How does a data lake work?

Data is collected from multiple sources and stored in its original format

Extremely large, diverse data collections used for decision making

The degree to which big data can be trusted

What is the definition of Big Data Infrastructure?

Hardware/software that supports collection, storage, and processing of data

Big data is collected in the following ways EXCEPT:

Private data: medical and financial records without consumer permission

Infrastructure solutions used to support secure, fast, and high quality data transmissions include all EXCEPT:

In-house servers: using unencrypted wifi networks

All the following are benefits of big data EXCEPT:

Hiring experienced employees with advanced data tools and big data skills

How do individuals make use of big data?

Monitoring and improving their health by using fitness trackers

Collecting and analysing big data sets to discover patterns and trends

What’s the difference between a data warehouse (DW) and a data lake (DL)?

DL primarily stores raw data, whereas DW primarily stores structured data

What is cloud-based storage?

Users store, send, and retrieve files online and access web applications

Successfully using data can enhance the business decision making process

The best media that will allow for faster and more efficient transfer of data

The best option is a combination of all 3 methods of transmission

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IAL IT: Big Data

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Questions 16

Answers

1
How does a data lake work?
Only store structured data with predefined schemas
Data is collected from multiple sources and stored in its original format
Data must be cleaned and processed before entering the data lake
Data lakes automatically analyze and structure all stored data
2
What is Big Data?
Extremely large, diverse data collections that grow slowly over time
Extremely large, diverse data collections used for decision making
Characteristics include volume, velocity, variety, veracity and versatile
A special compressed file format for fast internet transfer
3
What is Veracity?
The speed at which big data is generated
The types of data: structured, semi-structured, unstructured
The degree to which big data can be trusted
The ways in which the data can be used and formatted
4
What is the definition of Big Data Infrastructure?
Hardware/software that supports collection, storage, and processing of data
A tool that automatically generates and analyzes big data
A basic database system designed for small-scale data storage
A network that only stores raw data without processing it
5
Other protocols that would replace or enhance TCP protocols include all EXCEPT:
quick UDP internet connections (QUIC)
Wifi Protected Access 2 (WPA2)
UDP-based data transfer protocol (UDT)
reliable multi-destination transport (RMDT)
6
Storage systems that sit on top of the cloud storage infrastructure and can be used with any cloud service include:
All of the above
Distributed files systems
Data warehouse and data lake
NoSQL databases
7
Big data is collected in the following ways EXCEPT:
Business transactions: e-commerce, customer databases, documents, emails
Surveillance systems: cameras, video footage from security systems
IoT devices: sensors, smart appliances, and wearable devices
Private data: medical and financial records without consumer permission
8
Which is not a cloud computing service?
Microsoft Azure
Hadoop
Google CP
Amazon Web Services
9
Infrastructure solutions used to support secure, fast, and high quality data transmissions include all EXCEPT:
High bandwidth networks: fibre optic cables and network connections
Data compression: compressing data before transmission
Distributed storage: distributing data across multiple storage nodes
In-house servers: using unencrypted wifi networks
10
All the following are benefits of big data EXCEPT:
Businesses can quickly make decisions using available and quality big data
Hiring experienced employees with advanced data tools and big data skills
Big data can provide information on how to operate more efficiently
Quickly address customer service issues and collect customer opinions
11
How do individuals make use of big data?
To eliminate all data collection from the internet
To improve government surveillance and tracking
To avoid digital marketing and online ads completely
Monitoring and improving their health by using fitness trackers
12
Data mining is:
Physically digging through archives and paper records to find information
A process of encrypting data to keep it secure from hackers
Collecting and analysing big data sets to discover patterns and trends
Randomly generating numbers and storing them for future use
13
What’s the difference between a data warehouse (DW) and a data lake (DL)?
DL primarily stores structured data, whereas DW primarily stores raw data
DL primarily stores data, whereas a DW primarily processes data
DL primarily stores old data, whereas DW primarily stores new data
DL primarily stores raw data, whereas DW primarily stores structured data
14
What is cloud-based storage?
None of the above
Uses multiple processors, each with its own operating system and memory
Organizations use network storage and in-house servers for data storage
Users store, send, and retrieve files online and access web applications
15
What is Value?
Successfully using data can enhance the business decision making process
Data that is generated from a variety of sources and needs to be stored
The quality, accuracy, integrity, and credibility of the data
Data is generated in a wide range of formats: structured, unstructured, raw
16
The best media that will allow for faster and more efficient transfer of data
Copper cable is less expensive, exists in rural areas
Wireless broadband have the lowest costs, but is weaker at longer distances
The best option is a combination of all 3 methods of transmission
Fibre optic is faster, can travel farther distances with less signal loss

IAL IT: Big Data Flashcards | StudBud