Error Detection Methods Quiz

What is the primary purpose of using a parity bit in data transmission?

• To increase data speed

• To encrypt data

• To compress data

• To detect errors in data

In a byte using odd parity, what should the parity bit be if the number of 1s is already odd?

• 2

• 1

• It doesn't matter

• 0

What is a limitation of using parity checks for error detection?

• They can only detect errors in ASCII data

• They are only used for encryption

• They cannot detect multiple errors in a byte

• They require complex algorithms

How do horizontal and vertical parity checks improve error detection?

• By compressing data

• By allowing error correction without resending data

• By encrypting data

• By increasing data speed

What is the role of a checksum in data transmission?

• To increase data speed

• To encrypt data

• To verify data integrity

• To compress data

How is a checksum value used at the receiving end?

• It is compared with a recalculated checksum

• It is used to compress the data

• It is used to encrypt the data

• It is ignored

What is a potential issue with echo checks?

• They create unnecessary network traffic

• They can only detect errors in ASCII data

• They require complex algorithms

• They are only used for encryption

In echo checks, what happens if the returned data differs from the original?

• The data is compressed

• The data is encrypted

• An error is assumed and data is resent

• The data is assumed correct

What is a common issue with both parity checks and echo checks?

• They cannot determine the exact location of an error

• They require complex hardware

• They are only used for encryption

• They cannot detect any errors

Which error detection method involves sending data back to the sender for verification?

• Vertical parity

• Echo checks

• Checksum

• Parity checks