Question 1

Big data requires effectively processing:
A) a single data type (numeric).
B) two data types (text and numeric).
C) many data types.
D) a single data type (text).

Accepted Answer

Big data involves processing large volumes of data from various sources, including text, numeric, images, and more. Therefore, it requires effectively processing many data types.

Question 2

The three 'v's commonly associated with big data include:
A) viewable, volume, and variety.
B) volume, variety, and velocity.
C) verified, variety, and velocity.
D) vigilant, viewable, and verified.

Accepted Answer

The commonly associated three 'v's with big data include volume, variety, and velocity. "Volume" refers to the vast amount of data that is generated and collected, "variety" refers to the different types of data that are available (structured, unstructured, and semi-structured), and "velocity" refers to the speed at which data is generated and must be processed.

Question 3

________ is the most popular key-value store NoSQL database management system.
A) Access
B) Apache Cassandra
C) Neo4j
D) Redis

Accepted Answer

Among the given options, Redis is the most popular key-value store NoSQL database management system. Apache Cassandra and Neo4j are also popular NoSQL databases but they are not key-value stores like Redis. Access is a relational database management system and not a NoSQL database.

Question 4

The NoSQL model that incorporates 'column families' is called a:
A) key-value score.
B) document store.
C) wide-column store.
D) column-SQL database.

Accepted Answer

The NoSQL model that incorporates column families is called a wide-column store. In this model, data is organized into column families, which are groups of related columns that are stored together. This allows for efficient querying of large datasets and flexible schema design. Option A and B are incorrect as they do not involve column families, and option D is not a recognized type of NoSQL database.

Question 5

Big Data includes:
A) large volumes of data with many different data types that are processed at very high speeds.
B) large volumes of data entry with a single data type processed at very high speeds.
C) large volumes of entity relationship diagrams (ERD) with many different data types that are processed at very high speeds.
D) large volumes of entity relationship diagrams (ERD) with a single data type processed at very high speeds.

Accepted Answer

Big Data refers to the analysis of large and complex sets of data, with varying data types, generated at high speeds from different sources. Therefore, option A is the best choice as it describes the characteristics of Big Data accurately. B, C, and D do not accurately describe the nature of Big Data.

Question 6

An organization that decides to adopt the most popular NoSQL database management system would select:
A) Access.
B) MongoDB.
C) Neo4j.
D) Redis.

Accepted Answer

MongoDB is currently the most popular NoSQL database management system according to DB-Engines ranking, making it a logical choice for an organization looking to adopt one. Access is not a NoSQL database management system, and Neo4j and Redis are less popular options.

Question 7

At a basic level, analytics refers to:
A) collecting data.
B) conducting a needs analysis.
C) analysis and interpretation of data.
D) normalizing data.

Accepted Answer

Analytics involves analyzing and interpreting data to gain insights and make informed decisions. Collecting data (A) is just the first step in the process, and conducting a needs analysis (B) is a specific type of analysis that focuses on identifying the needs of a particular group or organization. Normalizing data (D) is also important, but it is typically a technical task that occurs during the data preparation stage of the analytics process.

Question 8

The NoSQL model that is specifically designed to maintain information regarding the relationships (often real-world instances of entities) between data items is called a:
A) key-value score.
B) document store.
C) wide-column store.
D) graph-oriented database.

Accepted Answer

A graph-oriented database is specifically designed for managing relationships between data items represented as nodes and edges in a graph. It allows for more flexible and efficient querying of complex relationships compared to other NoSQL models such as key-value and document stores, which are more suitable for simpler data structures.

Question 9

NoSQL systems allow ________ by incorporating commodity servers that can be easily added to the architectural solution.
A) scaling down
B) scaling out
C) scaling up
D) scaling over

Accepted Answer

NoSQL systems are designed to handle large amounts of data and heavy workloads, and scaling out by adding more commodity servers is a common approach to achieve this. Scaling down reduces resources and is not suitable for handling large amounts of data. Scaling up involves adding more resources to a single server, which may not be cost-effective compared to scaling out. Scaling over is not a recognized scaling term.

Question 10

Big data:
A) requires a normalized dataset to 3ʳᵈ Normal Form.
B) does not require a strictly defined data model.
C) requires a strictly defined schema.
D) requires a normalized dataset to BCNF.

Accepted Answer

Big data does not require a strictly defined data model or schema. In fact, one of the key features of big data is its ability to handle and process large volumes of unstructured or semi-structured data. While data normalization can still be valuable for certain analysis, it is not a requirement for big data.

Question 11

________ generally processes the largest quantities of data.
A) Operational databases
B) Transaction processing
C) Big data
D) Data marts

Accepted Answer

The answer of ________ generally processes the largest quantities of...

Question 12

The NoSQL model that includes a simple pair of a key and an associated collection of values is called a:
A) key-value score.
B) document store.
C) wide-column store.
D) graph database.

Accepted Answer

A simple pair of a key and an associated collection of values is referred to as a key-value store, which is a type of NoSQL database. Therefore, option A is the best choice. Document stores like MongoDB, wide-column stores like Cassandra, and graph databases like Neo4j are other NoSQL models, but they do not match the definition given in the question.

Question 13

NoSQL focuses on:
A) avoidance of replication of data.
B) minimizing storage space.
C) normalized data.
D) flexibility.

Accepted Answer

NoSQL focuses on providing a more flexible data model than traditional relational databases, allowing for easier storage and management of unstructured and semi-structured data types. While minimizing space and preventing data duplication can be benefits of NoSQL, they are not its primary focus. Normalization, a common practice in relational databases, is not typically used in NoSQL databases.

Question 14

NoSQL includes data storage and retrieval:
A) based on the relational model.
B) based on normalized tables.
C) not based on the relational model.
D) not based on data.

Accepted Answer

NoSQL databases are designed to work with unstructured or semi-structured data that do not fit well into the traditional relational database model. They use a variety of different data models, including document-oriented, key-value, and graph-based systems. NoSQL databases are often used for big data applications where scalability and flexibility are more important than strict data consistency and relational constraints.

Question 15

An organization that requires a sole focus on performance with the ability for keys to include strings, hashes, lists, and sorted sets would select ________ database management system.
A) Access
B) Excel Spreadsheet
C) Neo4j
D) Redis

Accepted Answer

Redis is a NoSQL database that is specifically designed for performance and scalability. It supports storage of strings, hashes, lists, and sorted sets, making it a great choice for organizations that require a sole focus on performance. Access and Excel are relational databases that do not offer the same level of performance as Redis. Neo4j is a graph database that is optimized for handling complex relationships between data, but may not be the best choice for organizations solely focused on performance.

Question 16

Apache Cassandra is a leading producer of ________ NoSQL database management systems.
A) key-value store
B) wide-column
C) relational
D) graph

Accepted Answer

Apache Cassandra is a wide-column NoSQL database management system. It is designed to handle large amounts of data across many commodity servers while providing high availability with no single point of failure. It's commonly used for handling big data, IoT, and real-time analytics.

Question 17

According to your text, NoSQL stands for:
A) Numbered Structured Query Language.
B) No Structured Query Language.
C) Not Only Structured Query Language.
D) Numeric Only Structured Query Language.

Accepted Answer

NoSQL stands for "Not Only Structured Query Language," indicating that these databases can handle a variety of data models, not just the tabular relations used in traditional SQL databases.

Question 18

An organization that requires a graph database that is highly scalable would select the ________ database management system.
A) Access
B) Excel Spreadsheet
C) Neo4j
D) Redis

Accepted Answer

Neo4j is a graph database management system designed for highly scalable and high-performance applications. It is optimized for processing and querying complex, interconnected data sets and can easily handle large volumes of data, making it an ideal choice for organizations that require scalability. Access and Excel are not optimized for graph-based data structures, and Redis is a key-value store that is more suited for caching and session storage use cases.

Question 19

________ includes the value of speed in a NoSQL database.
A) Velocity
B) Vigilant
C) Verified
D) Variety

Accepted Answer

Velocity refers to the speed at which data can be processed and retrieved in a database. NoSQL databases are known for their ability to handle large amounts of data quickly due to their distributed architecture and lack of strict schemas. Therefore, velocity is an important aspect in NoSQL databases.

Question 20

________ includes NoSQL accommodation of various data types.
A) Velocity
B) Vigilant
C) Verified
D) Variety

Accepted Answer

The term "NoSQL" refers to non-relational databases that can handle unstructured or semi-structured data, and "variety" refers to the ability of NoSQL databases to accommodate various data types. Therefore, the correct answer is D.

Quiz 11: Big Data and Analytics

Big data requires effectively processing:

The three 'v's commonly associated with big data include:

________ is the most popular key-value store NoSQL database management system.

The NoSQL model that incorporates 'column families' is called a:

Big Data includes:

An organization that decides to adopt the most popular NoSQL database management system would select:

At a basic level, analytics refers to:

The NoSQL model that is specifically designed to maintain information regarding the relationships (often real-world instances of entities) between data items is called a:

NoSQL systems allow ________ by incorporating commodity servers that can be easily added to the architectural solution.

Big data:

________ generally processes the largest quantities of data.

The NoSQL model that includes a simple pair of a key and an associated collection of values is called a:

NoSQL focuses on:

NoSQL includes data storage and retrieval:

An organization that requires a sole focus on performance with the ability for keys to include strings, hashes, lists, and sorted sets would select ________ database management system.

Apache Cassandra is a leading producer of ________ NoSQL database management systems.

According to your text, NoSQL stands for:

An organization that requires a graph database that is highly scalable would select the ________ database management system.

________ includes the value of speed in a NoSQL database.

________ includes NoSQL accommodation of various data types.