Computer Science · Oct / Nov 2016 · Paper 1 HL · Question 8
Adapt for 2027A2.1.4 protocols, A2.4.2-A2.4.3 risks and countermeasures (HL); system flowchart and peripherals not in 2027.
IBCS
As printed in the paper
The question as text
8. A book shop has a computer at each point of sale, and also a central computer. When a customer buys a book in the book shop, the salesperson at the point of sale uses a scanning device to input a barcode from the book. The barcode is sent to the central computer where the barcode of each book and the corresponding price are held in a database on a disk. When the price is found, it is sent to the point of sale computer where all necessary calculations are performed, details of the transaction are stored on a local disk and a receipt is printed out.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
8(a)[5]
8(b)[2]
8(c)[2]
8(d)(i)[2]
8(d)(ii)[2]
8(d)(iii)[2]
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