARN * b.Standalone deployment * c.Groovy * d.Apache Mesos

The correct answer is: Groovy

Question 10

Of the alternatives to Hadoop noted below, which claims to be more flexible and removes the limits on the number of files processed?

• a.CEPH
• b.ZFS
• c.HBase
• d.Cassandra

The correct answer is: CEPH