AS Check Digits and Parity Bits

What are check digits and parity bits used for?

• Detecting errors in data transmission
• Adding numbers together
• Calculating binary values
• Encoding data packets

How are check digits calculated?

• By adding numbers to another number
• By counting the number of ones in a binary string
• By calculating the sum of all digits
• By multiplying two numbers together

What happens if there is a change in the number?

• The check digit remains the same
• The check digit is recalculated
• The number becomes invalid
• The number is ignored

What is the purpose of a parity bit?

• To detect errors in data transmission
• To add an extra digit to the binary string
• To calculate the sum of all digits
• To encode data packets

How is an even parity bit calculated?

• By counting the number of ones in a binary string
• By adding numbers to another number
• By multiplying two numbers together
• By subtracting one number from another

What happens if there is an error in the parity bit?

• The data is correct
• The data is ignored
• The data is resent
• The data becomes invalid

Which of the following is an example of an odd parity bit?

• 10101010
• 01010101
• 11110000
• 00001111

What is the main purpose of check digits and parity bits?

• To ensure data accuracy
• To encrypt data
• To compress data
• To transmit data faster

How do check digits and parity bits help with error detection?

• By comparing calculated values
• By counting the number of zeros
• By multiplying two numbers together
• By encrypting the data

What is the consequence of an error in the parity bit?

• The data is incorrect
• The data is ignored
• The data is compressed
• The data is encrypted