How much do you know about computers?

How much do you know about computers?

1 What are the rectangle shaped things that you can plug in cameras, printers, ect.?
2 (for PC's) What is the storage device named C:/ usually?
3 What is the blue chord that connects most monitors to computers?
4 What is the long term memory, or the memory that can be opened anytime?
5 what is the main processing device?