2.3.1 Data

Question 1

What are the ways of collecting data

Answer 1

• Autonomous devices
• Passive and active data collection
• Manual data collection
• Usage data

Question 2

What are the two ways of calculating the size of a file

Answer 2

1) File size = sample rate × sample resolution × length of sound

2) File size = bit rate × length of sound

Question 3

Define Data

Answer 3

Data can be defined as a set of recorded facts, numbers or events that has no initial meaning or structure.

Question 4

What are the different units of data

Answer 4

Byte B 8 bits

Kilobyte KB 1024bytes

Megabyte MB 1024 KB

Gigabyte GB 1024 MB

Terabyte TB 1024 GB

Petabyte PB 1024 TB

Exabyte EB 1024 PB

Zettabyte ZB 1024 EB

Yottabyte YB 1024 ZB

Question 5

What is virtualisation

Answer 5

Virtualisation: Is the process of turning hardware into a software equivalent without sacrificing functionality

Question 6

What are the types of cloud computing services

Answer 6

• Data storage
• E-mail
• Virtualised software
• Remotely hosted applications

Question 7

What is Clustering

Answer 7

A group of two or more computer systems that run in parallel together to achieve a goal.

Question 8

Define BlockChain

Answer 8

A way of saving data in a decentralised network, which utilises the unused hard disk space of users across the world to store files.

Question 9

What is Autonomous Data collection

Answer 9

Autonomous data is data that exists independently from any application. It is self-controlled, self-protected, and self-describing.​

Question 10

What is Active Data collection

Answer 10

Active data is data that we are actively collecting, usually by asking for it within our conversations or by extracting it​