Data Transmission and Error Detection Quiz

What is the purpose of parity checking?

• To increase data transmission speed

• To check if data has been changed or corrupted

• To compress data before transmission

• To encrypt data during transmission

In even parity, what should the parity bit be if there are four 1-bits in the byte?

• 0

• 1

• It can be either

• It should not be set

What happens if a byte is received with an odd number of 1-bits when even parity is used?

• No error is detected

• An error is flagged

• The transmission is considered successful

• The data is automatically corrected

What is a checksum?

• A type of encryption

• A value sent to check data integrity

• A method to increase transmission speed

• A method to compress data

What does an echo check involve?

• Sending data back to the sender for comparison

• Calculating a checksum

• Transmitting data in blocks

• Using multiple parity bits

If two bits change during transmission, what is the result?

• The data is automatically corrected

• The error cannot be located using parity checking

• The parity check will still indicate an error

• The error can be easily identified

What is the role of the parity byte in a parity block?

• To indicate the end of the data block

• To store the original data

• To calculate the checksum

• To provide encryption

How is the parity bit determined in odd parity?

• It is always set to 0

• It is set to ensure an odd number of 1-bits

• It is calculated based on the checksum

• It is not used in odd parity

What is the first step in the checksum process?

• Calculating the checksum

• Receiving the data block

• Comparing checksums

• Sending the data block

What does a change in parity indicate during data transmission?

• An error has occurred

• The data has been compressed

• The data is encrypted

• The data is correct