2. Data Transmission Part 2 - Computer Science CIE IGCSE

Errors never occur during data transmission

• True

• False

We need to check for errors after data transmission

• True

• False

Why can errors occur during data transmission?

• Interference

• Problems during packet switching

• Data skewing

• Data loss

• Broken wires

How many methods of error checking are there?

What are the methods of error checking?

• Parity check

• Checksum

• Record check

• Error check

What are the methods of error checking?

• Automatic repeat request

• Echo check

• Resend request

• Bit check

What is the most common method of error checking?

• Parity check

• Echo check

• Checksum

• ARQ

Parity is a...

• Bit-level error check

• Nibble-level error check

• Byte-level error check

How many types of parity check are there?

What are the two types of parity check?

• Error check

• Even parity

• Odd parity

• Checkdigit

• Parity bit