The airport baggage system is to use several computers. Fig. 1 shows a check-in computer, a central server and a baggage conveyor controller linked by a net...
Question 1 Report
The airport baggage system is to use several computers. Fig. 1 shows a check-in computer, a central server and a baggage conveyor controller linked by a network. The server holds flight and bag data, while the controller operates the motors.
(a) State the computer that is likely to store the shared baggage data. [1]
(b) Give two reasons for using a server rather than storing all data only on each check-in computer. [2]
(c) Give two hardware devices needed by the conveyor controller to detect and move bags. [2]
(d) Give three checks that software could make before sending a bag to a flight. [3]
Answer Details
(a) The central server is likely to store the shared baggage data. [1]
(b) A server provides one shared central copy, so all check-in computers can access updates. It also makes backup and security management easier and avoids inconsistent local copies. [2]
(c) A barcode or RFID reader is needed to identify bags, and a motor is needed to move the conveyor. A sensor, conveyor belt or actuator/diverter would also be valid. [2]
(d) Before sending a bag, software can check that a bag record exists, that the flight number is valid, and that the destination matches the flight. It could also check that the flight is departing, the bag was checked in, and it has not already been loaded. [3]
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