Data Transmission Errors

What are error detection methods used in data transmission?

• parity check, checksum, CRC, error-correcting codes

• stop-and-wait ARQ

• hamming code

• bit stuffing

What is parity checking and how does it help in error detection?

• Parity checking is a method used for error correction in data transmission.

• Parity checking is a method used for data encryption in data transmission.

• Parity checking is a method used for data compression in data transmission.

• Parity checking is a method used for error detection in data transmission.

Explain the concept of checksums in data transmission.

• Checksums are used to ensure the integrity of transmitted data.

• Checksums are used to authenticate transmitted data.

• Checksums are used to compress transmitted data.

• Checksums are used to encrypt transmitted data.

How is a check digit used to detect errors in data transmission?

• A check digit is used to encrypt the data during transmission.

• A check digit is used to compare the calculated check digit with the received check digit to detect errors in data transmission.

• A check digit is used to compress the data for faster transmission.

• A check digit is used to verify the sender's identity during transmission.

What is automatic repeat query and how does it help in error recovery?

• Automatic repeat query is a technique used in computer networks to recover from errors in data transmission.

• Automatic repeat query is a feature in programming languages that allows for automatic error handling.

• Automatic repeat query is a method used in database management systems to recover from errors in data retrieval.

• Automatic repeat query is a technique used in computer graphics to recover from errors in rendering.

Which error detection method is more reliable: parity checking or checksums?

• checksums

• hamming code

• cyclic redundancy check

• parity checking

What is the purpose of error detection methods in data transmission?

• To encrypt the data being transmitted.

• To increase data transmission speed.

• To ensure data integrity and accuracy.

• To compress the data for efficient transmission.

Give an example of how a check digit is used in real-life scenarios.

• Credit card numbers, ISBNs, and barcodes

• Phone numbers, Social Security numbers, and driver's license numbers.

• Serial numbers, product codes, and employee IDs.

• Email addresses, passport numbers, and VIN numbers.

Explain the process of error recovery using automatic repeat query.

• The process of error recovery using automatic repeat query involves requesting the sender to retransmit the entire data.

• The process of error recovery using automatic repeat query involves discarding lost or corrupted data packets.

• The process of error recovery using automatic repeat query involves retransmitting lost or corrupted data packets until they are successfully received by the receiver.

• The process of error recovery using automatic repeat query involves reducing the transmission speed to minimize errors.

What are the advantages of using error detection methods in data transmission?

• Error detection methods ensure accuracy and integrity of transmitted data.

• Error detection methods improve the security of transmitted data.

• Error detection methods reduce the cost of data transmission.

• Error detection methods increase the transmission speed of data.