Which term is defined by the description 'count to spot errors'?

Which term is defined by the description 'count to spot errors'?

• A. Error detection
• B. Parity check
• C. Check digit
• D. Echo check

Answer: (A)

Counting to spot errors is about detecting mistakes in data by using a check that depends on a counted property. When data is sent or stored, extra information is added so the recipient can verify it arrived intact. This verification often involves counting something—like the number of 1s in a binary string for a parity check, or computing a digit based on the data for a check digit. If the count or calculated value doesn’t match what’s expected, an error is detected. That makes error detection the broad term that fits the description. A parity check is a specific method that uses counting of bits to enforce even or odd parity. A check digit also uses a counting-based calculation to validate data. An echo check isn’t based on counting at all; it simply mirrors the data and checks for a match. So the description best aligns with error detection.

Counting to spot errors is about detecting mistakes in data by using a check that depends on a counted property. When data is sent or stored, extra information is added so the recipient can verify it arrived intact. This verification often involves counting something—like the number of 1s in a binary string for a parity check, or computing a digit based on the data for a check digit. If the count or calculated value doesn’t match what’s expected, an error is detected. That makes error detection the broad term that fits the description. A parity check is a specific method that uses counting of bits to enforce even or odd parity. A check digit also uses a counting-based calculation to validate data. An echo check isn’t based on counting at all; it simply mirrors the data and checks for a match. So the description best aligns with error detection.