GCSE Data Rep

What is created by the presence or absence of electricity in computer systems?

• Binary data

• Analog signals

• Mechanical energy

• Chemical reactions

What are the two states that a switch in a computer circuit can have?

• High or low

• Positive or negative

• On or off

• Open or closed

What allows for countless combinations in computer systems?

• The use of a single switch

• The flow of electricity through a single circuit

• The collective use of multiple switches

• The presence of electricity only

What does the number 1 represent in a binary system?

• Electricity is absent in the circuit

• Electricity is present in the circuit

• The switch is broken

• The switch is in a neutral state

What does the number 0 represent in a binary system?

• Electricity is present in the circuit

• The switch is in a neutral state

• Electricity is absent in the circuit

• The switch is broken

What is a single 1 or 0 in binary called?

• A byte

• A nibble

• A bit

• A binary number

How many bits are there in a byte?

• 4 bits

• 8 bits

• 16 bits

• 2 bits

What is the term used for a group of four bits?

• A byte

• A kilobyte

• A megabyte

• A nibble

How many bytes are there in one Kilobyte (KB)?

• 1,000

• 1,024

• 10,000

• 100

What is the conversion equivalent of one Megabyte (MB)?

• 1,000 bytes

• 1,000 KB

• 1,000 GB

• 1,000 TB