G9 Data Transmission & Error Detection Methods

What does a parity check determine?

• The speed of data transmission

• Whether bits in a transmission have been corrupted

• The type of data being sent

• The size of the data packet

What is the purpose of a checksum?

• To determine if data has been corrupted or altered

• To compress data for storage

• To increase the speed of data transmission

• To encrypt data during transmission

In an even parity check, how many 1's must be present in the byte including the parity bit?

• An odd number

• Exactly one

• An even number

• Zero

What is an echo check?

• A technique to compress data

• A method to check data integrity by sending data back to the sender

• A method to increase data transmission speed

• A way to encrypt data

What happens if the calculated checksum does not match the transmitted checksum?

• It indicates that an error has occurred

• It indicates that the data is correct

• It means the data is being transmitted faster

• It means the data is encrypted

What is a limitation of using parity checks?

• They require complex calculations

• They can only detect single-bit errors

• They are very slow

• They fail to detect bit swaps that keep parity the same

What does a parity byte do?

• It stores the original data

• It contains the parity bits from the vertical parity calculation

• It compresses the data

• It encrypts the data

How is the parity bit determined in an odd parity check?

• By ensuring the total number of 1's is odd

• By checking the data size

• By ensuring the total number of 1's is even

• By counting the number of 0's

What is the main function of error detection methods?

• To increase data transmission speed

• To ensure data is encrypted

• To identify if errors have occurred during data transmission

• To compress data for storage

What can cause an error during data transmission?

• Increasing the data size

• Using a different encoding method

• Interference on a wire or wirelessly

• Using a faster transmission method