Computer Science : S2 : L4 : Check Digits

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Last updated 4:39 AM on 2/6/24
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8 Terms

1
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Check Digits

An additional digit at the end of a set of numbers used to check for mistakes in input or transmission.

2
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Modulo 10

A calculation method used to generate and verify check digits by performing a series of calculations and comparing the result to the check digit.

3
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Automatic Repeat Requests (ARQ)

A method used to check data transmission integrity by using positive and negative acknowledgements and timeouts.

4
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Positive Acknowledgement

A message sent by the receiver to indicate that data has been received correctly.

5
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Negative Acknowledgement (NACK)

A message sent by the receiver to indicate that an error has been detected in the received data.

6
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Timeout

The time interval allowed to lapse before an acknowledgment is received.

7
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Block of Data

A chunk of information sent by the sender to the receiver.

8
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Resending

The process of sending the data block again if an acknowledgement or NACK is not received within a timeout period.