NDA Exam > NDA Videos > General English For NDA > Error Detection And Correction
Error Detection And Correction Video Lecture | General English For NDA
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FAQs on Error Detection And Correction Video Lecture - General English For NDA
| 1. What is error detection and correction? |  |
Ans. Error detection and correction is a process used in communication and data storage systems to identify and correct errors that occur during the transmission or storage of data. It involves the use of various techniques and algorithms to detect and correct errors, ensuring the integrity and accuracy of the transmitted or stored data.
| 2. How does error detection and correction work? | |
Ans. Error detection and correction techniques work by adding additional bits to the data being transmitted or stored. These additional bits, known as parity bits or checksums, are used to detect errors. If an error is detected, the receiver can request the retransmission of the data or use error correction algorithms to correct the errors automatically.
| 3. What are the common error detection and correction techniques? | |
Ans. Some common error detection and correction techniques include parity check, checksum, cyclic redundancy check (CRC), and forward error correction (FEC). Parity check involves adding a single parity bit to the data to detect errors. Checksum calculates a sum of all the data bits and appends it to the data. CRC uses polynomial division to generate a checksum, and FEC uses error-correcting codes to encode and decode the data.
| 4. Why is error detection and correction important? | |
Ans. Error detection and correction are crucial in ensuring the accuracy and reliability of data transmission or storage. Errors can occur due to noise, interference, or other factors, and without error detection and correction, these errors can lead to data corruption or loss. By implementing error detection and correction techniques, the integrity of the data can be maintained, and any errors can be automatically corrected or flagged for retransmission.
| 5. What are the applications of error detection and correction? | |
Ans. Error detection and correction techniques find applications in various fields, including telecommunications, computer networks, data storage systems, and satellite communication. They are used in protocols such as TCP/IP, Ethernet, and Wi-Fi to ensure reliable data transfer. Error correction codes are also used in storage devices like hard drives and flash drives to protect against data corruption.
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Nov 22, 2024 Last updated |
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