(a) Computers can transmit data using different methods. Describe the three data transmission methods given. (i) Serial data transmission \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ [2] (ii) Parallel data transmission \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ [2] (iii) Duplex data transmission \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ [2] (b) Data can sometimes be corrupted when it is transmitted from one computer to another, causing errors to be present in the data. Identify and describe three methods of error detection that could be used to see if an error has occurred. Error detection method 1 \_\_\_\_ Description \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ Error detection method 2 \_\_\_\_ Description \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ Error detection method 3 \_\_\_\_ Description \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_

2018 - O/N - 0478/12 | Q9

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(a) Computers can transmit data using different methods. ...