Answer:
Classification.
Explanation:
Classification is the wide field of data mining apps that analyzes data and establishes rules for making a distinction in specified classes.
Data mining is a method that corporations use to transform the raw information into valuable information. Corporations can understand something about their clients through using technology to identify trends in large quantities of info to create more successful marketing campaigns, increase revenue and reduce costs.
Answer:
Array: (a) All the messages a user has sent.
Variable: (b) The highest score a use has reached on the app. (c) A username and password to unlock the app.
Explanation:
An array generally has more than one value whereas a variable can only contain a single value at any particular point in time. In addition, a variable has a limit whereas an array does not have any maximum limit. Therefore, it can be concluded that option (a) will be stored as an array while options (b) and (c) will be stored as variables.
These are called abstractions. They can be created by functions, if statements, or on event structures.
I use host -a
dig and nslookup could do it, I forget the switches and arguments.