What term describes the repetition of information to reduce errors in transmission?

What term describes the repetition of information to reduce errors in transmission?

• A. Error correction
• B. Redundancy
• C. Compression
• D. Encryption

Answer: (B)

Redundancy describes repeating information to help catch and fix errors in transmission. By adding extra bits or duplicating data, the receiver can detect when something has changed and often recover the original message even if some parts are distorted by noise. This is why redundancy is used in imperfect communication channels—for example, parity bits or repeated symbols give the system a way to verify and correct data. Error correction is the process that uses this extra information to fix errors, compression removes redundancy to save bandwidth, and encryption disguises the content. So redundancy is the term that best fits the idea of repetition to reduce errors.

Redundancy describes repeating information to help catch and fix errors in transmission. By adding extra bits or duplicating data, the receiver can detect when something has changed and often recover the original message even if some parts are distorted by noise. This is why redundancy is used in imperfect communication channels—for example, parity bits or repeated symbols give the system a way to verify and correct data. Error correction is the process that uses this extra information to fix errors, compression removes redundancy to save bandwidth, and encryption disguises the content. So redundancy is the term that best fits the idea of repetition to reduce errors.