a2 1-1-units-and-numbers-GCSE QUIZ

What is a bit? Select three statements that are true.

• It is the smallest unit of data inside a computer.
• It is either a 1 or a 0.
• It is a collection of 1’s and 0’s.
• It is represented by a switch being open or closed.
• It is a collection of bytes.

What is a byte?

• It is a 1 or a 0.
• It is 4 bits.
• It is 8 bits.
• It is 16 bits.

How many nibbles are there in a byte?

• 1
• 2
• 4
• 8

How many bytes are there in a Kilobyte?

• 100
• 1000
• 100,000
• 1,000,000

How many Kilobytes are there in a Gigabyte?

• 10
• 1000
• 100,000
• 1,000,000

What is a Terabyte? Select three statements that are true.

• A thousand Gigabytes.
• A million Gigabytes.
• A million Megabytes
• A billion Megabytes.
• A billion Kilobytes.

How many Megabytes are there in 56 Gigabytes?

• 5,600
• 56,000
• 560,000
• 5,600,000

How many Megabytes are there in 840 Kilobytes?

• 0.084
• 0.84
• 8.4
• 84

Why does all data have to be represented in binary in the computer? Select two statements that are true.

• It is very fast.
• It is very simple.
• The computer components are made up of switches which can only store 1 or 0.
• It is easy to program as there only is a 1 or a 0
• Wires transfer data as electricity where one voltage is a 1 and another is a 0.