Section 3: Main(internal) memory and backing storage

Question 1

Main Memory

Answer 1

RAM 
Store data temporarily 
Volatile
Can be read very quickly
Processed by the CPU

Question 2

Backing Storage

Answer 2

The name for all other data storage devices in a computer: hard-drive, etc.
Non-volatile, so it is generally used to store data for a long time.
Slower to access